Multicrystalline materials play a crucial role in our society. However, their microstructure is complicated, and there is no universal approach to achieving high performance. Therefore, a methodology is necessary to answer the fundamental question of how we should design and create microstructures. ‘Multicrystalline informatics’ is an innovative approach that combines experimental, theoretical, computational, and data sciences. This approach helps us understand complex phenomena in multicrystalline materials and improve their performance. The paper covers various original research bases of multicrystalline informatics, such as the three-dimensional visualization of crystal defects in multicrystalline materials, the machine learning model for predicting crystal orientation distribution, network analysis of multicrystalline structures, computational methods using artificial neural network interatomic potentials, and so on. The integration of these research bases proves to be useful in understanding unexplained phenomena in complex multicrystalline materials. The paper also presents examples of efficient optimization of the growth process of high-quality materials with the aid of informatics, as well as prospects for extending the methodology to other materials.
{"title":"Multicrystalline informatics: a methodology to advance materials science by unraveling complex phenomena","authors":"Noritaka Usami, Kentaro Kutsukake, Takuto Kojima, Hiroaki Kudo, Tatsuya Yokoi, Yutaka Ohno","doi":"10.1080/14686996.2024.2396272","DOIUrl":"https://doi.org/10.1080/14686996.2024.2396272","url":null,"abstract":"Multicrystalline materials play a crucial role in our society. However, their microstructure is complicated, and there is no universal approach to achieving high performance. Therefore, a methodology is necessary to answer the fundamental question of how we should design and create microstructures. ‘Multicrystalline informatics’ is an innovative approach that combines experimental, theoretical, computational, and data sciences. This approach helps us understand complex phenomena in multicrystalline materials and improve their performance. The paper covers various original research bases of multicrystalline informatics, such as the three-dimensional visualization of crystal defects in multicrystalline materials, the machine learning model for predicting crystal orientation distribution, network analysis of multicrystalline structures, computational methods using artificial neural network interatomic potentials, and so on. The integration of these research bases proves to be useful in understanding unexplained phenomena in complex multicrystalline materials. The paper also presents examples of efficient optimization of the growth process of high-quality materials with the aid of informatics, as well as prospects for extending the methodology to other materials.","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-31DOI: 10.1080/14686996.2024.2402685
Ling Gao, Haonan Liu, Xiaobin Liang, Makiko Ito, Ken Nakajima
Styrene-based ABA-type triblock copolymers and their blends are widely investigated thermoplastic elastomers (TPEs). The design of tough TPE materials with high strength and resilience requires further clarification of the relationship between microstructure and macroscopic properties of stretched samples. Here, we applied atomic force microscopy (AFM)-based quantitative nanomechanical mapping to study the deformation behavior of poly(styrene-b-isoprene-b-styrene) blends under tension. The results indicated that the glassy polystyrene (PS) domains deformed and inhomogeneous stress distributions developed in the initial stretching stage. At 200% strain, the glassy PS domains started to crack. The change in the peak value in the JKR Young’s modulus diagram during stretching was consistent with the stress – strain curve. Analysis of the particles before and after stretching suggested that the glassy domains separated and reorganized during stretching.
{"title":"Tracking the evolution of the morphology and stress distribution of SIS thermoplastic elastomers under tension using atomic force microscopy","authors":"Ling Gao, Haonan Liu, Xiaobin Liang, Makiko Ito, Ken Nakajima","doi":"10.1080/14686996.2024.2402685","DOIUrl":"https://doi.org/10.1080/14686996.2024.2402685","url":null,"abstract":"Styrene-based ABA-type triblock copolymers and their blends are widely investigated thermoplastic elastomers (TPEs). The design of tough TPE materials with high strength and resilience requires further clarification of the relationship between microstructure and macroscopic properties of stretched samples. Here, we applied atomic force microscopy (AFM)-based quantitative nanomechanical mapping to study the deformation behavior of poly(styrene-<i>b</i>-isoprene-<i>b</i>-styrene) blends under tension. The results indicated that the glassy polystyrene (PS) domains deformed and inhomogeneous stress distributions developed in the initial stretching stage. At 200% strain, the glassy PS domains started to crack. The change in the peak value in the JKR Young’s modulus diagram during stretching was consistent with the stress – strain curve. Analysis of the particles before and after stretching suggested that the glassy domains separated and reorganized during stretching.","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-31DOI: 10.1080/14686996.2024.2396276
Mehdi Estili, Rong-Jun Xie, Kohsei Takahashi, Shiro Funahashi, Tohru S. Suzuki, Naoto Hirosaki
Nitrides and oxynitrides isostructural to α-Si3N4 (M-α-SiAlON, M = Sr, Ca, Li) possess superb thermally stable photoluminescence (PL) properties, making them reliable phosphors for high-power solid-state lighting. However, the synthesis of phase-pure Sr-α-SiAlON still remains a great challenge and has only been reported for Sr below 1.35 at.% as the large size of Sr2+ ions tends to destabilize the α-SiAlON structure. Here, we succeeded to synthesize the single-phase powders of a unique ‘Sr-rich’ polytypoid α-SiAlON (Sr3Si24Al6N40:Eu2+) phosphor with three distinctive Sr/Eu luminescence sites using a solid-state remixing-reannealing process. The Sr content of this polytypoid structure exceeds those of a few previously reported structures by over 200%. The phase purity, composition, structure, and PL properties of this phosphor were investigated. A single phase can be obtained by firing the stoichiometric mixtures of all-nitride precursors at 2050°C under a 0.92 MPa N2 atmosphere. The Sr3Si24Al6N40:Eu2+ shows an intense orange-yellow emission, with the emission maximum of 590 nm and internal/external quantum efficiency of 66%/52% under 400 nm excitation. It also has a quite small thermal quenching, maintaining 93% emission intensity at 150°C. In comparison to Ca-α-SiAlON:Eu2+, this Sr counterpart shows superior quantum efficiency and thermal stability, enabling it to be an interesting orange-yellow down-conversion luminescent material for white LEDs. The experimental confirmation of the existence of such ‘Sr-rich’ SiAlON systems, in a single-phase powder form, paves the way for the design and synthesis of novel ‘Sr-rich’ SiAlON-based phosphor powders with unparalleled properties.
{"title":"Robust and orange-yellow-emitting Sr-rich polytypoid α-SiAlON (Sr3Si24Al6N40:Eu2+) phosphor for white LEDs","authors":"Mehdi Estili, Rong-Jun Xie, Kohsei Takahashi, Shiro Funahashi, Tohru S. Suzuki, Naoto Hirosaki","doi":"10.1080/14686996.2024.2396276","DOIUrl":"https://doi.org/10.1080/14686996.2024.2396276","url":null,"abstract":"Nitrides and oxynitrides isostructural to α-Si<sub>3</sub>N<sub>4</sub> (<i>M</i>-α-SiAlON, <i>M</i> = Sr, Ca, Li) possess superb thermally stable photoluminescence (PL) properties, making them reliable phosphors for high-power solid-state lighting. However, the synthesis of phase-pure Sr-α-SiAlON still remains a great challenge and has only been reported for Sr below 1.35 at.% as the large size of Sr<sup>2+</sup> ions tends to destabilize the α-SiAlON structure. Here, we succeeded to synthesize the single-phase powders of a unique ‘Sr-rich’ polytypoid α-SiAlON (Sr<sub>3</sub>Si<sub>24</sub>Al<sub>6</sub>N<sub>40</sub>:Eu<sup>2+</sup>) phosphor with three distinctive Sr/Eu luminescence sites using a solid-state remixing-reannealing process. The Sr content of this polytypoid structure exceeds those of a few previously reported structures by over 200%. The phase purity, composition, structure, and PL properties of this phosphor were investigated. A single phase can be obtained by firing the stoichiometric mixtures of all-nitride precursors at 2050°C under a 0.92 MPa N<sub>2</sub> atmosphere. The Sr<sub>3</sub>Si<sub>24</sub>Al<sub>6</sub>N<sub>40</sub>:Eu<sup>2+</sup> shows an intense orange-yellow emission, with the emission maximum of 590 nm and internal/external quantum efficiency of 66%/52% under 400 nm excitation. It also has a quite small thermal quenching, maintaining 93% emission intensity at 150°C. In comparison to Ca-α-SiAlON:Eu<sup>2+</sup>, this Sr counterpart shows superior quantum efficiency and thermal stability, enabling it to be an interesting orange-yellow down-conversion luminescent material for white LEDs. The experimental confirmation of the existence of such ‘Sr-rich’ SiAlON systems, in a single-phase powder form, paves the way for the design and synthesis of novel ‘Sr-rich’ SiAlON-based phosphor powders with unparalleled properties.","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-31DOI: 10.1080/14686996.2024.2403328
Yibin Xu, Yen-Ju Wu, Huiping Li, Lei Fang, Shigenobu Hayashi, Ayako Oishi, Natsuko Shimizu, Riccarda Caputo, Pierre Villars
Data-driven material research for property prediction and material design using machine learning methods requires a large quantity, wide variety, and high-quality materials data. For battery materials, which are commonly polycrystalline, ceramics, and composites, multiscale data on substances, materials, and batteries are required. In this work, we develop a data network composed of three interlinked databases, from which we can obtain comprehensive data on substances such as crystal structures and electronic structures, data on materials such as chemical composition, structure, and properties, and data on batteries such as battery composition, operation conditions, and capacity. The data are extracted from research papers on solid electrolytes and cathode materials, selected by screening more than 330 thousand papers using natural language processing tools. Data extraction and curation are carried out by editors specialized in material science and trained in data standardization.
{"title":"A comprehensive data network for data-driven study of battery materials","authors":"Yibin Xu, Yen-Ju Wu, Huiping Li, Lei Fang, Shigenobu Hayashi, Ayako Oishi, Natsuko Shimizu, Riccarda Caputo, Pierre Villars","doi":"10.1080/14686996.2024.2403328","DOIUrl":"https://doi.org/10.1080/14686996.2024.2403328","url":null,"abstract":"Data-driven material research for property prediction and material design using machine learning methods requires a large quantity, wide variety, and high-quality materials data. For battery materials, which are commonly polycrystalline, ceramics, and composites, multiscale data on substances, materials, and batteries are required. In this work, we develop a data network composed of three interlinked databases, from which we can obtain comprehensive data on substances such as crystal structures and electronic structures, data on materials such as chemical composition, structure, and properties, and data on batteries such as battery composition, operation conditions, and capacity. The data are extracted from research papers on solid electrolytes and cathode materials, selected by screening more than 330 thousand papers using natural language processing tools. Data extraction and curation are carried out by editors specialized in material science and trained in data standardization.","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1080/21663831.2024.2399880
Bo Yang, Fuxing Yin, Baoxi Liu, Liying Sun, Tianlong Liu, Hui Yu, Andrey Belyakov, Zhichao Luo
Heterostructured ferritic steels with bimodal-grained lamellar (BG-L) and ultrafine-grained lamellar (UFG-L) microstructure were prepared through a warm deformation process. The BG-L steel exhibits enhanced mechanical properties compared to conventional quenched and tempered (QT) steel. While the UFG-L steel demonstrates an outstanding combination of strength, ductility, and toughness. Furthermore, the UFG-L steels exhibit no ductile-to-brittle transition (DBT) from room temperature (RT) to liquid nitrogen temperature (LNT) and the Charpy impact energy remains as high as 314 J at LNT. The enhanced toughness at LNT can be attributed to the crack-arrester mechanism caused by grain-boundary delamination.
{"title":"Eliminate the contradiction between temperature and toughness by grain-boundary delamination in heterogeneous ultrafine-grained lamellar steels","authors":"Bo Yang, Fuxing Yin, Baoxi Liu, Liying Sun, Tianlong Liu, Hui Yu, Andrey Belyakov, Zhichao Luo","doi":"10.1080/21663831.2024.2399880","DOIUrl":"https://doi.org/10.1080/21663831.2024.2399880","url":null,"abstract":"Heterostructured ferritic steels with bimodal-grained lamellar (BG-L) and ultrafine-grained lamellar (UFG-L) microstructure were prepared through a warm deformation process. The BG-L steel exhibits enhanced mechanical properties compared to conventional quenched and tempered (QT) steel. While the UFG-L steel demonstrates an outstanding combination of strength, ductility, and toughness. Furthermore, the UFG-L steels exhibit no ductile-to-brittle transition (DBT) from room temperature (RT) to liquid nitrogen temperature (LNT) and the Charpy impact energy remains as high as 314 J at LNT. The enhanced toughness at LNT can be attributed to the crack-arrester mechanism caused by grain-boundary delamination.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Understanding the deformation mechanism in polycrystalline metals is critical to use them in high-value high-risk applications. Here, we report an automated framework based on lattice rotation analysis for accurately identifying slip system and assessing the multiple slip activities in large data set of polycrystalline Zr, aims to statistically provide deep insight on deformation mechanism of Zr. Results show that multiple slip is the dominant slip system rather than single slip system. This method can be applied as a complementary method to the intragranular misorientation axis (IGMA) method and can act as bridges between macro-mechanical response and microstructural deformation mechanisms.
{"title":"The activation of multiple slip systems in polycrystalline zirconium by using automated lattice rotation framework","authors":"Huigang Shi, Jianye Chen, Junqiang Lu, Libing Zhu, Lefu Zhang, Jiuxiao Li, Weijie Lu, Xianglong Guo","doi":"10.1080/21663831.2024.2402370","DOIUrl":"https://doi.org/10.1080/21663831.2024.2402370","url":null,"abstract":"Understanding the deformation mechanism in polycrystalline metals is critical to use them in high-value high-risk applications. Here, we report an automated framework based on lattice rotation analysis for accurately identifying slip system and assessing the multiple slip activities in large data set of polycrystalline Zr, aims to statistically provide deep insight on deformation mechanism of Zr. Results show that multiple slip is the dominant slip system rather than single slip system. This method can be applied as a complementary method to the intragranular misorientation axis (IGMA) method and can act as bridges between macro-mechanical response and microstructural deformation mechanisms.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1080/21663831.2024.2405085
Maobao Xu, Haibin Wang, Xuemei Liu, Hao Lu, Xiaoyan Song
In this study, toughening of WC-Co composite prepared by amorphous-crystallization method was investigated. Co-rich nanoparticles, a Co(W,C) solid solution, were incorporated into the WC matrix through the process integrating crystallization of amorphous Co2W4C powder and its in-situ reaction with carbon. The microstructural evolution of the ceramic-metal composite during fabrication was studied in detail. Owing to the interactions between Co-rich nanoparticles coherent with the WC matrix and the dislocations and stacking faults inside WC grains, the composite exhibited high hardness and strength combined with exceptional fracture toughness. The mechanisms for the synergistic improvement of mechanical properties of the composite were disclosed.
本研究探讨了非晶-结晶法制备的 WC-Co 复合材料的增韧问题。通过非晶 Co2W4C 粉末的结晶及其与碳的原位反应，富 Co 纳米颗粒（一种 Co（W，C）固溶体）被加入到 WC 基体中。我们详细研究了陶瓷-金属复合材料在制造过程中的微观结构演变。由于富钴纳米粒子与碳化钨基体之间的相互作用，以及碳化钨晶粒内部的位错和堆积断层，复合材料表现出了高硬度、高强度和优异的断裂韧性。研究揭示了该复合材料机械性能协同改善的机制。
{"title":"Microstructural evolution and toughening mechanism of WC-Co composite prepared by amorphous-crystallization method","authors":"Maobao Xu, Haibin Wang, Xuemei Liu, Hao Lu, Xiaoyan Song","doi":"10.1080/21663831.2024.2405085","DOIUrl":"https://doi.org/10.1080/21663831.2024.2405085","url":null,"abstract":"In this study, toughening of WC-Co composite prepared by amorphous-crystallization method was investigated. Co-rich nanoparticles, a Co(W,C) solid solution, were incorporated into the WC matrix through the process integrating crystallization of amorphous Co<sub>2</sub>W<sub>4</sub>C powder and its in-situ reaction with carbon. The microstructural evolution of the ceramic-metal composite during fabrication was studied in detail. Owing to the interactions between Co-rich nanoparticles coherent with the WC matrix and the dislocations and stacking faults inside WC grains, the composite exhibited high hardness and strength combined with exceptional fracture toughness. The mechanisms for the synergistic improvement of mechanical properties of the composite were disclosed.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-23DOI: 10.1016/j.jallcom.2024.177190
Hao Li, Huangbai Liu, Lei Li, Fei Liu, Kuan-Chang Chang, Shaojun Liu
Lattice defects play a crucial role in determining the microwave dielectric properties of ceramics. We herein report a simple way to significantly improve the dielectric properties of MgTiO3 based microwave ceramics by restoring the oxygen vacancy via supercritical assisted oxidation (SAO) technology. The high penetrability of SCCO2 fluid makes the OH− groups easy to approach oxygen vacancy, which react with the dangling bonds to form A-O-A (A=Ti/Mg) covalent coordinate bonds. The oxygen vacancy concentration in MgTiO3-CaTiO3 ceramics significantly decreases from 26.7 % to 18.5 % and the Ti-O bond strength is strengthened after SAO treatment. Furthermore, the activation energy Ea increases to 0.60 eV from 0.52 eV, indicating a lower defects density as well. Consequently, MgTiO3-CaTiO3 ceramics treated by SAO exhibit better high-temperature stability in dielectric properties and the Q×f values of MgTiO3-CaTiO3 ceramics increase by 11.3∼19.0 % due to the decreased defects concentration, thereby demonstrating the potential of supercritical fluid technology in achieving performance optimization of microwave dielectric ceramics.
{"title":"Significantly reduced lattice defects and improved dielectric properties of MgTiO3 based microwave ceramics via supercritical-fluid assisted oxidation technology","authors":"Hao Li, Huangbai Liu, Lei Li, Fei Liu, Kuan-Chang Chang, Shaojun Liu","doi":"10.1016/j.jallcom.2024.177190","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177190","url":null,"abstract":"Lattice defects play a crucial role in determining the microwave dielectric properties of ceramics. We herein report a simple way to significantly improve the dielectric properties of MgTiO<sub>3</sub> based microwave ceramics by restoring the oxygen vacancy via supercritical assisted oxidation (SAO) technology. The high penetrability of SCCO<sub>2</sub> fluid makes the OH<sup>−</sup> groups easy to approach oxygen vacancy, which react with the dangling bonds to form A-O-A (A=Ti/Mg) covalent coordinate bonds. The oxygen vacancy concentration in MgTiO<sub>3</sub>-CaTiO<sub>3</sub> ceramics significantly decreases from 26.7 % to 18.5 % and the Ti-O bond strength is strengthened after SAO treatment. Furthermore, the activation energy <em>E</em><sub><em>a</em></sub> increases to 0.60 eV from 0.52 eV, indicating a lower defects density as well. Consequently, MgTiO<sub>3</sub>-CaTiO<sub>3</sub> ceramics treated by SAO exhibit better high-temperature stability in dielectric properties and the <em>Q×f</em> values of MgTiO<sub>3</sub>-CaTiO<sub>3</sub> ceramics increase by 11.3∼19.0 % due to the decreased defects concentration, thereby demonstrating the potential of supercritical fluid technology in achieving performance optimization of microwave dielectric ceramics.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":null,"pages":null},"PeriodicalIF":6.2,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-23DOI: 10.1016/j.jma.2024.10.001
Jia She, Jing Chen, Xiaoming Xiong, Yan Yang, Xiaodong Peng, Daolun Chen, Fusheng Pan
Magnesium materials have attracted the attention of many researchers, and the related research is expanding. This article summarizes the advance in the research and development of magnesium materials globally in 2023 from bibliometric and scientific perspectives. More than 4680 articles on Mg and its alloys were published and indexed in the Web of Science (WoS) Core Collection database last year. The bibliometric analyses show that the traditional structural Mg alloys, functional Mg materials, and corrosion and protection of Mg alloys are still the main research focus. Therefore, this review paper mainly focuses on the research progress of Mg cast alloys, Mg wrought alloys, bio-magnesium alloys, Mg-based energy storage materials, corrosion and protection of Mg alloys in 2023. In addition, future research directions are proposed based on the challenges and obstacles identified throughout this review.
{"title":"Research advances of magnesium and magnesium alloys globally in 2023","authors":"Jia She, Jing Chen, Xiaoming Xiong, Yan Yang, Xiaodong Peng, Daolun Chen, Fusheng Pan","doi":"10.1016/j.jma.2024.10.001","DOIUrl":"https://doi.org/10.1016/j.jma.2024.10.001","url":null,"abstract":"Magnesium materials have attracted the attention of many researchers, and the related research is expanding. This article summarizes the advance in the research and development of magnesium materials globally in 2023 from bibliometric and scientific perspectives. More than 4680 articles on Mg and its alloys were published and indexed in the Web of Science (WoS) Core Collection database last year. The bibliometric analyses show that the traditional structural Mg alloys, functional Mg materials, and corrosion and protection of Mg alloys are still the main research focus. Therefore, this review paper mainly focuses on the research progress of Mg cast alloys, Mg wrought alloys, bio-magnesium alloys, Mg-based energy storage materials, corrosion and protection of Mg alloys in 2023. In addition, future research directions are proposed based on the challenges and obstacles identified throughout this review.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142487060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Conducting polymers hold great prospects in energy storage, especially in the field of flexible energy storage, however, their broad applications are limited due to the poor processability, difficulty in structural design diversity and unsatisfactory performance when used alone. Herein, the processability of PEDOT in organic phase is significantly enhanced by surfactant modification via a self-assembly process, contributing to the convenient and low-cost construction of 3D PEDOT architecture. Importantly, the PEDOT and rGO can be introduced into the same porous structure synchronously and conveniently. Superior capacitive performance is shown for the porous PEDOT/rGO film benefits from the combination of PEDOT with excellent electrochemical stability, rGO with high conductivity and porous structure with abundant active sites and chambers for electrolyte storage. The porous PEDOT/rGO film can be used as a scaffold for the deposition of conductive polymers. For example, once PPy is deposited, a high specific capacitance of 407.8 F g-1 at a current density of 0.5 A g-1, accompanied by a prominent capacitance retention of 90% after 5000 cycles are achieved. When it is used to construct the symmetric supercapacitor (SSC), a high energy density of 52.9 Wh kg-1 at the power density of 200.2 W kg-1 is delivered, with a high capacitance retention of 85%. Moreover, it shows excellent mechanical flexibility upon multiple bending cycles, rendering great potential in portable or wearable energy storage devices.
{"title":"Scalable Fabrication of Flexible 3D PEDOT/rGO Scaffold for High-Performance Supercapacitors via a Self-Assembly Method","authors":"Xiaoting Liu, Yingyi Ma, Yu Si, Xinzheng Li, Xinran Li, Jingfang Li","doi":"10.1016/j.electacta.2024.145276","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145276","url":null,"abstract":"Conducting polymers hold great prospects in energy storage, especially in the field of flexible energy storage, however, their broad applications are limited due to the poor processability, difficulty in structural design diversity and unsatisfactory performance when used alone. Herein, the processability of PEDOT in organic phase is significantly enhanced by surfactant modification via a self-assembly process, contributing to the convenient and low-cost construction of 3D PEDOT architecture. Importantly, the PEDOT and rGO can be introduced into the same porous structure synchronously and conveniently. Superior capacitive performance is shown for the porous PEDOT/rGO film benefits from the combination of PEDOT with excellent electrochemical stability, rGO with high conductivity and porous structure with abundant active sites and chambers for electrolyte storage. The porous PEDOT/rGO film can be used as a scaffold for the deposition of conductive polymers. For example, once PPy is deposited, a high specific capacitance of 407.8 F g<sup>-1</sup> at a current density of 0.5 A g<sup>-1</sup>, accompanied by a prominent capacitance retention of 90% after 5000 cycles are achieved. When it is used to construct the symmetric supercapacitor (SSC), a high energy density of 52.9 Wh kg<sup>-1</sup> at the power density of 200.2 W kg<sup>-1</sup> is delivered, with a high capacitance retention of 85%. Moreover, it shows excellent mechanical flexibility upon multiple bending cycles, rendering great potential in portable or wearable energy storage devices.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":6.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142487161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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