Carbon最新文献

英文中文

Regulating microcrystalline and pore structures of hypercrosslinked polymer derived carbon via aromatic ring axial extension for potassium-ion storage 通过芳香环轴向延伸调节高交联聚合物衍生碳的微晶和孔结构，用于钾离子储存

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-14 DOI: 10.1016/j.carbon.2026.121771

Zhengyang Liu, Tao Yang, Yan Song, Ning Zhao, Xiaodong Tian, Shijie Wu, Zhanjun Liu

Hierarchically porous carbons (PCs) derived from hypercrosslinked polymers (HCPs) have emerged as promising anode materials owing to their tunable pore architecture and abundant defect sites. However, precise regulation of the microcrystalline structure and pore configuration remains a critical challenge for achieving fast potassium-ion transport. Herein, an aromatic ring axial extension of HCPs monomer regulation strategy is proposed to construct the HCPs structure by employing aromatic monomers with progressively extended conjugated planes, including benzene, naphthalene, and anthracene. After pyrolysis, a series of PCs with systematically evolved microcrystalline and pore structures are obtained. The results revealed that increasing the planar aromatic ring number promotes the formation of ordered graphitic domains and induces a transformation of pore architecture from open pores to closed pore frameworks. In particular, anthracene-based HCPs derived porous carbon (PC) exhibits an interwoven long-range ordered microcrystalline structure and the highest closed pore volume (0.062 cm³ g⁻¹), which is attributed to the enhanced graphitization of PCs effect of extended polycyclic aromatic hydrocarbon units. As a result, A-PC exhibit superior reversible capacity (214 mAh g⁻¹ after 200 cycles) at a current density of 0.05 A g⁻¹ and outstanding rate performance (0.05-5 A g⁻¹). Kinetic analysis and in-situ XRD measurements reveal a sequential potassium-ion storage mechanism. Furthermore, a potassium-ion hybrid capacitor (PIHC) constructed with optimized A-PC anode delivers a high energy density of 126 Wh kg⁻¹ at power density of 338 W kg⁻¹ and maintains stable for over 4000 cycles at 1 A g⁻¹. This research offers new insights into the molecular design strategies for regulating carbon microcrystalline evolution and pore structure as well as promotes the advancement of high rate potassium-ion storage in PC materials.

由超交联聚合物（HCPs）衍生的分层多孔碳（PCs）由于其可调节的孔隙结构和丰富的缺陷位点而成为有前途的阳极材料。然而，微晶结构和孔构型的精确调控仍然是实现钾离子快速传输的关键挑战。本文提出了一种芳香环轴向扩展的HCPs单体调控策略，利用苯、萘、蒽等共轭面逐渐扩展的芳香单体来构建HCPs结构。热解后得到了一系列具有系统演化的微晶结构和孔隙结构的pc。结果表明，平面芳环数的增加促进了有序石墨畴的形成，并诱导孔隙结构由开孔向闭孔框架转变。特别是，蒽基HCPs衍生多孔碳（PC）表现出相互交织的长程有序微晶结构和最高的闭孔体积（0.062 cm3 g−1），这是由于扩展多环芳烃单元增强了PC的石墨化效应。结果表明，a - pc在0.05 a g−1电流密度下表现出优异的可逆容量（200次循环后214 mAh g−1）和出色的倍率性能（0.05-5 a g−1）。动力学分析和原位XRD测量揭示了钾离子的顺序储存机制。此外，使用优化的a - pc阳极构建的钾离子混合电容器（PIHC）在功率密度为338 W kg−1时提供了126 Wh kg−1的高能量密度，并在1 a g−1时保持稳定超过4000次循环。该研究为调控碳微晶演化和孔隙结构的分子设计策略提供了新的见解，并促进了PC材料中高速率钾离子储存的进展。

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引用次数: 0

SELECTIVE BOTTOM-UP SYNTHESIS OF CARBON MATERIALS WITH A REACTIVE C–H BOND ADJACENT TO PYRIDINIC NITROGEN FROM BROMINATED FUSED BICYCLIC AROMATIC COMPOUNDS 从溴化融合双环芳香族化合物中选择性自下而上合成与吡啶氮相邻的c-h键的碳材料

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1016/j.carbon.2026.121742

Yui Negishi, Kota Kondo, Satoshi Sato, Yasuhiro Yamada

引用次数: 0

The micro-nano interfacial mechanism of polymer-carbon nanotubes for advanced bitumen nanocomposites 先进沥青纳米复合材料中聚合物-碳纳米管的微纳界面机理

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI: 10.1016/j.carbon.2026.121758

Qilin Yang, Hu Zhao, Qingnan Zhu, Mitsuyoshi Akiyama, Rigan Xu, Ning Xie, Yangming Gao, Chao Wu, Dawei Wang

The microscale structure of bitumen nanocomposites is critical to the development of durable, sustainable infrastructure using asphalt concrete. However, the design and control of microscale structure in bitumen through nanotechnology is an intricate process and remains a challenge. This study reports a bitumen nanocomposite designed with micro-nano interfacial structure that exhibits 1-2 orders of magnitude improvement in both strength and toughness compared to base bitumen. The designed micro-nano interfacial structure uses spherical particles of styrene-butadiene-styrene copolymer (SBS) as an elastic substrate on which to efficiently assemble carbon nanotubes (CNTs) on a macroscopic scale to form inter-laminar CNT arrays; the inter-laminar CNT arrays are adsorbed on or physically associated with the SBS particles and act like hook-and-loop fasteners to fasten adjacent SBS particles together. This structural reinforcement enables more effective synergistic interfacial interactions between the CNTs and SBS, thereby enhancing intermolecular forces with specific bitumen constituents, particularly through strong bonding with the aromatic-rich asphaltene and resin fractions. Life cycle cost analysis results indicate that under the given assumptions, the higher initial material cost of the B/SBS/CNT nanocomposite is offset by the lower discounted renewal cost, thus achieving better overall economy. Our findings reveal the potential of nanotechnology to enhance the durability and life-cycle cost-effectiveness of infrastructure materials, thereby supporting the development of more resilient and economically sustainable engineering solutions.

沥青纳米复合材料的微观结构是发展持久、可持续的沥青混凝土基础设施的关键。然而，利用纳米技术设计和控制沥青的微观结构是一个复杂的过程，仍然是一个挑战。本研究报道了一种具有微纳界面结构的沥青纳米复合材料，与基础沥青相比，其强度和韧性都提高了1-2个数量级。所设计的微纳界面结构采用苯乙烯-丁二烯-苯乙烯共聚物（SBS）的球形颗粒作为弹性衬底，在其上宏观高效地组装碳纳米管（CNTs），形成层间碳纳米管阵列；层间碳纳米管阵列被吸附在SBS颗粒上或与SBS颗粒物理相关，并像钩环扣一样将相邻的SBS颗粒固定在一起。这种结构增强使CNTs和SBS之间的协同界面相互作用更加有效，从而增强了与特定沥青组分的分子间作用力，特别是通过与富含芳烃的沥青质和树脂组分的强结合。寿命周期成本分析结果表明，在给定的假设条件下，B/SBS/CNT纳米复合材料较高的初始材料成本被较低的折扣更新成本所抵消，从而获得较好的整体经济性。我们的发现揭示了纳米技术在提高基础设施材料的耐久性和生命周期成本效益方面的潜力，从而支持开发更具弹性和经济上可持续的工程解决方案。

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引用次数: 0

MEASUREMENT AND EVALUATION OF THE HIGH-TEMPERATURE PHYSICAL PROPERTIES OF CARBON AND GRAPHITE PRODUCTS (PART I): THERMAL EXPANSION 碳和石墨制品高温物理性能的测量和评价（第一部分）：热膨胀

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1016/j.carbon.2026.121740

Norio Iwashita

引用次数: 0

Regulation mechanism of synergistic strength-ductility enhancement of CNTs@Ti/Al composites via modifying the Ti–Al interface with CNTs CNTs修饰Ti-Al界面对CNTs@Ti/Al复合材料强度-塑性增效的调控机理

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI: 10.1016/j.carbon.2026.121772

Yingying Zhang, Zunyan Xu, Jianhai Zhang, Guangchuan Wu, Li Fu, Liang Liu, Xiaofeng Chen, Jianhong Yi, Caiju Li

Conventional particle-reinforced aluminum matrix composites generally suffer from a strength-ductility trade-off, and interfacial structure and behavior are the key to breaking this bottleneck. In this work, carbon nanotubes@titanium (CNTs@Ti) hybrid-reinforced aluminum matrix composites were fabricated by spark plasma sintering (SPS). The influences of sintering temperature (500 °C, 560 °C, and 600 °C) on the microstructure and mechanical properties of the composites were systematically investigated, and the regulation mechanism of the Ti–Al interface modified by CNTs on the synergistic improvement of strength and ductility was emphatically revealed. The results show that the optimal sintering temperature of 560 °C achieved an optimized interface structure, and the composite exhibited excellent synergy of strength and ductility. A continuous non-brittle gradient interface of finely dispersed TiAl₃ and TiC phases and structurally intact CNTs is formed by precise control of atomic diffusion. The interface promotes the cross-interface dislocation transmission through controllable dislocation pinning, realizing strain coordination and stress self-relaxation effects, thereby activating the plastic deformation of Ti particles and achieving duplex-phase synergistic load bearing. When the sintering temperature rises to 600 °C, the TiAl₃ phase coarsens abnormally and induces severe dislocation tangling. CNTs react with Al to form brittle rod-like Al₄C₃, resulting in the simultaneous degradation of both strength and ductility. This study provides theoretical and experimental support for the interfacial design and strength-ductility synergy of high-performance hybrid-reinforced aluminum matrix composites.

传统的颗粒增强铝基复合材料通常存在强度与延性的权衡问题，而界面结构和性能是突破这一瓶颈的关键。采用火花等离子烧结（SPS）法制备了碳nanotubes@titanium （CNTs@Ti）混合增强铝基复合材料。系统研究了烧结温度（500 °C、560 °C和600 °C）对复合材料微观组织和力学性能的影响，重点揭示了CNTs改性Ti-Al界面协同提高强度和塑性的调控机制。结果表明：560 ℃的最佳烧结温度可获得最佳的界面结构，复合材料具有良好的强度和塑性协同性能。通过对原子扩散的精确控制，形成了由分散良好的TiAl3和TiC相和结构完整的CNTs组成的连续的非脆性梯度界面。界面通过可控位错钉住促进界面间位错传递，实现应变协调和应力自松弛效应，从而激活Ti颗粒的塑性变形，实现双相协同承载。当烧结温度升高到600 ℃时，TiAl3相异常粗化，并产生严重的位错缠结。CNTs与Al反应形成脆性棒状Al4C3，导致强度和塑性同时下降。本研究为高性能混合增强铝基复合材料的界面设计和强度-延性协同提供了理论和实验支持。

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引用次数: 0

Hierarchically porous and multicomponent synergistic SiC/Fe3Si@rGO composite aerogel for electromagnetic wave absorption 多级多孔多组分协同SiC/Fe3Si@rGO复合气凝胶用于电磁波吸收

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI: 10.1016/j.carbon.2026.121765

Baojie Zhang , Wanxin Zhi , Furong Liang , Longfei Zhang , Weixuan Wang , Zhuang Ma , Lihong Gao , Chen Ma

SiC nanofiber aerogels are considered promising for electromagnetic wave (EMW) absorption owing to their high-temperature stability and tunable electromagnetic parameters. However, their inherently low electrical conductivity and single loss mechanism significantly restrict their absorption performance. Herein, Fe₃Si/SiC composite nanofibers were synthesized via electrospinning followed by high-temperature pyrolysis. Subsequently, a hierarchically porous SiC/Fe₃Si@rGO composite aerogel with multicomponent synergy is then constructed by combining ice templating with graphene oxide incorporation. The resulting aerogel achieved a minimum reflection loss (RL_min) of −46.68 dB at 8.84 GHz with a thickness of 3.0 mm. Moreover, within a thickness range of 1.5–5.0 mm, the material maintains RL < −10 dB across the entire 4–18 GHz frequency range. Mechanism analysis reveals that the introduced Fe₃Si phase contributes magnetic loss, while the graphene sheets form a three-dimensional conductive network, enhancing both conductive loss and interfacial polarization. Additionally, the incorporation of graphene refines and enriches the pore structure, which optimizes impedance matching and promotes multiple scattering of EMWs. This work provides a viable strategy for the design of lightweight and high-performance EMW-absorbing materials.

碳化硅纳米纤维气凝胶由于其高温稳定性和可调的电磁参数而被认为是很有前途的电磁波吸收材料。然而，其固有的低电导率和单一损耗机制严重限制了其吸收性能。本文采用静电纺丝-高温热解法制备了Fe3Si/SiC复合纳米纤维。随后，通过将冰模板与氧化石墨烯结合，构建了具有多组分协同作用的分层多孔SiC/Fe3Si@rGO复合气凝胶。所得气凝胶在8.84 GHz处的最小反射损耗（RLmin）为−46.68 dB，厚度为3.0 mm。此外，在1.5-5.0 mm的厚度范围内，材料在整个4-18 GHz频率范围内保持RL <； −10 dB。机理分析表明，引入Fe3Si相有助于磁损耗，而石墨烯片形成三维导电网络，增强了导电损耗和界面极化。此外，石墨烯的加入细化和丰富了孔隙结构，优化了阻抗匹配，促进了emw的多次散射。这项工作为设计轻质、高性能的电磁吸波材料提供了一种可行的策略。

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引用次数: 0

Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required 外部封面-期刊名称，封面图片，卷刊细节，ISSN，封面日期，爱思唯尔标志和学会标志（如果需要）

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1016/S0008-6223(26)00558-0

引用次数: 0

PORE STRUCTURE EVOLUTION IN CYPRESS-DERIVED CARBON DURING HYDROTHERMAL TREATMENT AND SUBSEQUENT CARBONIZATION 水热处理及炭化过程中柏木碳孔隙结构演化

IF 12.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1016/j.carbon.2026.121743

Jun’ichi Hayashi, Isao Hasegawa, Kiyoharu Nakagawa

引用次数: 0

THE IMPROVED TRIBO-MECHANICAL PERFORMANCE OF MWCNT–hBN HYBRID REINFORCED Al NANOCOMPOSITES MWCNT-hBN杂化增强Al纳米复合材料摩擦力学性能的改善

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-06-01 Epub Date: 2026-06-10 DOI: 10.1016/j.carbon.2026.121630

Arka Ghosh , Nityananda Sahoo , Pankaj Shrivastava , Bappa Das , Syed Nasimul Alam , Parth Patel , Ankush Khansole , Bansod Sneha Bharat , Kalyani Tiwari , Velaphi Msomi

引用次数: 0

LOW-COST SYNTHESIS OF LARGE GRAPHENE OXIDE FLAKES BY THE TOTAL OXIDATION OF LARGE NATURAL GRAPHITE FLAKES 利用天然大石墨片的全氧化，低成本合成大氧化石墨烯片

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-06-01 Epub Date: 2026-06-10 DOI: 10.1016/j.carbon.2026.121621

Yuan-yuan Zhang , Jian-bin Mai , Wei Chen , Wen-long Zhang , Jing Liu , Hua-ping Liao , Jun-wei An , Jiong-hui Wang , Dong-mei Huang , Wei Lv , Hong-da Du , Fei-yu Kang

引用次数: 0

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