IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-06-01 Epub Date: 2026-03-10 DOI: 10.1016/j.nanoen.2026.111870

Sihang Gao , Lingjiang Long , Baocang Ding, Yongxi Liu, Yuqi Sun, Jiajia Chen, Guoqi Min

This work addresses a critical bottleneck in current self-powered vibration sensing for transmission lines, where existing methods rely on oversimplified mappings between vibration parameters and electrical signals, with lacking sustainable power for reliable deployment. First, a hybrid aeolian vibration harvester (HAVH) integrating a multilayer-elastic triboelectric nanogenerator (TENG) and a plug-cored electromagnetic generator (EMG) is proposed. Through structural optimization, the TENG achieves an open-circuit voltage of 498 V and a peak power of 4.4 mW in the 5–50 Hz, while the EMG supplies a short-circuit current of 23 mA and a peak power of 53 mW, enabling simultaneous energy harvesting and multimodal vibration signal acquisition. Second, nine vibration states are defined based on vibration frequency and amplitude characteristics. Triboelectric signals characterize their dynamic responses, and a mapping model is built by training a two-dimensional convolutional neural network (2D-CNN) on experimental data, which learns to extract discriminative features from triboelectric signals and establish the relationship between vibration excitations and corresponding output patterns. Additionally, an integrated power-management and signal-processing circuit is designed to provide stable power while enabling vibration signal processing. Finally, a self-powered system integrating the HAVH, circuit module, and upper computer demonstrates 99.5% recognition accuracy for all nine vibration states with graded warning, offering a viable approach for intelligent sensing of power transmission systems.

这项工作解决了目前输电线路自供电振动传感的一个关键瓶颈，即现有方法依赖于振动参数和电信号之间过于简化的映射，缺乏可靠部署的可持续电力。首先，提出了一种集成多层弹性摩擦电纳米发电机（TENG）和插芯电磁发电机（EMG）的混合型风成振动采集器（HAVH）。通过结构优化，TENG在5-50 Hz范围内的开路电压为498 V，峰值功率为4.4 mW，而EMG提供的短路电流为23 mA，峰值功率为53 mW，能够同时收集能量和采集多模态振动信号。其次，根据振动频率和振幅特征定义了9种振动状态；摩擦电信号表征其动态响应特征，通过训练二维卷积神经网络（2D-CNN）在实验数据上建立映射模型，学习从摩擦电信号中提取判别特征，建立振动激励与相应输出模式之间的关系。此外，集成电源管理和信号处理电路的设计，以提供稳定的电源，同时使振动信号处理。最后，集成了HAVH、电路模块和上位机的自供电系统对所有9种振动状态的识别准确率达到99.5%，并具有分级预警，为电力传输系统的智能传感提供了一种可行的方法。

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引用次数: 0

A highly-integrated flexible triboelectric vibration sensing system for intelligent industrial monitoring on curved surfaces 一种高度集成的柔性摩擦电振动传感系统，用于智能工业曲面监测

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-06-01 Epub Date: 2026-03-10 DOI: 10.1016/j.nanoen.2026.111864

Yuxuan Rao , Xingge Yu , Zhenpeng Cai , Yulong Yuan , Li Xiang , Anlian Pan

The secure and stable operation of energy and industrial systems relies heavily on accurate vibration monitoring. However, conventional rigid vibration sensors face challenges in achieving conformal attachment to the curved surfaces ubiquitous in industrial equipment, leading to signal distortion and limiting deployment flexibility. While emerging flexible sensors offer some improvements, they often encounter limitations such as sensitivity to electromagnetic interference, poor low-frequency response, or complex fabrication processes. To address these challenges, this study presents a fully flexible, highly-integrated triboelectric vibration monitoring system centered on a conical microstructure-based flexible triboelectric vibration sensor (CMF-TVS) for intelligent mechanical condition monitoring. At the device level, the CMF-TVS is constructed by coupling a thermoplastic polyurethane (TPU) nanofiber film with a polydimethylsiloxane (PDMS) layer featuring conical microstructures. This point-contact triboelectric interface lowers the mechanical activation threshold and enables stable signal generation under small-amplitude excitation. The CMF-TVS achieves a broadband frequency response of 30–1000 Hz, detects vibration amplitudes as small as 0.127 μm, and maintains stability over 12,000 cycles. Benefiting from the intrinsic flexibility of both the sensing unit and structural design, the system conforms robustly to planar and curved surfaces. Furthermore, the system integrates a hybrid neural network, achieving a remarkable state recognition accuracy of 98.75% for eight different mechanical operating conditions, demonstrating significant potential for self-powered, in-situ vibration monitoring in complex industrial environments. This work provides a readily deployable, flexible solution for achieving long-term and in-situ vibration monitoring in practical complex industrial environments.

能源和工业系统的安全稳定运行在很大程度上依赖于精确的振动监测。然而，传统的刚性振动传感器在实现工业设备中普遍存在的曲面的保形附着方面面临挑战，导致信号失真并限制了部署灵活性。虽然新兴的柔性传感器提供了一些改进，但它们经常遇到诸如对电磁干扰的灵敏度，低频响应差或制造工艺复杂等限制。为了应对这些挑战，本研究提出了一种完全灵活、高度集成的摩擦电振动监测系统，该系统以基于锥形微结构的柔性摩擦电振动传感器（CMF-TVS）为中心，用于智能机械状态监测。在器件层面，CMF-TVS由热塑性聚氨酯（TPU）纳米纤维薄膜与具有锥形微结构的聚二甲基硅氧烷（PDMS）层耦合而成。这种点接触摩擦电界面降低了机械激活阈值，在小振幅激励下能够产生稳定的信号。CMF-TVS实现了30-1000 Hz的宽带频率响应，检测振动幅度小至0.127 μm，并在12,000次循环中保持稳定性。得益于传感单元和结构设计固有的灵活性，该系统对平面和曲面具有较强的适应性。此外，该系统集成了一个混合神经网络，在8种不同的机械操作条件下实现了98.75%的状态识别准确率，显示出在复杂工业环境中进行自供电、现场振动监测的巨大潜力。这项工作为在实际复杂的工业环境中实现长期和原位振动监测提供了一种易于部署、灵活的解决方案。

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引用次数: 0

Li-based NbOx self-rectifying memristor crossbar arrays for precisely reversible weight programming 用于精确可逆权重编程的锂基NbOx自整流忆阻交叉栅阵列

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-06-01 Epub Date: 2026-03-10 DOI: 10.1016/j.nanoen.2026.111869

Jeong Hyeon Son, Hyun-Sik Kim, Ki-Hoon Son, Yun-Seo Shin, Dae-Hee Han, Hong-Sub Lee

With the advancement of large AI models, the need for acceleration hardware for energy-efficient artificial neural networks (ANNs) computations is becoming increasingly important. Memristor-based crossbar arrays (MCA) offer promising in-memory computing for AI acceleration but face challenges like device-to-device (D2D) variation, cycle-to-cycle (C2C) variation, and non-ideal weight updates due to stochastic ion migration. To mitigate these issues in edge inference applications, this study explores inference-only passive MCAs that enable reliable transfer of pre-trained weights from servers to hardware arrays. We fabricated self-rectifying Li-based amorphous NbO_x memristors using atomic layer deposition (ALD), achieving interface-type resistive switching via Li ion injection/recovery from electrodes. Transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), and 3D secondary ion mass spectrometry (SIMS) confirmed the mechanism: Li interstitial defects modulate Nb valence states (Nb^5 + to Nb⁴⁺), enabling multi-bit conductance tuning with asymmetric interfaces for sneak-current suppression. A 32 × 32 passive MCA was implemented, programming 1024 cells to 16 conductance states (4 bits). Excluding breakdowns, 99.8% and 99.4% achievement rates were obtained for two target maps via iterative potentiation/depression pulses. This demonstrates reliable weight transplantation, paving the way for energy-efficient, high-reliability AI inference hardware in edge devices.

随着大型人工智能模型的进步，对节能人工神经网络（ann）计算的加速硬件的需求变得越来越重要。基于记忆电阻的交叉棒阵列（MCA）为人工智能加速提供了有前途的内存计算，但面临着诸如设备到设备（D2D）变化、周期到周期（C2C）变化以及随机离子迁移导致的非理想权重更新等挑战。为了缓解边缘推理应用中的这些问题，本研究探索了仅推理的被动MCAs，它能够将预训练的权重从服务器可靠地传输到硬件阵列。我们利用原子层沉积（ALD）技术制备了自整流的锂基非晶NbOx忆阻器，通过注入/从电极回收锂离子实现了界面型电阻开关。透射电子显微镜（TEM）、电子能量损失谱（EELS）和三维二次离子质谱（SIMS）证实了其机制：Li间隙缺陷调制Nb价态（Nb5 +至Nb4+），实现了非对称界面的多比特电导调谐，从而抑制了潜流。实现了一个32 × 32无源MCA，将1024个单元编程为16个电导状态（4位）。在排除故障的情况下，通过迭代增强/抑制脉冲对两幅目标图的成功率分别为99.8%和99.4%。这证明了可靠的权重移植，为边缘设备中节能、高可靠性的人工智能推理硬件铺平了道路。

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引用次数: 0

Electrochemo-mechanics unlocks hidden dynamics of lithium plating under stacking pressure 电化学力学揭示叠加压力下镀锂的隐藏动力学

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-01-23 DOI: 10.1016/j.nanoen.2026.111751

Amit Bhowmick , Bo Rui , Shuguo Sun , Xijun Tan , Bingqing Wei , Youngwon Hahn , Sandeep Kulathu , Victor Oancea , Wenquan Lu , Jun Xu

Understanding and mitigating lithium plating remains one of the most pressing challenges in advancing the safety and longevity of lithium-ion batteries (LIBs). Here, we present a novel integrative framework that combines in-operando swelling force measurements with a physics-based electro-chemo-mechanical model to uncover previously inaccessible insights into lithium plating dynamics under mechanical constraints. Unlike existing approaches that focus primarily on electrochemical signatures, our approach captures the coupled mechanical responses of commercial pouch cells during cycling, revealing how mechanical constraints fundamentally alter degradation pathways. We demonstrate that the use of a moderate stacking pressure suppresses lithium plating and enhances lithium stripping. This mechanically driven structural effect, coupled with the electrochemical process, significantly extends the linear aging regime in LIBs. Intriguingly, intermittent capacity recovery events that were observed during the battery cycling suggest dynamic lithium reactivation, a phenomenon rarely captured in real-time. This study pioneers a stress-aware methodology for diagnosing and managing lithium plating, establishing a new paradigm for real-time battery health monitoring. The findings offer transformative implications for the design of durable, high-performance LIB systems, opening new avenues for intelligent control strategies in battery management systems.

在提高锂离子电池（lib）的安全性和寿命方面，了解和减轻锂电镀仍然是最紧迫的挑战之一。在这里，我们提出了一个新的综合框架，将作业中膨胀力测量与基于物理的电化学力学模型相结合，以揭示以前无法获得的机械约束下的锂电镀动力学见解。与现有的主要关注电化学特征的方法不同，我们的方法捕获了商业袋状电池在循环过程中的耦合机械响应，揭示了机械约束如何从根本上改变降解途径。我们证明了适度的堆积压力抑制了锂的电镀，并增强了锂的剥离。这种机械驱动的结构效应，加上电化学过程，显著延长了lib的线性老化状态。有趣的是，在电池循环过程中观察到的间歇性容量恢复事件表明动态锂再激活，这是一种很少实时捕获的现象。这项研究开创了一种压力感知方法，用于诊断和管理锂镀层，为实时电池健康监测建立了新的范例。这一发现为设计耐用、高性能的LIB系统提供了革命性的意义，为电池管理系统的智能控制策略开辟了新的途径。

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引用次数: 0

Multifunctional zero-dimensional hybrid halide for multiscale buried interface planarization in perovskite solar cells 用于钙钛矿太阳能电池多尺度埋藏界面平面化的多功能零维杂化卤化物

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-01-30 DOI: 10.1016/j.nanoen.2026.111770

Shuo Wang , Dongliang Bai , ZhenHua Li , Shaoan Yang , Huanyu Chen , Zhen Guan , Xuejie Zhu , Dong Yang , Zhiwen Jin

The buried interface between electron transport layer (ETL) and perovskite absorber often induce the awful properties of perovskite film such as interfacial defects, trenched structure and ion migration, hindering improving efficiency and stability of perovskite solar cells (PSCs). Here, we present a multiscale planarized interface regulation (MPIR) strategy by introducing π-conjugated zero-dimensional (0D) metal halide, BPP₂MnBr₄ (BPP⁺ = C₂₅H₂₂P⁺), as multifunctional interlayer on SnO₂. The π-conjugated multi-phenyl framework enables strong coupling with adjacent functional layers, while the 0D configuration provides quantum confinement and structural robustness. Theoretical and experimental analyses reveal that BPP₂MnBr₄ increases the formation energy of non-photovoltaic phase (δ-FAPbI₃), thus improving phase purity. Additionally, buried interface modified by BPP₂MnBr₄ flattens grain boundary trenches to release residual stress for perovskite film. Benefiting from MPIR achieves a high efficiency of 25.88 %, and good stability for maintaining 92.0 % of initial efficiency after 1000 h of continuous light irradiation in N₂ without encapsulation of perovskite devices. Besides, the resulted solar module with an active area of 25.74 cm² (6.5 cm

\times

6.5 cm

\times

9 sub-cells) exhibits a PCE of 22.37 % with excellent uniformity. These results establish π-conjugated 0D metal halides as multifunctional interlayers capable of simultaneously improving structural robustness and operational reliability in perovskite photovoltaics.

电子传输层（ETL）与钙钛矿吸收体之间的隐埋界面往往导致钙钛矿薄膜的界面缺陷、沟槽结构和离子迁移等不良性质，阻碍了钙钛矿太阳能电池（PSCs）效率和稳定性的提高。本文通过引入π共轭零维（0D）金属卤化物BPP2MnBr4 （BPP+ = C25H22P+）作为SnO2上的多功能中间层，提出了一种多尺度平面化界面调控（MPIR）策略。π共轭多苯基结构使其能够与相邻的功能层强耦合，而0D结构提供了量子约束和结构鲁棒性。理论和实验分析表明，BPP2MnBr4提高了非光伏相（δ-FAPbI3）的形成能，从而提高了相纯度。此外，BPP2MnBr4修饰的埋藏界面使晶界沟槽变得平坦，从而释放钙钛矿膜的残余应力。利用MPIR可获得25.88 %的高效率，且在不封装钙钛矿器件的情况下，在N2中连续光照1000 h后，可保持92.0 %的初始效率。此外，该太阳能组件的有效面积为25.74 cm2（6.5 cm×6.5 cm ×9亚电池），PCE为22.37%，均匀性良好。这些结果表明，π共轭0D金属卤化物是一种多功能中间层，能够同时提高钙钛矿光伏电池的结构稳健性和运行可靠性。

{"title":"Multifunctional zero-dimensional hybrid halide for multiscale buried interface planarization in perovskite solar cells","authors":"Shuo Wang , Dongliang Bai , ZhenHua Li , Shaoan Yang , Huanyu Chen , Zhen Guan , Xuejie Zhu , Dong Yang , Zhiwen Jin","doi":"10.1016/j.nanoen.2026.111770","DOIUrl":"10.1016/j.nanoen.2026.111770","url":null,"abstract":"<div><div>The buried interface between electron transport layer (ETL) and perovskite absorber often induce the awful properties of perovskite film such as interfacial defects, trenched structure and ion migration, hindering improving efficiency and stability of perovskite solar cells (PSCs). Here, we present a multiscale planarized interface regulation (MPIR) strategy by introducing π-conjugated zero-dimensional (0D) metal halide, BPP<sub>2</sub>MnBr<sub>4</sub> (BPP<sup>+</sup> = C<sub>25</sub>H<sub>22</sub>P<sup>+</sup>), as multifunctional interlayer on SnO<sub>2</sub>. The π-conjugated multi-phenyl framework enables strong coupling with adjacent functional layers, while the 0D configuration provides quantum confinement and structural robustness. Theoretical and experimental analyses reveal that BPP<sub>2</sub>MnBr<sub>4</sub> increases the formation energy of non-photovoltaic phase (δ-FAPbI<sub>3</sub>), thus improving phase purity. Additionally, buried interface modified by BPP<sub>2</sub>MnBr<sub>4</sub> flattens grain boundary trenches to release residual stress for perovskite film. Benefiting from MPIR achieves a high efficiency of 25.88 %, and good stability for maintaining 92.0 % of initial efficiency after 1000 h of continuous light irradiation in N<sub>2</sub> without encapsulation of perovskite devices. Besides, the resulted solar module with an active area of 25.74 cm<sup>2</sup> (6.5 cm<span><math><mo>×</mo></math></span>6.5 cm <span><math><mo>×</mo></math></span>9 sub-cells) exhibits a PCE of 22.37 % with excellent uniformity. These results establish π-conjugated 0D metal halides as multifunctional interlayers capable of simultaneously improving structural robustness and operational reliability in perovskite photovoltaics.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"150 ","pages":"Article 111770"},"PeriodicalIF":17.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146089608","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}

引用次数: 0

A self-powered single-transistor synchronous switching strategy toward efficient utilization of triboelectric energy 一种有效利用摩擦电能的自供电单晶体管同步开关策略

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-02-02 DOI: 10.1016/j.nanoen.2026.111773

Ruisi Zheng , Luyang Zheng , Jiaxing Li , Yifan Yang , Qinhao Zheng , Li Zhang , Kangqi Fan , Rusen Yang

Switching-mode energy management strategies (EMSs) play a pivotal role in promoting the utilization of triboelectric energy, but their implementation is predominantly through the simple series connection of a synchronous switching unit with a full-wave rectifier, which leads to overmany electronic components and hence overmuch energy dissipation. To address this issue, we propose herein a self-powered single-transistor synchronous switching strategy (SPST-3S) for triboelectric nanogenerators (TENGs), whose implementation depends only on a half-wave rectifier and a single NPN transistor, requiring the minimum number of electronic components for switching-mode EMSs so far. Through the rational combination of a transistor with a half-wave rectifier, the SPST-3S enables both real-time detection of the TENG voltage peak and automatic switching actions, achieving high energy conversion efficiency of 88.6 %. Theoretical analysis and experimental tests demonstrate that, with the SPST-3S, the optimal output impedance of a rotary TENG (R-TENG) is reduced by 99.97 % (from 650 MΩ to 0.19 MΩ) and the peak output current is increased by a factor of 44 (from 3.5 μA to 154 μA). In addition, sustaining the continuous operation of a hygrothermograph, which cannot be realized by the energy management circuit (EMC) based on the full-wave rectifier, is achieved by the EMC designed with the SPST-3S. This study introduces a distinctive and integrated EMS for TENGs, offering a promising technical route for achieving efficient utilization of triboelectric energy and thus advancing TENG’s application in various fields.

开关模式能量管理策略（EMSs）在促进摩擦电能的利用方面发挥着关键作用，但其实现主要是通过同步开关单元与全波整流器的简单串联，这导致电子元件过多，从而导致过多的能量消耗。为了解决这个问题，我们在此提出了一种用于摩擦纳米发电机（TENGs）的自供电单晶体管同步开关策略（SPST-3S），其实现仅依赖于半波整流器和单个NPN晶体管，迄今为止需要最少数量的开关模式EMSs电子元件。SPST-3S通过晶体管与半波整流器的合理组合，实现了TENG电压峰值的实时检测和自动开关动作，实现了88.6% %的高能量转换效率。理论分析和实验测试表明，使用SPST-3S后，旋转型TENG （R-TENG）的最佳输出阻抗降低了99.97% %（从650 MΩ降低到0.19 MΩ），峰值输出电流提高了44倍（从3.5 μA提高到154 μA）。此外，利用SPST-3S设计的电磁兼容电路实现了基于全波整流器的能量管理电路（EMC）无法实现的湿度计的持续工作。本研究介绍了一种独特的、集成的摩擦电能管理系统，为实现摩擦电能的高效利用提供了一条有前途的技术路线，从而推动了摩擦电能管理系统在各个领域的应用。

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引用次数: 0

Interfacial polarization–enhanced nanogenerator coupled with supercapacitor as a self-charging sustainable power source 界面极化增强纳米发电机与自充电超级电容器耦合作为可持续电源

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-02-02 DOI: 10.1016/j.nanoen.2026.111774

Venkatraju Jella , Swathi Ippili , Vaiyapuri Soundharrajan, Yun Hee Chang, Chunjoong Kim, Eun-Hye Hwang, Van-Hoang Vuong, Van-Quyen Truong, Soon-Gil Yoon

The development of self-charging power sources (SCPS) that integrate energy harvesting and storage functionalities is highly desirable for wearable and portable electronic devices, as they can provide continuous and sustainable power. Herein, a lead-free silver bismuth iodide (Ag₂BiI₅) perovskite-based hybrid piezoelectric-triboelectric nanogenerator (HP-TENG) is integrated with an aqueous zinc-ion supercapacitor (AZISC) to construct an efficient SCPS capable of simultaneously harvesting mechanical energy and storing it for subsequent use. Ag₂BiI₅ perovskite was synthesized by a facile antisolvent-assisted collision technique and subsequently incorporated into a poly(vinylidene fluoride) (PVDF) matrix to form composite films, whose dielectric properties were systematically tuned by varying the Ag₂BiI₅ content. The incorporation of Ag₂BiI₅ promoted the formation of electroactive β-PVDF phase and enhanced interfacial polarization, leading to remarkable dielectric improvement. The optimized flexible 20 wt% Ag₂BiI₅–PVDF composite-based HP-TENG delivered a high output voltage of 756 V, current of 19.8 μA, and power of 5.04 mW, while maintaining superior mechanical durability over 27,000 operating cycles. An aqueous zinc-ion supercapacitor is fabricated using commercial activated carbon as the positive electrode and Zn as the negative electrode. Finally, the integration of the HP-TENG with a supercapacitor enabled continuous mechanical energy harvesting and storage. The HP-TENG successfully charged the AZISC to 1.61 V within 160 min under an applied force of 5 kgf at a contact-separation frequency of 5 Hz, effectively powering small-scale electronic devices and demonstrating the potential of the developed SCPS for next-generation self-powered electronics.

集成能量收集和存储功能的自充电电源（SCPS）的开发非常适合可穿戴和便携式电子设备，因为它们可以提供连续和可持续的电力。本文将无铅碘化铋银（Ag2BiI5）钙钛矿基混合压电-摩擦电纳米发电机（HP-TENG）与水锌离子超级电容器（AZISC）集成在一起，构建了一个高效的SCPS，能够同时收集机械能并将其存储以供后续使用。采用易溶抗溶剂辅助碰撞技术合成了Ag2BiI5钙钛矿，并将其掺入聚偏氟乙烯（PVDF）基体中形成复合薄膜，通过改变Ag2BiI5含量系统地调整了其介电性能。Ag2BiI5的掺入促进了电活性β-PVDF相的形成，增强了界面极化，导致了显著的介电性能改善。优化后的柔性20 wt% Ag2BiI5-PVDF复合材料HP-TENG可提供756 V的高输出电压，19.8 μA的电流和5.04 mW的功率，同时在27,000多个操作循环中保持优异的机械耐久性。以商品活性炭为正极，锌为负极制备了一种含水锌离子超级电容器。最后，HP-TENG与超级电容器的集成实现了连续的机械能收集和存储。HP-TENG在5 kgf的作用力下，在5 Hz的接触分离频率下，在160 min内成功地将AZISC充电到1.61 V，有效地为小型电子设备供电，并展示了开发的SCPS在下一代自供电电子产品中的潜力。

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引用次数: 0

Electric field-assisted construction of bionic directional channels enhances charge storage in MXene/Ecoflex triboelectric nanogenerators for self-powered sensing 电场辅助构建仿生定向通道增强MXene/Ecoflex摩擦电纳米发电机自供电传感中的电荷存储

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-01-23 DOI: 10.1016/j.nanoen.2026.111750

Yunfeng Wang , Haibao Mu , Huanmin Yao , Shasha He , Shuai Wang , Yiyun Yang , Yaxin Chen , Xinran Chen , Guanjun Zhang

Triboelectric flexible wearable sensors provide a new momentum for the intelligent and digital development of rehabilitation medicine, and effectively address the key challenges of sensor power supply, sensitivity, and comfort. However, the lack of reliable control methods for material doping makes it difficult to further enhance the sensitivity of triboelectric sensors. Inspired by the efficient water transport mechanism in plants, this study employed an AC electric field-assisted method to fabricate MXene/Ecoflex composite films (ACC films) with an oriented structure. The influence of the electric field on MXene orientation behavior and its formation mechanism were systematically investigated. Experimental results demonstrate that the oriented MXene filler effectively enhances the film's charge storage capacity and reduces charge dissipation, thus significantly improving the output performance of the triboelectric nanogenerator (TENG). The open-circuit voltage, short-circuit current, and charge density of ACC-TENG prepared under a 600 V/mm electric field increased by 25.2 %, 34 %, and 31 %, respectively, comparing to the film without an applied electric field. Ultimately, the constructed ACC-TENG was applied as a flexible sensor for human motion monitoring and rehabilitation assessment, achieving highly sensitive detection of subtle motion features such as joint flexion duration, flexion angle, and finger tremors during gripping (with conventional gripping signals reaching 20 V output). This provides innovative material design concepts and technical pathways for the advancement of intelligent rehabilitation medicine.

摩擦电柔性可穿戴传感器为康复医学智能化、数字化发展提供了新的动力，有效解决了传感器供电、灵敏度、舒适性等关键挑战。然而，由于缺乏可靠的材料掺杂控制方法，使得摩擦电传感器的灵敏度难以进一步提高。受植物高效的水分输送机制的启发，本研究采用交流电场辅助的方法制备了具有定向结构的MXene/Ecoflex复合膜（ACC膜）。系统地研究了电场对MXene取向行为的影响及其形成机理。实验结果表明，定向MXene填料能有效提高薄膜的电荷存储能力，降低电荷耗散，从而显著提高摩擦纳米发电机（TENG）的输出性能。在600 V/mm电场下制备的ACC-TENG的开路电压、短路电流和电荷密度分别比未加电场时提高了25.2 %、34 %和31 %。最终，构建的ACC-TENG被用作人体运动监测和康复评估的柔性传感器，实现了对关节屈曲持续时间、屈曲角度和抓握时手指震颤等细微运动特征的高灵敏度检测（常规抓握信号输出达到20 V）。这为智能康复医学的发展提供了创新的材料设计理念和技术途径。

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引用次数: 0

Band alignment and Cu+ long-range migration suppression enable excellent and stabilized thermoelectric performance in copper sulfide via endotaxial CsPbBr3 nanoprecipitates 通过内源性CsPbBr3纳米沉淀物使硫化铜具有优异稳定的热电性能

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-01-27 DOI: 10.1016/j.nanoen.2026.111757

Yi-Xin Zhang , Qi-Yong Chen , Jianrui Wang , Tian-Yu Yang , Zi-Yuan Wang , Xing Yang , Ze Li , Chong-Yu Wang , Lili Xi , Jiong Yang , Zhen-Hua Ge , Jing Feng , Jiaqing He

Band alignment has been extensively utilized in thermoelectric materials to enhance carrier mobility and suppress lattice thermal conductivity. However, its impact on ionic transport in superionic conductors remains largely unexplored. In such systems, the migration of Cu ions complicates carrier and phonon transport since the additional scattering effects and ionic conductivity. Herein, we propose a novel path of in-situ forming endotaxial CsPbBr₃ nanoprecipitates within a Cu_1.96S matrix. It is found that the valence band alignment and crystallographic coherence facilitate carrier mobility. The endotaxial nanostructures decrease ionic conductivity and lattice thermal conductivity by Cu ion suppression and all-scale phonon scattering enhancement. Consequently, a peak ZT of 2.4 is realized in Cu_1.96S-1.16 vol% CsPbBr₃ specimen at 973 K. This approach offers a novel framework for regulating carrier, phonon, and ion transport, with significant potential for advancing thermoelectrics and other functional material systems.

带对准已广泛应用于热电材料，以提高载流子迁移率和抑制晶格热导率。然而，它对超离子导体中离子输运的影响在很大程度上仍未被探索。在这样的系统中，由于额外的散射效应和离子电导率，Cu离子的迁移使载流子和声子的输运复杂化。在此，我们提出了一种在Cu1.96S基体中原位形成内源性CsPbBr3纳米沉淀的新途径。发现价带排列和晶体学相干有利于载流子迁移。内源性纳米结构通过抑制Cu离子和增强全尺度声子散射来降低离子电导率和晶格热导率。因此，在973 K时，Cu1.96S-1.16 vol.% CsPbBr3样品的ZT峰值为2.4。这种方法为调节载流子、声子和离子输运提供了一种新的框架，具有推进热电和其他功能材料系统的巨大潜力。

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引用次数: 0

Electro-active phase assisted all-fiber triboelectric nanogenerator (AF-TENG) for energy harvesting and human joint angle monitoring 用于能量收集和人体关节角度监测的电主动相位辅助全光纤摩擦电纳米发电机(AF-TENG

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy

Pub Date : 2026-04-01 Epub Date: 2026-02-08 DOI: 10.1016/j.nanoen.2026.111784

Satyaranjan Bairagi, Muhammad Zada, Corin Otesteanu, Carlo Menon

Triboelectric nanogenerators (TENGs) have attracted increasing interest in self-powered sensing and wearable energy harvesting; however, the role of electroactive phase engineering in fully flexible, fiber-based TENGs remains insufficiently explored. Here, we proposed a flexible, electroactive-phase-assisted all-fiber TENG (AF-TENG) comprising BaTiO₃ nanoparticles (BTO NPs)-incorporated polyvinylidene difluoride (PVDF) nanofibers as the tribo-negative layer and thermoplastic polyurethane (TPU) nanofibers as the tribo-positive layer. By synergistically combining electrospinning-induced in situ poling, mechanical stretching, and BTO-induced β-phase nucleation, the electroactive phase of PVDF was effectively tuned at the material level. FTIR analysis quantified the electroactive phase through the β-phase fraction (F(β)) of 71 % for PVDF-1 %BTO compared to 63 % for pure PVDF. As a result, the optimized AF-TENG delivered an output voltage of ∼73 V and a current of ∼7.7 µA at 20 N and 4 Hz, whereas a peak power of ∼55.68 µW and a power density of ∼6.18 µW cm⁻² were observed. Unlike previously reported PVDF-BTO-based TENGs that rely on rigid or semi-rigid counter layers, the fully fibrous architecture presented here offers superior flexibility, conformability, and wearability, which makes it particularly suitable for on-body applications. The AF-TENG demonstrated practical functionality by charging capacitors, lighting LEDs, and powering a commercial stopwatch. Moreover, by integrating machine learning algorithms, the device enabled highly accurate human joint angle prediction, establishing a novel framework in which an all-fiber TENG simultaneously functions as an energy harvester and an intelligent, self-powered motion sensor. This work highlights electroactive phase engineering in an all-fiber platform as an effective strategy for advancing wearable, and intelligent self-powered sensing systems.

摩擦电纳米发电机（TENGs）在自供电传感和可穿戴能量收集方面引起了越来越多的兴趣；然而，电活性相工程在全柔性纤维基TENGs中的作用仍然没有得到充分的探索。在这里，我们提出了一种柔性的、电活性相辅助的全纤维TENG (AF-TENG)，它由BaTiO₃纳米颗粒（BTO NPs）组成，其中含有聚偏二氟乙烯（PVDF）纳米纤维作为摩擦负层，热塑性聚氨酯（TPU）纳米纤维作为摩擦正层。通过静电纺丝诱导的原位极化、机械拉伸和bto诱导的β相成核的协同作用，在材料水平上有效地调节了PVDF的电活性相。FTIR分析通过β相分数（F(β)）量化了PVDF-1 %BTO的电活性相，而纯PVDF为63 %。结果，优化后的AF-TENG在20 N和4 Hz下的输出电压为~ 73 V，电流为~ 7.7 µa，峰值功率为~ 55.68 µW，功率密度为~ 6.18 µW cm⁻²。与之前报道的依赖于刚性或半刚性对抗层的PVDF-BTO-based teng不同，这里展示的全纤维结构提供了优越的灵活性、一致性和耐磨性，这使得它特别适合于身体应用。AF-TENG通过充电电容器、照明led和为商业秒表供电展示了实用功能。此外，通过集成机器学习算法，该设备能够高度精确地预测人体关节角度，建立了一个全新的框架，在这个框架中，全光纤TENG同时充当能量收集器和智能自供电运动传感器。这项工作强调了全光纤平台中的电活性相位工程是推进可穿戴和智能自供电传感系统的有效策略。

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引用次数: 0

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