Electrochemistry Communications最新文献_第8页

Urea-Tris doped 3D graphene for high-stability supercapacitors 尿素- tris掺杂3D石墨烯用于高稳定性超级电容器

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-16 DOI: 10.1016/j.elecom.2025.108004

Xuanhe Liu , Baiqing Sun , Lehao Lin , Gaimei Zhang , Hui Li , Jiazi Shi , Min Wu , Dongdong Wang , Jiandong Lu , Kang Du , Xiaoli Song

The commercialization of supercapacitors hinges critically on developing low-cost electrode materials capable of simultaneously delivering high energy density and long-term stability. To address this challenge, we developed a dual‑nitrogen doping strategy using tris(hydroxymethyl)aminomethane (Tris) and urea to fabricate three-dimensional nitrogen-doped graphene (URNG) through a one-step hydrothermal process. Characterization of the material reveals that the optimized nitrogen conformation of URNG has a 2.07 % increase in pyrrole-N content compared to single nitrogen-source doped graphene (NG), a change that significantly enhances the charge storage capacity while maintaining structural integrity. Electrochemical measurements demonstrate that the assembled symmetric supercapacitor achieves a high energy density of 57.2 Wh·kg⁻¹ at a power density of 670 W·kg⁻¹. The URNG electrodes deliver a specific capacitance of 194.2 F·g⁻¹ at 0.5 A·g⁻¹ (17.1 % higher than NG) while maintaining 87 % capacitance retention after 5000 cycles. The practical applicability of this material was successfully demonstrated by powering a 1.8 V LED device. This work not only provides a facile synthesis strategy but also offers fundamental insights into nitrogen configuration control for advanced energy storage systems.

超级电容器的商业化关键取决于开发能够同时提供高能量密度和长期稳定性的低成本电极材料。为了解决这一挑战，我们开发了一种双氮掺杂策略，使用三甲基氨基甲烷（tris）和尿素通过一步水热工艺制备三维氮掺杂石墨烯（URNG）。对材料的表征表明，优化后的URNG的氮构象与单一氮源掺杂石墨烯（NG）相比，吡咯- n含量增加了2.07%，这一变化在保持结构完整性的同时显著提高了电荷存储能力。电化学测量表明，在670 W·kg - 1的功率密度下，组装的对称超级电容器获得了57.2 Wh·kg - 1的高能量密度。URNG电极在0.5 a·g−1时的比电容为194.2 F·g−1（比NG高17.1%），在5000次循环后保持87%的电容保持率。通过为1.8 V LED器件供电，成功证明了该材料的实用性。这项工作不仅提供了一个简单的合成策略，而且为先进的储能系统提供了氮配置控制的基本见解。

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引用次数: 0

Corrigendum to “Conductive disposable screen-printed reduced graphene oxide-molybdenum disulfide electrode for electrochemical sensing applications” [Electrochem. Commun. 166 (2024) 107778] “用于电化学传感应用的导电一次性丝网印刷还原氧化石墨烯-二硫化钼电极”的勘误表[电化学]。common . 166 (2024) 107778]

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-16 DOI: 10.1016/j.elecom.2025.107993

Patiya Pasakon , Vitsarut Primpray , Jeerakit Thangphatthanarungruang , Wichayaporn Kamsong , Anurat Wisitsoraat , Wanida Laiwattanapaisal , Varol Intasanta , Chanpen Karuwan

引用次数: 0

Cycling stability of lithium-ion batteries with pressure-treated NCM811 cathodes NCM811负极加压处理锂离子电池循环稳定性研究

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-16 DOI: 10.1016/j.elecom.2025.108002

Yusuke Abe, Yuki Kumagai, Mahmudul Kabir, Seiji Kumagai

This study developed an effective approach for improving the cycling performance of NCM811-based lithium-ion batteries (LIBs) at a charge rate of 5C. The charge–discharge performance of LIBs with pressure-treated NCM811 cathodes was investigated. The cathode coating, comprising NCM811, acetylene black, and polyvinylidene fluoride, was compressed at pressures of 10–40 MPa. Galvanostatic charge–discharge tests revealed that a treatment pressure of 40 MPa improved the storage performance at ≥5C under the LIB full-cell configuration. After pressure treatment, NCM811-based LIBs exhibited excellent cycling stability over 500 charge–discharge cycles at 5C. After 500 cycles, energy-dispersive X-ray analysis confirmed that the dissolution of transition metals from the NCM811 cathode and their deposition at the graphite anode were inhibited. High-pressure treatment modified the morphology of the NCM811 cathodes, resulting in favorable electrochemical properties. The proposed NCM811 electrodes are promising for the development of power-type LIBs with high energy densities and long cycle lifetimes.

本研究为提高ncm811基锂离子电池（LIBs）在5C充电速率下的循环性能提供了一种有效的方法。研究了加压处理NCM811阴极的锂离子电池的充放电性能。阴极涂层由NCM811、乙炔黑和聚偏氟乙烯组成，在10-40 MPa的压力下压缩。恒流充放电试验结果表明，40 MPa处理压力可提高锂离子电池满电池配置下≥5C的存储性能。经过压力处理后，ncm811基lib在5C下的500次充放电循环中表现出优异的循环稳定性。500次循环后，能量色散x射线分析证实，过渡金属从NCM811阴极的溶解和在石墨阳极的沉积被抑制。高压处理改变了NCM811阴极的形貌，使其具有良好的电化学性能。所提出的NCM811电极有望开发具有高能量密度和长循环寿命的功率型锂离子电池。

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引用次数: 0

Actinobacillus succinogenes in bioelectrochemical systems – Comparative study of redox mediators 生物电化学系统中的琥珀酸放线杆菌。氧化还原介质的比较研究

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-15 DOI: 10.1016/j.elecom.2025.108003

Jan-Niklas Hengsbach , Marcel Cwienczek , Janik Haffelder , Nils Tippkötter , Roland Ulber

A promising strategy to enhance biotechnological succinate production with Actinobacillus succinogenes is the fermentation in bioelectrochemical systems (BES), where mediated extracellular electron transfer (MEET) plays a key role. In this context, the choice of redox mediator (RM) is important. However, current studies show a limited selection of RMs, which have only rarely been investigated for A. succinogenes. This study therefore analyses different RMs regarding their efficiency and compatibility with A. succinogenes in cathodic systems. In addition to key parameters such as toxicity, stability and redox potential, the total turnover number (TTN) was used as a performance indicator. Among the RMs tested, neutral red proved to be the most efficient mediator with a TTN value of 160.39 at a concentration of 0.1 mM and 23.32 ± 3.34 at 0.5 mM over 72 h. In contrast, riboflavin, safranin O, resazurin and methylene blue showed far poorer performance due to low TTN values, high toxicity or low stability. In addition, active secretion of endogenous RMs could most likely be excluded. The results prove that neutral red is currently the most suitable RM for the process and at the same time illustrate the considerable potential for optimisation in the development of ideal redox mediators for cathodic electro-fermentation.

在生物电化学系统（BES）中发酵是提高琥珀酸放线菌生物技术生产琥珀酸盐的一个有前途的策略，其中介导的细胞外电子转移（MEET）起着关键作用。在这种情况下，选择氧化还原介质（RM）是很重要的。然而，目前的研究表明，对琥珀酸芽孢杆菌的RMs选择有限，很少有研究。因此，本研究分析了不同RMs在阴极体系中的效率和与琥珀酸根的相容性。除毒性、稳定性和氧化还原电位等关键参数外，还以总周转数（TTN）作为性能指标。在试验中，中性红是最有效的介质，在0.1 mM浓度下TTN值为160.39，在0.5 mM浓度下TTN值为23.32±3.34，持续72 h。相比之下，核黄素、红黄素O、蓝靛素和亚甲蓝由于TTN值低、毒性高或稳定性低，表现出较差的性能。此外，内源性RMs的活跃分泌很可能被排除在外。结果证明，中性红色是目前最适合的氧化还原介质，同时也说明了理想的阴极电发酵氧化还原介质的优化开发具有相当大的潜力。

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引用次数: 0

Urea electrooxidation coupled with energy-saving H2 production using bimetallic sulfide heterojunctions 用双金属硫化物异质结耦合尿素电氧化节能制氢

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-14 DOI: 10.1016/j.elecom.2025.107999

Suzhen Bai , Kesheng Cao , Yi Zeng , Zhengshan Tian , Xiangxiang Du , Xingqun Zheng

The theoretical electrocatalytic potential for the urea oxidation reaction (UOR) is notably low at 0.37 V, positioning it as a promising alternative to hydrogen evolution reaction for traditional water electrolysis. In this study, we synthesized Ni_xS₆/MnS (NMS) heterojunction catalysts using a straightforward co-precipitation method. Initially, we prepared bimetallic hydroxides precursors (Ni/Mn(OH)₂), which were subsequently sulfurized to obtain the NMS heterojunctions. The formation of NMS heterojunctions could enhance charge transfer and improve electrical conductivity, significantly boosting the electrocatalytic UOR activity. The NMS heterojunctions facilitate electrocatalytic UOR at a low anodic potential of 0.7 V vs. Ag/AgCl, achieving a peak current density of 11.8 mA cm⁻², with effective electrochemical surface area and Tafel slope values of 6.23 mF cm⁻² and 78.3 mV dec⁻¹, respectively. Furthermore, when utilized as an anode for overall urea electrolysis within a dual-electrode system, the NMS heterojunctions obtained a higher current density of 13.2 mA cm⁻², double that of pure water electrolysis (6.1 mA cm⁻²). This work represents a significant advancement in employing nickel-based sulfide heterojunctions for catalyzing urea oxidation reaction.

尿素氧化反应（UOR）的理论电催化电位非常低，为0.37 V，这使其成为传统水电解析氢反应的一个有前景的替代反应。本研究采用共沉淀法合成了NixS6/MnS （NMS）异质结催化剂。首先，我们制备了双金属氢氧化物前体（Ni/Mn(OH)2），随后对其进行硫化以获得NMS异质结。NMS异质结的形成可以促进电荷转移，提高电导率，显著提高电催化UOR活性。NMS异质结在低阳极电位（0.7 V vs. Ag/AgCl）下促进电催化UOR，峰值电流密度为11.8 mA cm−2，有效电化学表面积和Tafel斜率分别为6.23 mF cm−2和78.3 mV dec−1。此外，当在双电极系统中用作尿素电解的阳极时，NMS异质结获得了13.2 mA cm - 2的更高电流密度，是纯水电解（6.1 mA cm - 2）的两倍。本研究在利用镍基硫化物异质结催化尿素氧化反应方面取得了重大进展。

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引用次数: 0

A review article on: Voltammetric detection of lead, mercury, chromium, and arsenic metal ions from environmental samples 综述了环境样品中铅、汞、铬和砷金属离子的伏安法检测

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-14 DOI: 10.1016/j.elecom.2025.107996

Andualem Ejigu , Molla Tefera , Atnafu Guadie

Detecting hazardous heavy metals like lead, cadmium, mercury, and arsenic is a significant global issue because of their high toxicity and environmental durability. While traditional laboratory methods provide accurate results, their high cost, complexity, and slow processing times restrict their practicality for widespread, on-site monitoring. In this regard, electrochemical techniques, especially voltammetry, have become a strong alternative, delivering a great mix of high sensitivity, portability, and affordability.

This review highlights recent advancements in innovative electrode materials, such as graphene-modified electrodes and sensors enhanced with metal nanoparticles, along with advanced stripping techniques like anodic stripping voltammetry (ASV) and square wave voltammetry (SWV). Thanks to these advancements, detection limits have improved significantly, often reaching the parts per billion (ppb) range, while the selectivity for specific metal ions has also been enhanced.

Additionally, the review critically examines methods for analyzing water, soil, and sediment samples, showcasing the promising capabilities of nanocomposite materials that greatly increase sensitivity and stability. It also emphasizes the importance of standardized protocols for reliable comparisons and discusses future research directions, including the development of new nanocomposite materials and the integration of these advanced ‘nanosensors’ into portable devices for real-time environmental monitoring.

检测有害重金属，如铅、镉、汞和砷，是一个重大的全球性问题，因为它们的高毒性和环境持久性。虽然传统的实验室方法提供准确的结果，但其高成本，复杂性和缓慢的处理时间限制了其广泛的现场监测的实用性。在这方面，电化学技术，特别是伏安法，已经成为一个强有力的替代方案，提供了高灵敏度，便携性和可负担性的良好组合。本文重点介绍了创新电极材料的最新进展，如石墨烯修饰电极和金属纳米颗粒增强传感器，以及先进的剥离技术，如阳极剥离伏安法（ASV）和方波伏安法（SWV）。由于这些进步，检测限有了显著提高，通常达到十亿分之一（ppb）的范围，同时对特定金属离子的选择性也得到了增强。此外，本文还对水、土壤和沉积物样品的分析方法进行了批判性的研究，展示了纳米复合材料在极大提高灵敏度和稳定性方面的潜力。它还强调了标准化协议对于可靠比较的重要性，并讨论了未来的研究方向，包括开发新的纳米复合材料和将这些先进的“纳米传感器”集成到用于实时环境监测的便携式设备中。

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引用次数: 0

MOF-clad FeTiO3: Synergistic suppression of material decomposition and capacity fading in lithium-ion battery anodes mof包覆FeTiO3：协同抑制锂离子电池阳极材料分解和容量衰退

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-14 DOI: 10.1016/j.elecom.2025.107998

Zhipeng Yuan, Xiaohuan Wang, Congjie Yang, Xinba Yaer

Titanium iron oxide (FeTiO₃) has emerged as a promising anode material for lithium-ion batteries due to its distinctive octahedral structure, natural abundance, and high theoretical specific capacity. However, practical implementation has been hindered by significant capacity fading during cycling and structural instability under high current densities. In this study, we developed an innovative solution impregnation strategy to construct a metal-organic framework (MIL-100) protective layer on FeTiO₃ particles (denoted as FeTiO₃-MOF). This engineered architecture effectively addresses two critical challenges: (1) suppressing active material dissolution and electrode pulverization through physical confinement, and (2) enhancing charge transfer kinetics via the formation of continuous conductive pathways. The optimized FeTiO₃-MOF composite demonstrates remarkable electrochemical performance, delivering a high reversible capacity of 1077.5 mAh g⁻¹ after 150 cycles at 0.1 A g⁻¹ and maintaining 222 mAh g⁻¹ after 1000 cycles at 1 A g⁻¹ - quadruple the capacity of pristine FeTiO₃ (59 mAh g⁻¹) under identical conditions. Systematic electrochemical analysis reveals significantly improved charge transfer characteristics and lithium-ion diffusion coefficients, effectively mitigating the rapid capacity decay typically observed at elevated current densities. More importantly, this work establishes a novel self-replenishment mechanism through the rational utilization of metal ions within the MOF matrix, which dynamically compensates for active material loss during prolonged cycling. The proposed surface engineering strategy provides an effective method for developing next-generation energy storage materials that combine high capacity with exceptional cycling stability.

氧化钛铁（FeTiO3）因其独特的八面体结构、天然丰度和较高的理论比容量而成为锂离子电池极具前景的负极材料。然而，在高电流密度下，循环过程中显著的容量衰减和结构不稳定阻碍了实际实施。在本研究中，我们开发了一种创新的溶液浸渍策略，在FeTiO3颗粒（标记为FeTiO3- mof）上构建金属有机框架（MIL-100）保护层。这种工程结构有效地解决了两个关键挑战：(1)通过物理限制抑制活性物质溶解和电极粉碎，(2)通过形成连续导电途径增强电荷转移动力学。优化后的FeTiO3- mof复合材料表现出优异的电化学性能，在0.1 a g−1下循环150次可提供1077.5 mAh g−1的高可逆容量，在1 a g−1下循环1000次可保持222 mAh g−1，是相同条件下原始FeTiO3 （59 mAh g−1）容量的四倍。系统的电化学分析表明，电荷转移特性和锂离子扩散系数显著改善，有效缓解了在高电流密度下通常观察到的快速容量衰减。更重要的是，本研究通过合理利用MOF基体内的金属离子，建立了一种新的自我补充机制，动态补偿长时间循环过程中活性物质的损失。所提出的表面工程策略为开发下一代储能材料提供了一种有效的方法，该材料结合了高容量和卓越的循环稳定性。

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引用次数: 0

Process compatibility analysis for hybrid electrochemical removal and accretion towards a multifunctional machine-tool: An application-oriented approach 面向多功能机床的混合电化学去除和吸附过程相容性分析：一种面向应用的方法

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-13 DOI: 10.1016/j.elecom.2025.107997

Muhammad Hazak Arshad , Anton Peeters , Xiaolei Chen , Dominiek Reynaerts , Krishna Kumar Saxena

The demand for multifunctional and multi-material parts has driven the development of hybrid manufacturing technologies. Laser-based additive and subtractive techniques offer design flexibility but are unsuitable for smart components, high-end aerospace and biomedical applications due to thermal defects. In contrast, electrochemical additive manufacturing (ECAM) and electrochemical machining (ECM) are non-contact in nature with minimal thermal load, which can preserve material properties while enabling material accretion and removal, respectively as governed by the Faraday's laws of electrolysis. However, sequential processing with ECM and ECAM is challenging to achieve on the same platform due to different compatible process windows, electrolytes, and localisation issues.

Therefore, this study presents successful hybridisation of maskless ECM and ECAM processes on a multifunctional machine-tool, enabling bi-directional feature fabrication (via ECAM) and shaping (via ECM) in one clamp, where the process localisation is achieved by an electrolyte confining air-column. The experiments examined the influence of process parameters and investigated process compatibility to demonstrate the potential of this hybrid technique. The air column at 1.1 bar improved process localisation by reducing the ECAM feature width by 60 % in comparison to no air-confinement (0 bar). Additionally, the best surface quality of ∼0.33 μm Sa with ECAM at 5 V was achieved at 50 % duty cycle with 20 μs pulse period as voltage pulsing allowed flushing of by-products from the interelectrode gap and shorter pulses reduced gas bubbles generation. Furthermore, it was possible to demonstrate layered manufacturing and mould repair applications using appropriate process parameters to avoid stray removal and accretion during bi-directional ECM and ECAM. These results represent a significant step in hybrid electrochemical manufacturing towards realising advanced multi-material and multi-functional component applications.

对多功能和多材料零件的需求推动了混合制造技术的发展。基于激光的增材和减材技术提供了设计灵活性，但由于热缺陷，不适合智能部件、高端航空航天和生物医学应用。相比之下，电化学增材制造（ECAM）和电化学加工（ECM）本质上是非接触的，具有最小的热负荷，可以在保持材料特性的同时实现材料的吸附和去除，分别受法拉第电解定律的支配。然而，由于不同的兼容过程窗口、电解质和本地化问题，在同一平台上实现ECM和ECAM的顺序处理是具有挑战性的。因此，本研究在多功能机床上成功地实现了无遮罩ECM和ECAM工艺的混合，实现了双向特征制造（通过ECAM）和成形（通过ECM）在一个夹具中，其中通过电解液限制气柱实现工艺定位。实验考察了工艺参数的影响，并研究了工艺兼容性，以证明这种混合技术的潜力。与无空气限制（0 bar）相比，1.1 bar的空气柱通过将ECAM特征宽度减少60%，改善了工艺定位。此外，在5 V电压下，在占空比为50%、脉冲周期为20 μs的条件下，ECAM的表面质量达到了最好的~ 0.33 μm Sa，因为电压脉冲允许副产物从电极间隙中冲洗出来，并且较短的脉冲减少了气泡的产生。此外，可以使用适当的工艺参数演示分层制造和模具修复应用，以避免双向ECM和ECAM过程中的杂散去除和增加。这些结果代表了混合电化学制造朝着实现先进多材料和多功能组件应用迈出的重要一步。

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引用次数: 0

Oxalate-assisted synthesis of MnCo2O4 nanoparticles on layered MXene (Ti3C2Tx) for supercapacitor application 草酸盐辅助层状MXene （Ti3C2Tx）合成纳米MnCo2O4用于超级电容器

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-06 DOI: 10.1016/j.elecom.2025.107995

S. Emami, M. Hasheminiasari, S.M. Masoudpanah, R. Omrani, S.P. Ghaemi

The synthesis of MnCo₂O₄/Ti₃C₂Tx composite powders was achieved through a hydrothermal method facilitated by oxalate assistance. To assess the influence of MXene levels (0, 25, and 50 wt%) on microstructure, structure, and electrochemical performance, modern characterization methods were applied in this study. The mixed manganese‑cobalt oxalates were precipitated on the layered MXene by adding a proper amount of oxalic acid to the Nitride solution. The MnCo₂O₄ nanoparticles were then crystallized by heat treatment at 450 °C for one hour in a nitrogen gas atmosphere. The pristine MnCo₂O₄ had a columnar-like morphology, which was transformed into a fine particulate microstructure by combining with MXene. These pristine MnCo₂O₄ powders indicated a higher specific capacitance of 1116 F g⁻¹, significantly exceeding the 640.5 Fg⁻¹ recorded for the pristine layered MXene. The Incorporation of 25 wt% layered MXene enhanced the specific capacitance to a remarkable 1500 Fg⁻¹, attributed to its finer microstructure. Under a current rate of 1 Ag⁻¹, the capacitor composed of MnCo₂O₄-25 wt% MXene//activated carbon achieved an energy density of 43.5 Wh kg⁻¹ at a power density of 1411 W kg⁻¹.

采用草酸盐辅助水热法制备了MnCo2O4/Ti3C2Tx复合粉体。为了评估MXene水平（0、25和50% wt%）对微观结构、结构和电化学性能的影响，本研究采用了现代表征方法。在氮化物溶液中加入适量草酸，可在层状MXene上析出混合的草酸锰钴。然后在氮气气氛中450℃热处理1小时使MnCo2O4纳米颗粒结晶。原始的MnCo2O4为柱状结构，与MXene结合后转变为细颗粒结构。这些原始的MnCo2O4粉末显示出更高的比电容，为1116 Fg−1，显著超过原始层状MXene的640.5 Fg−1。25 wt%的层状MXene的加入使其比电容提高到1500 Fg−1，这归功于其更精细的微观结构。在1ag−1的电流速率下，MnCo₂O₄- 25wt % MXene//活性炭组成的电容器在1411 W kg−1的功率密度下获得了43.5 Wh kg−1的能量密度。

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引用次数: 0

Developing PI@PANI composites for aqueous zinc-ion batteries 开发PI@PANI水性锌离子电池复合材料

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2025-07-05 DOI: 10.1016/j.elecom.2025.107994

Ya Zhao , Lintao Wu , Hexiang Zhong , Lin Li , Jiaxin Fan

Polyimide electrode materials exhibit good electrochemical performance; however, their low conductivity limits their application. To address this issue, this study synthesized polyaniline-polyimide (PI@PANI) composites through chemical oxidative polymerization and solvothermal methods. The effects of the polyaniline ratio on the morphology, specific surface area, molecular weight, and electrochemical performance of the composites were investigated. The PI@PANI maintained its characteristic morphology, and when the polyaniline ratio was higher, the specific surface area of the composites increased along with the increase of high molecular weight polymers, while thermal stability slightly decreased. As an electrode material in zinc half-cells, Zn//PI@PANI (PI@PANI-2, NTCDA: ANI = 1:1) showed good cycling performance and rate capability. At a current density of 250 mA/g, after 400 cycles, the capacity retention reached as high as 90 %. Additionally, during full cell tests, the PI@PANI// MnO₂ full cell maintained a high capacity retention of 86 % after 500 cycles at a current density of 200 mA/g. These results indicate that the PI@PANI composites have significant application potential in the field of electrochemical energy storage, providing theoretical guidance and experimental evidence for further optimizing the composition and structure of the composites to enhance their electrochemical performance.

聚酰亚胺电极材料具有良好的电化学性能；然而，它们的低导电性限制了它们的应用。为了解决这一问题，本研究通过化学氧化聚合和溶剂热法合成了聚苯胺-聚酰亚胺（PI@PANI）复合材料。考察了聚苯胺配比对复合材料形貌、比表面积、分子量和电化学性能的影响。PI@PANI保持了其特有的形态，当聚苯胺比例较高时，复合材料的比表面积随着高分子量聚合物的增加而增加，而热稳定性略有下降。作为锌半电池的电极材料，Zn//PI@PANI （PI@PANI-2, NTCDA: ANI = 1:1）具有良好的循环性能和倍率性能。在250 mA/g电流密度下，经过400次循环，容量保持率高达90%。此外，在全电池测试中，PI@PANI// MnO2全电池在200 mA/g电流密度下循环500次后保持86%的高容量保持率。结果表明，PI@PANI复合材料在电化学储能领域具有显著的应用潜力，为进一步优化复合材料的组成和结构以提高其电化学性能提供了理论指导和实验依据。

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引用次数: 0