全聚合物水性超级电容器用聚合物/SiO2纳米复合质子分离器的构建

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources Pub Date : 2025-10-21 DOI:10.1016/j.jpowsour.2025.238645

Guangrun Lu, Jiawen Zhang, Aiping Zhu

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引用次数: 0

摘要

全聚合物水性超级电容器，具有完全由聚合物制成的电极和分离器，这使它们具有加工简单，固有安全性和可持续性等优点。在酸性水介质中，隔膜的机械性能和高质子输运仍然存在挑战。本研究采用具有柔性分子链的三种两亲性聚合物：聚乙烯醇（PVA）、聚氨酯（PU）乳胶和聚丙烯酸酯（PA）乳胶，制备了用于polyaniline@Graphene （PANI@GNP）对称超级电容器的聚合物/SiO2纳米复合质子分离器。采用PU/SiO2纳米复合质子分离器制备的超级电容器容量高达706 F/g，循环10000次后容量保持率高达83.6%。这种优异的电化学性能是由于质子分离器具有足够的力学性能来稳定PU与纳米二氧化硅之间氢键形成的质子传输通道。

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Construction of polymer/SiO2 nanocomposite proton separators for all-polymer aqueous supercapacitor

All-polymer aqueous supercapacitor, featuring electrodes and separators made entirely from polymers, which gives them advantages such as the processing ease, inherent safety, and sustainability. Challenges persist with the mechanical properties and high proton transport of separators in aqueous acidic medium. In this study, three types of amphiphilic polymers: polyvinyl alcohol (PVA), polyurethane (PU) latex, and polyacrylate (PA) latex with flexible molecular chains, are used to prepare polymer/SiO₂ nanocomposite proton separators for the polyaniline@Graphene (PANI@GNP) symmetrical supercapacitors. The supercapacitor with PU/SiO₂ nanocomposite proton separator exhibits a high capacity of 706 F/g, and a capacity retention of 83.6 % after 10000 cycles. This excellent electrochemical performance is due to the sufficient mechanical properties of proton separator to stabilize the proton transport channels formed by hydrogen bonds between PU and nanosilicas.

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来源期刊

Journal of Power Sources 工程技术-电化学

CiteScore

16.40

自引率

6.50%

发文量

1249

审稿时长

36 days

期刊介绍： The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells. Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include: • Portable electronics • Electric and Hybrid Electric Vehicles • Uninterruptible Power Supply (UPS) systems • Storage of renewable energy • Satellites and deep space probes • Boats and ships, drones and aircrafts • Wearable energy storage systems