利用含有双稳态氧化还原位点的聚合物进行可逆和高密度储能

IF 2.3 4区 化学 Q3 POLYMER SCIENCE Polymer Journal Pub Date : 2023-12-25 DOI:10.1038/s41428-023-00857-7
Kenichi Oyaizu
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引用次数: 0

摘要

具有充电/放电可逆性的氧化还原活性聚合物被用于开发有机电池中的电活性材料,这种材料具有高功率率、柔韧性/可弯曲性和对环境无害的特性。聚合物的可逆电荷存储是通过氧化还原 "双稳态 "和交换反应实现的。氧化还原双稳态性是电化学可逆性的一个特征,是指氧化还原对的特性,其中还原态和氧化态的化学性质都很稳定,在大量储存期间不会褪色。聚合物层中氧化还原活性位点的电子自交换反应会产生电荷传播,从而支持耗尽式充电和放电。基于氢化/脱氢对和电子/质子交换反应的双稳态性,电荷存储可逆性的概念被扩展到氢存储可逆性,从而创造出氢载体聚合物这一类与能源相关的新型功能聚合物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Reversible and high-density energy storage with polymers populated with bistable redox sites
Redox-active polymers with charging/discharging reversibility are employed to develop electrode-active materials in organic batteries, which are characterized by high power rates, flexibility/bendability, and environmentally benign properties. Reversible charge storage with polymers is achieved by redox “bistability” and exchange reactions. Redox bistability is a feature of electrochemical reversibility, which refers to the properties of redox pairs in which both the reduced and oxidized states are chemically robust and do not fade during substantial storage periods. The electron self-exchange reactions of the redox-active sites populated in the polymer layer give rise to charge propagation in support of exhaustive charging and discharging. The concept of charge storage reversibility is extended to hydrogen storage reversibility based on the bistability of the hydrogenation/dehydrogenation pair and the electron/proton exchange reaction, creating hydrogen carrier polymers as a new class of energy-related functional polymers. In this review, we show that reversibility of charge storage occurs in polymers with bistable redox-active groups populated in the repeat units of a nonconjugated backbone, especially when an electron self-exchange reaction spreads throughout the polymer. We will also show that extending the idea of electron exchange to electron/proton exchange leads to reversible hydrogen storage based on the bistability of hydrogenated and dehydrogenated states and the equilibrium for hydrogenation.
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来源期刊
Polymer Journal
Polymer Journal 化学-高分子科学
CiteScore
5.60
自引率
7.10%
发文量
131
审稿时长
2.5 months
期刊介绍: Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews. Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below: Polymer synthesis and reactions Polymer structures Physical properties of polymers Polymer surface and interfaces Functional polymers Supramolecular polymers Self-assembled materials Biopolymers and bio-related polymer materials Polymer engineering.
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