赝电容的起源和本体相赝电容的实现  

Origin of Pseudocapacitance and Achieving Bulk Pseudocapacitance

作　　者：董韬文 张伟[1,2,3,4,5,6] 郑伟涛[1,2,3,4,5] DONG Taowen;ZHANG Wei;ZHENG Weitao(Jilin University State Key Laboratory of Automotive Simulation and Control,Changchun 130012,China;Jilin University School of Materials Science&Engineering,Changchun 130012,China;Jilin University Key Laboratory of Automobile Materials(Ministry of Education),Changchun 130012,China;Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials,Changchun 130012,China;Jilin University International Center of Future Scienge,Changchun 130012,China;Electron Microscopy Center,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130012 [2]吉林大学材料科学与工程学院,长春130012 [3]吉林大学汽车材料教育部重点实验室,长春130012 [4]吉林省高效清洁能源材料国际科技合作重点实验室,长春130012 [5]吉林大学未来科学国际合作联合实验室,长春130012 [6]吉林大学电子显微镜中心,长春130012

出　　处：《硅酸盐学报》2024年第2期442-453,共12页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金重点项目(51932003)。

摘　　要：因兼具高能量密度、高功率密度和长循环寿命,赝电容材料引领了近年来超级电容器的发展。然而,赝电容材料仍面临着储能机制认知不足、未来发展方向模糊等挑战。本文基于国家自然科学基金重点项目“高能量/高功率电池型超级电容器-离子插层储能的电极材料构筑”的部分研究成果以及最新的文献报道,以典型赝电容材料为纲,简要回顾赝电容材料发展历史、重点讨论赝电容材料的储能机制、指出其储能机制中亟待厘清的问题。并在此基础上,提出赝电容材料未来发展的新思路-本体相赝电容,讨论了实现本体相赝电容的关键着力点和初步策略。Electrochemical energy storage(EES)is an essential technology in modern lifestyle.As two typical EES devices,batteries and supercapacitors have their own advantages and disadvantages.Pseudocapacitive materials have attracted recent attention.Such materials store charges via battery-like redox reactions,but have supercapacitor-like electrochemical behaviors.Therefore,pseudocapacitive materials have a considerable potential to simultaneously achieve both high energy and high power density as well as excellent stability,merging a unbridgeable gap between batteries and supercapacitors.However,the development of pseudocapacitive materials still encounter some serious challenges such as unclear energy storage mechanism,lack of alternative pseudocapacitive materials and vague future development directions.This review represented recent development on pseudocapacitive materials and briefly discussed their energy storage mechanism and the imperfections of the existing issues.Furthermore,we proposed a concept of bulk pseudocapacitance and realized a goal for the future development of pseudocapacitive materials.In addition,we also discussed some key factors and strategies for achieving such a bulk pseudocapacitance.The energy storage mechanisms of pseudocapacitive materials were discussed.The first pseudocapacitive material,i.e.,RuO_(2) thin film,was reported by Trasatti et al.in 1971.The thin film electrode exhibited a supercapacitor-like cyclic voltammetry curve but differed from the electric double layer in faradic origin.Although the electrochemical performance of RuO_(2) electrodes were enhanced via fabricating various nanostructures and introducing structural water,the energy storage mechanism of this electrode was not fully understood,and limited to reversible redox reaction at the surface,the content of structural water in crystal,fast proton transport and crystallinity of electrode,etc..MnO_(2) is another typical pseudocapacitive electrode,which was firstly reported by Lee and Goodenough in 1999.Simon and Gogotsi r

关 键 词：超级电容器 电极材料 储能机制 本体相赝电容 

分 类 号：TQ152[化学工程—电化学工业]