活性/非活性材料性质对超级电容性能影响

Effect of active/inactive material properties on performance of supercapacitor

在电化学储能领域,超级电容器因工作温度宽、充放电速率快、长循环寿命和高功率密度等特点有着重要用途。但在日常生活应用中仍存在自放电率较高、能量密度不够高、容量衰减快速等系列问题,这严重阻碍了超级电容的商业化应用进程。为了解决这些问题,在尽可能的维持其高功率密度特点的同时,提高超级电容其他方面的性能,研究者们开发了超级电容新体系,研发新材料、创建理论机制等方式方法,致力于加速超级电容器产业的应用。对此,本文以近年来在该领域的研究为基础,主要从电极制备过程中所用的活性材料、非活性材料(导电剂、黏结剂以及集流体)的材料性质出发,介绍了其对超级电容性能的影响,并在此基础上提出合理性建议,为未来发展高性能超级电容器提供有利帮助。

In the field of electrochemical energy storage,supercapacitors have important applications due to their wide operating temperature,fast charge and discharge rate,long cycle life and high power density.However,in daily life,there are still a series of problems such as high self-discharge rates,low energy density and rapid capacity decay,which seriously hinder the commercial application of supercapacitors.To solve these problems,while maintaining its high power density characteristics as much as possible,and improve the performance of supercapacitors in other aspects,researchers have developed new systems of supercapacitors,developed new materials,created theoretical mechanisms and other methods to accelerate the application of supercapacitors.In this regard,based on the research in this field in recent years,this paper mainly introduces the influence of active materials and inactive materials(conductive agents,adhesives and current collectors)used in the electrode preparation process on the performance of supercapacitors,and puts forward reasonable suggestions on this basis to provide favorable help for the development of high-performance supercapacitors in the future.