Best practices for electrochemical characterization of supercapacitors  

作　　者：João Pedro Aguiar dos Santos Fernando Cesar Rufino Joǎo IYutaka Ota Rodolfo CFernandes Rafael Vicentini Cesar JBPagan Leonardo Morais Da Silva Hudson Zanin 

机构地区：[1]Brazilian Renewable Energies,Center for Innovation on New Energies,School of Electrical and Computer Engineering,University of Campinas,SP 13083-852,Brazil [2]School of Electrical and Computer Engineering,University of Campinas,SP 13083-852,Brazil [3]Department of Chemistry,Laboratory of Fundamental and Applied Electrochemistry,Federal University of Jequitinhonha e Mucuri's Valley,Rodovia MGT 367,km 583,5000,Alto da Jacuba,39100-000 Diamantina,MG,Brazil

出　　处：《Journal of Energy Chemistry》2023年第5期265-283,I0007,共20页能源化学（英文版）

基　　金：the financial support from the Brazilian funding agencies CNPq(310544/2019-0);FAPESP(2014/02163-7,2017/11958-1&2016/08645-9);FAPEMIG(Financial support for the LMMA/UFVJM Laboratory);CNPq(PQ-2 grant:Process 301095/2018-3);the support from Shell。

摘　　要：We discuss here essential aspects of the experimental supercapacitors characterization by a series of well-known electrochemical methods.We are motivated by a considerable number of publications that misreport procedures and results.Authors often conceal or neglect essential information about the electrochemical analytical apparatus used and its configuration.The lack of such information may lead researchers,especially inexperienced ones,to misunderstand the procedures and results.Eventually,the misled electrochemical equipment configuration favors misinterpretation of data and low reproducibility rates.This paper aims to highlight these issues and clarify them.We explain fundamental concepts of some electrochemical analytical methods,such as cyclic voltammetry,galvanostatic charge-discharge,single potential step chronoamperometry,and electrochemical impedance spectroscopy,focusing on the supercapacitor field.Distinct configurations of electrical parameters are presented and discussed to highlight the effects of incorrect setup and uncover misleading results.We discuss how the electrochemical setup and data analyses matter in reliable data results for the supercapacitor.

关 键 词：SUPERCAPACITOR Electrochemical instrumentation Electrochemical methods ELECTROCHEMISTRY 

分 类 号：TM53[电气工程—电器]