Understanding the charging of supercapacitors by electrochemical quartz crystal microbalance  

作　　者：Liang Niu Long Yang Jingjing Yang Ming Chen Liang Zeng Pan Duan Taizheng Wu Emmanuel Pameté Volker Presser Guang Feng 

机构地区：[1]State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science and Technology(HUST),430074 Wuhan,China. [2]INM–Leibniz Institute for New Materials,Campus D22,66123,Saarbrücken,Germany [3]Saarland University,Campus D22,66123,Saarbrücken,Germany [4]Saarene–Saarland Center for Energy Materials and Sustainability,Campus C42,66123,Saarbrücken,Germany

出　　处：《Industrial Chemistry & Materials》2023年第2期175-187,共13页工业化学与材料（英文）

基　　金：the funding support from the National Natural Science Foundation of China(52161135104 and 52106090);Hubei Provincial Natural Science Foundation of China(2020CFA093)as well as the Program for HUST Academic Frontier Youth Team;M.C.also thanks to the Postdoctoral Creative Research Funding of Hubei Province.The INM authors thank Eduard Arzt(INM)for his continued support.

摘　　要：Supercapacitors are highly valued energy storage devices with high power density,fast charging ability,and exceptional cycling stability.A profound understanding of their charging mechanisms is crucial for continuous performance enhancement.Electrochemical quartz crystal microbalance(EQCM),a detection means that provides in situ mass change information during charging–discharging processes at the nanogram level,has received greatly significant attention during the past decade due to its high sensitivity,non-destructiveness and low cost.Since being used to track ionic fluxes in porous carbons in 2009,EQCM has played a pivotal role in understanding the charging mechanisms of supercapacitors.Herein,we review the critical progress of EQCM hitherto,including theory fundamentals and applications in supercapacitors.Finally,we discuss the fundamental effects of ion desolvation and transport on the performance of supercapacitors.The advantages and defects of applying EQCM in supercapacitors are thoroughly examined,and future directions are proposed.

关 键 词：EQCM SUPERCAPACITORS Charging mechanisms Quantitative characterization. 

分 类 号：O64[理学—物理化学]