典型文献
Analysis of 3.4 Ah lithium-sulfur pouch cells by electrochemical impedance spectroscopy
文献摘要：
Despite great progress in lithium-sulfur(Li-S)batteries,the electrochemical reactions in the cell are not yet fully understood.Electrode processes,complex interfaces and internal resistance may be character-ized by electrochemical impedance spectroscopy(EIS).EIS is a non-destructive technique and easy to apply,though there are challenges in ensuring the reproducibility of measurements and the interpreta-tion of impedance data.Here,we present the impedance behavior of a 3.4 Ah Li-S pouch cell character-ized by EIS.The impedance changes were analyzed over the entire depth-of-discharge,depth-of-charge,and at various temperatures.Based on the formation of intermediates during(dis)charging,the changes of resistances are observed.Overall,the increase in temperature causes a decrease in electrolyte viscosity,lowering the surface energy which can improve the penetration of the electrolyte into the electrode pores.Moreover,the effect of superimposed AC current during EIS measurement was analyzed,and the results show the dependence of the charge transfer resistance on superimposed AC current which was lower compared to steady-state conditions and consents with theory.
文献关键词：
中图分类号：
作者姓名：
Dominika Capkova;Vaclav Knap;Andrea Strakova Fedorkova;Daniel-Ioan Stroe
作者机构：
Department of Physical Chemistry,Pavol Jozef Safarik University in Kosice,Kosice 041 54,Slovak Republic;Faculty of Electrical Engineering,Czech Technical University in Prague,Prague 166 27,Czech Republic;Department of Energy Technology,Aalborg University,Aalborg East 9220,Denmark
文献出处：
引用格式：
[1]Dominika Capkova;Vaclav Knap;Andrea Strakova Fedorkova;Daniel-Ioan Stroe-.Analysis of 3.4 Ah lithium-sulfur pouch cells by electrochemical impedance spectroscopy)[J].能源化学,2022(09):318-325
A类：
consents
B类：
Analysis,Ah,lithium,sulfur,pouch,cells,by,electrochemical,impedance,spectroscopy,Despite,great,progress,Li,batteries,reactions,not,yet,fully,understood,Electrode,processes,complex,interfaces,internal,may,character,ized,EIS,destructive,technique,easy,apply,though,there,challenges,ensuring,reproducibility,measurements,interpreta,data,Here,present,behavior,changes,were,analyzed,entire,depth,discharge,various,temperatures,Based,formation,intermediates,during,charging,resistances,observed,Overall,increase,causes,decrease,electrolyte,viscosity,lowering,surface,energy,which,can,improve,penetration,into,electrode,pores,Moreover,effect,superimposed,AC,current,was,results,show,dependence,transfer,compared,steady,state,conditions,theory
AB值：
0.570231
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