V_2O_5/C电化学电容器有机电解液的性能研究

王虹; 唐致远; 李中延; 庄新国

doi:10.61558/2993-074X.1876

电化学 >

2008 , Vol. 14 >Issue 2: 125 - 129

DOI: https://doi.org/10.61558/2993-074X.1876

研究论文

V_2O_5/C电化学电容器有机电解液的性能研究

王虹 ,
唐致远 ,
李中延 ,
庄新国

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天津大学化工学院,天津大学化工学院,迈科科技有限公司,迈科科技有限公司天津300072,天津300072,广东东莞523800,广东东莞523800

收稿日期: 2008-05-28

修回日期: 2008-05-28

网络出版日期: 2008-05-28

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Property of Organic Electrolyte in V_2O_5/C Electrochemical Capacitor

WANG Hong ,
TANG Zhi-yuan ,
LI Zhong-yan ,
ZHUANG Xin-guo

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(1.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;2.McNair Technology Co.,Ltd.,Dongguan 523800,Guangdong,China

Received date: 2008-05-28

Revised date: 2008-05-28

Online published: 2008-05-28

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摘要

以偏钒酸铵为反应原料,采用液相沉淀法制备出不定型V2O5电极材料.以V2O5为正极,石墨为负极,分别选用1.0 mol/L LiClO4/EC+DMC、1.0 mol/L LiPF6/EC+DEC+DMC、1.6 mol/L Et4NBF4/AN 3种有机电解液组成不对称电化学电容器,恒流充放电、循环伏安和交流阻抗等测试该模拟电容器,如以1.0 mol/LLiClO4/EC+DMC作电解液则具有良好的循环性能和较小的阻抗,且在500 mA/g电流密度下比能量达到8.4Wh/kg,充放电效率达98%.

关键词： 电化学电容器; 金属氧化物; V2O5; 混合电容器

本文引用格式

王虹 , 唐致远 , 李中延 , 庄新国 . V_2O_5/C电化学电容器有机电解液的性能研究[J]. 电化学, 2008 , 14(2) : 125 -129 . DOI: 10.61558/2993-074X.1876

Abstract

In this work,the V2O5 cathode and graphite anode were assembled into non-symmetric electrochemical capacitors using 1.0 mol/L LiClO4 /(EC + DMC),1.0 mol/L LiPF6 /(EC + DEC + DMC),and 1.6mol/L Et4NBF4/AN as electrolyte,respectively.Charging and discharging tests,Cyclic Voltammetry and AC impedance methods were used to investigate the performance of the non-symmetric electrochemical capacitors.The results showed that the electrolyte 1.0 mol/L LiClO4/(EC+DMC)displayed better cycling performance and less resistance.At the current density of 500 mA/g,its specific energy reached 8.4 Wh/kg and the charge-discharge efficiency was 98%.

Key words： electrochemical capacitor; metal oxide; V2O5; compound capacitor

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