| V_2O_5/C电化学电容器有机电解液的性能研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 王虹 唐致远 李中延 庄新国 |
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| 作者单位： | 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 |
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| 基金项目： | 广东省教育部产学研资助项目 |
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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%.
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| 关 键 词： | 电化学电容器 金属氧化物 V2O5 混合电容器 |
| 收稿时间： | 2008-05-28 |
Property of Organic Electrolyte in V_2O_5/C Electrochemical Capacitor |
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| WANG Hong,TANG Zhi-yuan,LI Zhong-yan,ZHUANG Xin-guo.Property of Organic Electrolyte in V_2O_5/C Electrochemical Capacitor[J].Electrochemistry,2008,14(2):125. |
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| Authors: | WANG Hong TANG Zhi-yuan LI Zhong-yan ZHUANG Xin-guo |
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| Affiliation: | WANG Hong1,TANG Zhi-yuan1,LI Zhong-yan2,ZHUANG Xin-guo2(1.School of Chemical Engineering , Technology,Tianjin University,Tianjin 300072,China,2.McNair Technology Co.,Ltd.,Dongguan 523800,Guangdong,China) |
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| 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 resist... |
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| Keywords: | electrochemical capacitor metal oxide V2O5 compound capacitor |
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