| PVA基碱性聚合物电解质Ni(OH)2/AC超级电容器的电化学性能 |
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| 引用本文： | 孙紫红,袁安保.PVA基碱性聚合物电解质Ni(OH)2/AC超级电容器的电化学性能[J].中国化学工程学报,2009,17(1):150-155. |
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| 作者姓名： | 孙紫红 袁安保 |
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| 作者单位： | Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China |
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| 基金项目： | Supported by Leading Academic Discipline Project of Shanghai Municipal Education Commission (J50102) |
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| 摘 要： | Polyvinyl alcohol(PVA)-sodium polyacrylate(PAAS)-KOH-H2O alkaline polymer electrolyte film with high ionic conductivity was prepared by a solution-casting method.Polymer Ni(OH)2/activated carbon(AC) hybrid supercapacitors with different electrode active material mass ratios(positive to negative) were fabricated using this alkaline polymer electrolyte,nickel hydroxide positive electrodes,and AC negative electrodes.Galvanostatic charge/discharge and electrochemical impedance spectroscopy(EIS) methods were used to study the electrochemical performance of the capacitors,such as charge/discharge specific capacitance,rate charge/discharge ability,and charge/discharge cyclic stability.Experimental results showed that with the decreasing of active material mass ratio m(Ni(OH)2)/m(AC),the charge/discharge specific capacitance increases,but the rate charge/discharge ability and the charge/discharge cyclic stability decrease.
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| 关 键 词： | PVA based alkaline polymer electrolyte Ni(OH)2/AC supercapacitor electrode active material mass ratio electrochemical performance |
| 收稿时间： | 2007-6-21 |
| 修稿时间： | 2007-6-21
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Electrochemical Performance of Nickel Hydroxide/Activated Carbon Supercapacitors Using a Modified Polyvinyl Alcohol Based Alkaline Polymer Electrolyte |
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| SUN Zihong,YUAN Anbao.Electrochemical Performance of Nickel Hydroxide/Activated Carbon Supercapacitors Using a Modified Polyvinyl Alcohol Based Alkaline Polymer Electrolyte[J].Chinese Journal of Chemical Engineering,2009,17(1):150-155. |
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| Authors: | SUN Zihong YUAN Anbao |
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| Affiliation: | Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China |
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| Abstract: | Polyvinyl alcohol (PVA)-sodium polyacrylate (PAAS)-KOH-H2O alkaline polymer electrolyte film with high ionic conductivity was prepared by a solution-casting method. Polymer Ni(OH)2/activated carbon (AC) hybrid supercapacitors with different electrode active material mass ratios (positive to negative) were fabricated using this alkaline polymer electrolyte, nickel hydroxide positive electrodes, and AC negative electrodes. Galvanostatic charge/ discharge and electrochemical impedance spectroscopy (EIS) methods were used to study the electrochemical per-formance of the capacitors, such as charge/discharge specific capacitance, rate charge/discharge ability, and charge/discharge cyclic stability. Experimental results showed that with the decreasing of active material mass ratio m(Ni(OH)2)/m(AC), the charge/discharge specific capacitance increases, but the rate charge/discharge ability and the charge/discharge cyclic stability decrease. |
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| Keywords: | PVA based alkaline polymer electrolyte Ni(OH)2/AC supercapacitor electrode active material mass ratio electrochemical performance |
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