引用本文:
刘献明, 张校刚. 水热处理对Co-Al双氢氧化物电容性能的影响[J]. 应用化学,
2003, 20(6): 524-527.
Citation: LIU Xian-Ming, ZHANG Xiao-Gang. Capacitance Property of Co-Al Double Hydroxide After Hydrothermal Treatment[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 524-527.
Citation: LIU Xian-Ming, ZHANG Xiao-Gang. Capacitance Property of Co-Al Double Hydroxide After Hydrothermal Treatment[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 524-527.
水热处理对Co-Al双氢氧化物电容性能的影响
摘要:
采用化学共沉淀法制备了Co-Al双氢氧化物,XRD测试表明,产物为层状结构,属于六方晶系,部分产物经水热处理后晶化程度增加。电化学测试表明,这2种Co-Al双氢氧化物作为电极材料皆具有典型的电容性能,Co-Al双氢氧化物单电极比容量达到400 F/g。经水热处理后单电极比容量提高了15%,达460 F/g,电极内阻仅有数十毫欧姆。200次循环后水热处理的电极比容量衰减很小。
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关键词:
- Co-Al双氢氧化物
- / 超级电容器
- / 水热法
- / 比容量
English
Capacitance Property of Co-Al Double Hydroxide After Hydrothermal Treatment
Abstract:
Co-Al layered double hydroxides (LDH) were prepared by chemical co-precipitation.Part of them were treated by hydrothermal method at 130℃ for 16 h.The two materials are of layered structure and belong to hexagonal system as characterized by XRD,and the latter becomes further crystallized.Electrochemical measurements show that two Co-AlLDHs as electrode material have typical capacitance property in a 6 mol/LKOH aqueous electrolyte.The specific capacitance of single electrode is 400 F/g and 460 F/g respectively and the latter's impedance is only tens of mΩ.After 200 cycles the latter's capacitance decreases little.
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