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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. shu

Capacitance Property of Co-Al Double Hydroxide After Hydrothermal Treatment

LIU Xian-Ming ,
ZHANG Xiao-Gang ^,

1.
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046

Corresponding author: ZHANG Xiao-Gang,
Received Date: 16 July 2002
Available Online: 6 March 2003
Fund Project: 国家自然科学基金资助项目(50143023) (50143023)

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.
- Co-Al layered double hydroxide,
- supercapacitor,
- hydrothermal treatment,
- specific capacitance
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