Hybrid Supercapacitors Based on Intercalation Compounds as Positive Electrodes

作者：Wen Zubiao; Tian Shu; Qu Quoting; Wu Yuping^*

来源：Progress in Chemistry, 2011, 23(2-3): 589-594.

• hybrid supercapacitors
• electrolytes
• electrode materials
• activated carbon
• oxides
• intercalation compounds

In this paper a short introduction to the latest development on hybrid supercapacitors based on intercalation compounds is presented, and the up-to-date research results of our laboratory on the influence of aqueous electrolytes, electrode materials (activated carbons, MnO2, V2O5, LiCoO2, LiMn2O4, NaxMnO2 and KxMnO2) and some supercapacitors are mainly expounded. It should be noted that the hybrid supercapacitors based on intercalation compounds containing alkali metal elements presents great promise for applications due to the following reasons; (1) the electrolytes are different from those of other supercapacitors and they do not need to provide anions and cations for positive and negative electrodes, (2) the electrode materials have high capacitance, high power density and excellent cycling behavior. For example, in the case of amorphous nano MnO2, after 23 000 full cycles, the capacitance retention is above 94%. As to the hybrid supercapacitor of AC//LiMn2O4 nanorod, its energy density based on the active electrode materials can be above 50Wh/kg with excellent power characteristics. Finally, some future directions are pointed out especially some non-carbon based negative electrode materials with capacitive and redox behaviors.

• 出版日期2011-3
• 单位复旦大学; 江西师范大学