Hybrid supercapacitor based on MnO2 and columned FeOOH using Li2SO4 electrolyte solution

作者：Jin Wei Hong^*; Cao Gen Ting; Sun Jing Ya

来源：Journal of Power Sources, 2008, 175(1): 686-691.

DOI：10.1016/j.jpowsour.2007.08.115

• FeOOH
• MnO2
• hybrid supercapacitor

The nano-sized columned beta-FeOOH was prepared by the hydrolysis process and its electrochemical capacitance performance was evaluated for the first time in Li2SO4 solution. A hybrid supercapacitor based on MnO2 positive electrode and FeOOH negative electrode in Li2SO4 electrolyte solution was designed. The electrochemical tests demonstrated that the hybrid supercapacitor has a energy density of 12 Wh kg(-1) and a power density of 3700 W kg(-1) based on the total weight of the electrode active materials with a voltage range 0-1.85 V. This hybrid supercapacitor also exhibits a good cycling performance and keeps 85% of initial capacity over 2000 cycles.

• 出版日期2008-1-3
• 单位浙江海洋大学