Effects of deposition temperatures on the nanoflakes Co(OH)2 porous films for supercapacitors
Nanoflakes Co(OH)2 porous films were successfully synthesized by a facile electrochemical technique.The morphology was characterized by field emission scanning electron microscopy (FESEM).Electrochemical techniques such as cyclic voltammetry (CV),galvanostaitc charge/discharge and electrochemical impedance spectroscopy were used to study the effects of deposition temperatures on the capacitance of the films.The results exhibited that the Co(OH)2 films single electrode had high specific capacitance in KOH electrolyte.A maximum specific capacitance of 2780 F/g could be achieved for the Co(OH)2 film deposited at 50 ℃ in 2 M aqueous KOH with 0 to 0.4V potential at a charge-discharge current density of 4 mA/cm2.Therefore,the obtained nanoflakes Co(OH)2 porous films can be a potential application electrode material for supercapacitors.
Co(OH)2 film Deposition temperature Specific capacitance Supercapacitor
Zhanjun Yu Binbin Wang Rongbao liao Yumin Cui
College of Chemistry and Chemical Engineering,Fuyang Teachers College,Anhui,Fuyang 236041,China
国际会议
大理
英文
214-218
2011-08-18（万方平台首次上网日期，不代表论文的发表时间）