Preparation and Electrochemical Characteristics of Three-dimensional Manganese Oxide Micro-supercapacitor Electrode
- Received Date: 2011-11-14
- Micro-supercapacitor, Micro electro mechanical system, Three-dimensional electrode, Manganese oxide
Abstract: In order to increase the electrode surface area and enhance the charge storage capacity, we study the micro electro mechanical system technology to fabricate three-dimensional high aspect ratio micro-electrode structure based on glass. The anodic constant potential method is employed to deposit manganese oxide as electroactive substances on the micro-electrode surface. Cyclic voltammetry and constant current charge-discharge method are both used to prepare electrode electrochemical performance testing, with a two-dimensional electrode without structure for comparison. Experimental results show that three-dimensional elec-trode structure can effectively enhance the charge storage capacity. At 1.0 mA/cm2 charge-discharge density, the three-dimensional electrode shows a capacitance of 17.88 mF/cm2, seven times higher than the two-dimensional electrode.
|Citation:||Chun-ming Wen, Zhi-yu Wen, Zheng You, Xiao-feng Wang. Preparation and Electrochemical Characteristics of Three-dimensional Manganese Oxide Micro-supercapacitor Electrode[J]. Chinese Journal of Chemical Physics , 2012, 25(2): 209-213. doi: 10.1088/1674-0068/25/02/209-213|