AN ASYMMETRIC ON-CHIP MICRO SUPERCAPACITOR USING NANO MANGNESE DIOXIDE AND ACTIVATED CARBON

摘要：

This paper reports an asymmetric MEMS-based micro supercapacitor, using a nano structured MnO2 anode and an activated carbon (AC) cathode. Electrochemical characterizations of the prototype with K2SO4 electrolyte demonstrate that the micro supercapacitor has well-performed capacitive behavior under various voltage scanning rates and charge/discharge currents. In particular, the asymmetric system expands the working cell voltage from typical 1.0V to 1.5V with aqueous electrolyte. A specific energy of 25.5mJ/cm2 and capacitances of more than 20mF/cm2 are calculated. Moreover, this work provides an attractive approach to achieve various micro energy storage systems on chips.

作者: Caiwei Shen Xiaohong Wang Siwei Li Jiangan Wang Wenfeng Zhang Feiyu Kang

作者单位: Tsinghua National Laboratory for Information Science and Technology Institute of Microelectronics, T Tsinghua National Laboratory for Information Science and Technology Institute of Microelectronics, T Tsinghua National Laboratory for Information Science and Technology Department of Materials Science Tsinghua National Laboratory for Information Science and Technology Department of Materials Science

会议类型: 国际会议

会议名称: The 1st International Conference on Optofluidics 2011(第一届国际光流体大会)

会议地点: 西安

会议语种:英文

页码: 71-72

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）