Electrochemical Deposition of MnO2 Nanosheets Covered Au Nanothorns on Carbon Fiber as Cathode for Li-O2 Battery

• Main Authors: Tsai, Yu-Lin, 蔡裕林
• Other Authors: Chiu, Hsin-Tien
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/30031259721539264046

碩士 === 國立交通大學 === 應用化學系碩博士班 === 102 === Li-O2 battery has attracted considerable attention owing to its extremely high specific energy density. To advance its performance, MnO2 has been recently employed in Li-O2 battery because of its oxygen catalytic reactivity, high abundance, low cost and environmental friendliness. In this study, electrodes were fabricated via electrochemical deposition to grow MnO2 nanosheets (NSs) on Au nanothorns (NTs) at carbon fiber (CF/Au NTs/MnO2 NSs). As a result, cathode using such step had a capacity of ~3000 mAh g-1 at a current density of 100 mA g-1, and exhibited 20 discharge/charge cycles with a capacity limitation of 1000 mAh g-1 at a current density of 500 mA g-1. Thus, we anticipate that the Li-O2 battery applied as-synthesized electrode could serve as energy storage for future electric vehicles.