A novel monoclinic manganite/multi-walled carbon nanotubes composite as a cathode material of lithium-air batteries

作者：Zhang Ming; Xu Qiang^*; Sang Lin; Ding Fei; Liu Xingjiang

来源：Chinese Science Bulletin, 2014, 59(24): 2973-2979.

DOI：10.1007/s11434-014-0396-1

• Lithium-air battery
• Hydrothermal method
• Monoclinic manganite
• Multi-walled carbon nanotubes
• Dimethyl sulforxide

A novel composite of monoclinic manganite/multi-walled carbon nanotubes (gamma-MnOOH/MWCNTs) composite as a cathode material of lithium-air batteries was successfully synthesized by a simple one-step hydrothermal method. Owing to the unique three-dimensional network of gamma-MnOOH embedded in the porous structure of MWCNTs, the gamma-MnOOH/MWCNTs composite could have an advantage of high electrocatalytic activities over those of two other kinds of cathode materials (MWCNTs and gamma-MnOOH/MWCNTs mixture). The results of charge-discharge tests showed that the gamma-MnOOH/MWCNTs composite as a cathode material of lithium-air batteries could effectively enhance the catalytic activity for the oxygen evolution reduction (OER) process. The lithium-air battery based on gamma-MnOOH/MWCNTs composite exhibits low charge potential and high discharge capacity.

• 出版日期2014-8
• 单位天津大学; 中国电子科技集团公司第十八研究所