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

作　　者：Ming Zhang Qiang Xu Lin Sang Fei Ding Xingjiang Liu 

机构地区：[1]School of Chemical Engineering and Technology,Tianjin University [2]National Key Laboratory of Science and Technology on Power Sources, Tianjin Institute of Power Sources

出　　处：《Chinese Science Bulletin》2014年第24期2973-2979,共7页

基　　金：supported by the National High Technology Research and Development Program of China(2011AA11A255)

摘　　要：A novel composite of monoclinic manganite/multi-walled carbon nanotubes(c-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 c-MnOOH embedded in the porous structure of MWCNTs,the c-MnOOH/MWCNTs composite could have an advantage of high electrocatalytic activities over those of two other kinds of cathode materials(MWCNTs and c-MnOOH/MWCNTs mixture).The results of chargedischarge tests showed that the c-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 c-MnOOH/MWCNTs composite exhibits low charge potential and high discharge capacity.A novel composite of monoclinic manganite/ multi-walled carbon nanotubes （γ-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 γ-MnOOH embedded in the porous structure of MWCNTs, the γ-MnOOH/MWCNTs composite could have an advantage of high electrocatalytic activities over those of two other kinds of cathode materials （MWCNTs and y-MnOOH/MWCNTs mixture）. The results of charge- discharge tests showed that the γ-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 y-MnOOH/MWCNTs composite exhibits low charge potential and high discharge capacity.

关 键 词：碳纳米管复合材料 阴极材料 空气电池 单斜晶系 水锰矿 多壁碳纳米管 电催化活性 锂 

分 类 号：O611.4[理学—无机化学] TM911.41[理学—化学]