无定型MnO_2的合成及其电化学性质研究  

The Synthesis and Electrochemical Performance of the Amorphous Manganese Dioxide

作　　者：朱立才[1] 袁中直[1] 李伟善[1] 孙峰[1] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510006

出　　处：《广东化工》2007年第5期17-19,共3页Guangdong Chemical Industry

基　　金：广东省"新型电池"重大专项资助项目(2002A1100304);广东省教育厅自然科学研究项目(Z02022)

摘　　要：在乙醇介质中用恒沸回流法合成纳米颗粒的无定型二氧化锰。无定型二氧化锰首次放电容量为208 mAh.g-1,第五次循环的放电容量为首次的80.6%,即167.6 mAh.g-1。结果表明,无定型二氧化锰具有较好的脱嵌锂性能。The amorphous manganese dioxide was prepared by using reflux methods. The amorphous manganese dioxide was yielded by using ethanol as solvent. It was found that the initial capacity of amorphous manganese dioxide was 208 mAh·g^-1, and it still had a capacity of 167.6 mAh·g^-1 after four charge/discharge cycles. The results showed that amorphous manganese had better characteristic in out/inbed lithium.

关 键 词：无定型二氧化锰 电化学行为 合成 锂离子 容量 

分 类 号：TM912.2[电气工程—电力电子与电力传动]