摘要
采用软化学合成法合成出基面间距为0.70nm的层状二氧化锰(bir-MnO2),并利用表面吸附技术制备了层状二氧化锰/苯胺-邻甲氧基苯胺共聚物复合材料(bir-MnO2/P(An-co-oAs)),借助FTIR、XRD、SEM、TGA、四探针和充放电循环实验等测试手段对样品的结构与性能进行表征。结果表明,P(An-co-oAs)的引入,对复合材料中bir-MnO2的层状结构破坏较小,P(An-co-oAs)通过氢键和静电作用吸附在bir-MnO2的表面。与bir-MnO2相比,复合材料的电导率提高2个数量级。首次放电比容量由bir-MnO2的188mAh/g提高到复合材料的202mAh/g。
Layered manganese oxide （bir-MnO2） with a basal spacing of 0.7nm was synthesized by soft chemistry synthesis method. The layered manganese oxide/poly（aniline-co-o-anisidine） composites were prepared by surface adsorption technique, and were characterized by FTIR, XRD, SEM, TGA, four-probe instrument and electrochemical measurement. The results show that the intercalation of P（An-co-oAs） has less effect on the layered structure of bir-MnO2. P（An-co-oAs） is adsorbed on surface of bir-MnO2 via the hydrogen bond and electrostatic action. The electrical conductivity of composites is by 2 orders of magnitude higher than that of birMnO2. The first discharge capacity is improved from 188mAh/g of bir-MnO2 to 202mAh/g of composite.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2006年第12期1906-1909,共4页
Journal of Functional Materials
基金
国家自然科学基金重点资助项目(20236020)
上海市基础研究重大资助项目(04DZ14002)
关键词
锂离子电池
层状二氧化锰
导电聚合物
表面吸附
lithium-ion battery
layered manganese oxide
conducting polymer
surface adsorption
