硅酸盐学报2017，Vol.45Issue(7)：898-903,6.DOI:10.14062/j.issn.0454-5648.2017.07.02
控制还原法制备高性能MnO@Ni锂离子电池负极材料
Reduction-controlled Synthesis of High-performance MnO@Ni Anode Materials for Li-ion Batteries
摘要
Abstract
Nickel and manganese carbonate precursors were synthesized by a co-precipitation route with nickel acetate and manganese acetate as raw materials and sodium bicarbonate as a precipitant. Via controlled reduction of the precursors, the spherical MnO@Ni composite anode materials with different Mn/Ni molar ratios were prepared. The crystal structure, morphology and chemical composition as well as electrochemical performance of the samples were characterized. The results show that modification of impregnating metallic Ni in MnO materials can effectively improve the electrochemical performance of MnO anode materials for lithium ion batteries. The composite anode material with Mn/Ni molar ratio of 1:10 exhibits a superior performance: rate capability of 214.3 mA·h/gat 5C and capacity retention after 200 cycles at 0.5C of 72%.关键词
锂离子电池/共沉淀/控制还原/制备/一氧化锰/电化学性能Key words
lithium-ion battery/co-precipitation/controlled reduction/synthesis/manganese monoxide/electrochemical property分类
动力与电气工程引用本文复制引用
孙永辉,高强,范小明,田院,杨则恒,张卫新..控制还原法制备高性能MnO@Ni锂离子电池负极材料[J].硅酸盐学报,2017,45(7):898-903,6.基金项目
国家自然科学基金项目(21271058,91534102) （21271058,91534102）
安徽省科技攻关项目(1501021013). （1501021013）
