中南大学学报（自然科学版）2011，Vol.42Issue(8)：2245-2251,7.
无水层状钠锰氧正极材料的合成及其锂离子嵌入性能
Preparation and electrochemical Li intercalation performances of anhydrous layered sodium manganese oxides cathode materials
摘要
Abstract
Anhydrous layered sodium manganese oxides were synthesized by acetate sol-gel method and glycolic acid sol-gel method, respectively. The structure and performance of as-prepared materials were characterized by thermogravimetric analysis (TG), inductively coupled plasma (ICP), X-ray diffractometer (XRD), scanning electron microscope (SEM), galvanostatic charge/discharge and cyclic voltammetry (CV). The results show that the sample a-Na0.65MnO2.13 synthesized by glycolic acid sol-gel method has much better electrochemical performances than that of a-Na0.67MnO2.26 prepared by acetate sol-gel method. Besides, a-Na0.65MnO2.13 exhibits the second discharge capacity of 182 mA-h/g at a current density of 25 mA/g in the cutoff voltage of 2.0-4.3 V, and the capacity retention after 40th cycle is close to 90.6%.关键词
锂离子电池/层状正极材料/钠锰氧化物/比容量Key words
lithium-ion battery/ layered cathode material/ sodium manganese oxides/ specific capacity分类
化学化工引用本文复制引用
杨顺毅,王先友,刘子玲,杨秀康,刘黎,王雁生,王国宝..无水层状钠锰氧正极材料的合成及其锂离子嵌入性能[J].中南大学学报（自然科学版）,2011,42(8):2245-2251,7.基金项目
湖南省研究生科研创新项目(CX2009B132) （CX2009B132）
科技部科技计划项目(2009GJD20021) （2009GJD20021）
湖南省科技厅重点项目(2009WK2007) （2009WK2007）
湖南省自然科学市州联合基金重点项目(09JJ8001) （09JJ8001）
