多级柏叶状Cu_2O/Cu负极的制备及其锂电性能  

Preparation and Electrochemical Performances of Hierarchical Cypress-like Cu_2O/Cu for Lithium Ion Battery Anode

作　　者：刘松[1] 侯宏英[1] 刘显茜[2] 段继祥[1] 姚远[1] 廖启书 李栋栋[1] 余成义[1] 代志鹏[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]昆明理工大学机电工程学院,昆明650093

出　　处：《硅酸盐学报》2017年第7期893-897,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51363011);教育部第46批留学归国科研启动基金项目(6488-20130039);云南省高层次引进人才工作经费项目(10978125);云南省人才培养项目(14118425);昆明理工大学重点学科建设项目(14078232);昆明理工大学学科方向团队经费资助项目(14078311)

摘　　要：通过电沉积及后续热氧化法制备了多级柏叶状Cu_2O/Cu锂离子电池负极材料,利用X射线衍射仪、扫描电子显微镜和能谱仪对制备的样品进行了表征,并研究了其电化学性能。结果表明:铜箔表面被均匀覆盖了一层疏松的多级柏叶状Cu_2O颗粒,粒径约为50~200 nm;经过100次充/放电循环后,多级柏叶状Cu_2O/Cu负极的可逆放电比容量仍高达297.2 mA·h/g。Hierarchical cypress-like Cu2O/Cu anode for lithium ion battery was synthesized via facile electro-deposition and subsequent thermal oxidation in air at 200 ℃. The as-prepared samples were characterized by X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer, respectively, and the corresponding electrochemical performances were further investigated. The results show that Cu foil is uniformly coated by one layer of porous cypress-like Cu2O with the particle size of 50 –200 nm, and the reversible discharge capacity of the hierarchical cypress-like Cu2O/Cu anode is 297.2 mA·h/g after 100 cycles.

关 键 词：氧化亚铜 多级柏叶状结构 负极材料 锂离子电池 

分 类 号：O539[理学—等离子体物理]