一种优异循环稳定性和倍率性能多孔Co_(3)O_(4)微米棒的制备  

The Preparation of a Porous Co_(3)O_(4) Micron Rod with Excellent Cycling Stability and Rate Performance

作　　者：朱国振 周川敬 张依瑶 刘晓威 周炳华 ZHU Guozhen;ZHOU Chuanjing;ZHANG Yiyao;LIU Xiaowei;ZHOU Binghua(School of Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China)

机构地区：[1]江西师范大学化学工程学院,江西南昌330022

出　　处：《江西师范大学学报(自然科学版)》2024年第6期567-571,共5页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(22263006)资助项目.

摘　　要：Co_(3)O_(4)因其具有较高的理论比容量、较低的制备成本等优点而被认为是一种理想的锂离子电池负极材料.然而,其在循环过程中体积变化大,这限制了其实际应用.该文通过简易的溶剂热法制备多孔Co_(3)O_(4)微米棒,该微米棒是由大量多孔Co_(3)O_(4)纳米片组装而成,具有较好的循环稳定性和优异的倍率性能,循环500圈后可逆比容量为495 mA·h·g^(-1),库仑效率高达99%,在10.00 C电流密度下平均可逆比容量高达364 mA·h·g^(-1).Co_(3)O_(4) is considered an ideal anode material for lithium-ion batteries due to its high theoretical specific capacity,low cost and easy preparation.However,its practical applications are greatly limited by the large volume expansion during cycling process.The porous Co_(3)O_(4) micron rod is synthesized by the simple solvothermal method,which is assembled from a large number of porous Co_(3)O_(4) nanosheets.Thanks to its unique one-dimensional porous nano micron structure,the porous Co_(3)O_(4) micron rod exhibits a long cycling stability and an excellent rate perfor-mance,the reversible specific capacity of 495 mA·h·g^(-1) is obtained after 500 cycles,and the coulomb efficiency of 99% is maintained,and the average reversible specific capacity of 364 mA·h·g^(-1) is achieved at 10.00 C.

关 键 词：Co_(3)O_(4)纳米片 多孔微米棒 循环稳定性 倍率性能 

分 类 号：O643.32[理学—物理化学]