快速制备尖晶石型锰酸锂正极材料LiCu_(x)Mn_(2-x)O_(4)  

Fast Preparation of Spinel LiCu_(x)Mn_(2-x)O_(4) Cathodes for Lithium-ion Batteries

作　　者：郝佳宾 聂国昌 高洪成 曼茂立 王泽明 谢慕 HAO Jia-bin;NIE Guo-chang;GAO Hong-cheng*;MAN Mao-li;WANG Ze-ming;XIE Mu(Hebei Petroleum University of Technology,Chengde 067000,Hebei,China;Hebei Green Meadow New Energy Co.,Ltd.,Chengde 067000,Hebei,China;Hebei Tourism Vocational College,Chengde 067000,Hebei,China)

机构地区：[1]河北石油职业技术大学,河北承德067000 [2]河北绿草地新能源股份有限公司,河北承德067000 [3]河北旅游职业学院,河北承德067000

出　　处：《河北石油职业技术大学学报》2025年第1期45-48,共4页JOURNAL OF HEBEI PETROLEUM UNIVERSITY OF TECHNOLOGY

基　　金：河北省高等学校科学技术研究项目(高倍率锂离子电池正极材料锰酸锂的制备及其电化学性能研究):QN2023068。

摘　　要：采用燃烧法制备锂离子电池正极材料Cu掺杂型尖晶石型LiCu_(x)Mn_(2-x)O_(4)(x=0、0.01~0.09)。通过XRD检测分析其晶相组成,产物均为尖晶石LiMn_(2)O_(4)晶相,无杂质产生;扫描电镜SEM观察到产物LiCu_(0.05)Mn_(1.95)O_(4)晶体具有明显的八面体形貌,说明二次焙烧处理有利于晶体的发育及材料结晶度的提高;对电池进行恒流充放电性能测试,得到适当含量的掺杂改性后,电池的电化学循环性能得到改善;LiCu_(0.05)Mn_(1.95)O_(4)电极材料经过200次循环后容量仍保留其初始容量的92.9%。结果表明,经过Cu掺杂的尖晶石型LiMn_(2)O_(4)材料有效提高了可充电式锂离子电池的结构稳定性、循环可逆性及电化学性能。Cu-doped spinel LiCu_(x)Mn_(2-x)O_(4)(x=0,0.01~0.09)as cathode material of lithium-ion batteries is prepared by a combustion method.The XRD results show that the products are all spinel LiMn_(2)O_(4) crystal phase without impurities;SEM test observes that the product LiCu_(0.05)Mn_(1.95)O_(4) crystal has obvious octahedron morphology,indicating that the recalcination treatment is beneficial to crystal growth.The Galvano statical charge-discharge tests are carried out,and the results show that the LiCu_(0.05)Mn_(1.95)O_(4) electrode has a 92.9%capacity retention of its initial capacity after 200 cycles.The results indicate that the Cu-doped spinel LiMn_(2)O_(4) material effectively improves the structural stability,cyclic reversibility,and electrochemical performance of rechargeable lithium-ion batteries.

关 键 词：锂离子电池 正极材料 LiCu_(x)Mn_(2-x)O_(4) 尖晶石LiMn_(2)O_(4) 

分 类 号：TM912[电气工程—电力电子与电力传动]