新能源汽车锂电池负极材料的制备与表征  

Preparation and Characterization of Negative Electrode Materialsfor Lithium Batteries in New Energy Vehicles

作　　者：肖灿阳 周为余 王勤 XIAO Canyang;ZHOU Weiyu;WANG Qin(Anhui Automotive Vocational and Technical College,Hefei 230091,China;Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽汽车职业技术学院,安徽合肥230091 [2]安徽理工大学,安徽淮南232001

出　　处：《安阳师范学院学报》2024年第2期89-93,共5页Journal of Anyang Normal University

基　　金：安徽省教育厅质量工程项目“理实一体化教学模式下的《汽车舒适系统检修》课程改革”(项目编号:2021jyxm0436)。

摘　　要：为提升新能源汽车锂电池电极材料的电化学性能,采用喷涂的方法制备氧化锂钴LCO-x、钛酸锂LTO-x和石墨Gra-x(x为碳纳米管CNTs)复合电极材料,对比分析了不同复合电极材料的物相组成、热重曲线、显微形貌和导电性。结果表明,3种复合电极材料在加入CNTs后,都没有改变各自的物相组成,表明加入CNTs后各组分之间也不会发生反应而形成新的化合物。LCO-CNTs和LTO-CNTs复合电极材料在900℃范围内的热失重也保持在5%以内,具有较好的抗高温氧化能力。采用喷涂法制备的LCO-CNTs和LTO-CNTs复合材料的方块电阻明显相对LCO-Al和LTO-Al电极更小,这主要是因为LTO-CNTs和Gra-CNTs复合材料电极的空间结构都为三明治结构,有助于提升电子传输能力而提高导电性。In order to improve the electrochemical performance of lithium battery electrode materials for new energy vehicles,LCO-x,LTO-x,and Gra-x(x=CNTs)composite electrode materials were prepared by spraying.The phase composition,thermogravimetric curves,microstructure,and conductivity of different composite electrode materials were compared and analyzed.The results showed that the three composite electrode materials did not change their respective phase composition after the addition of CNTs,indicating that there was no reaction between the components and the formation of new compounds after the addition of CNTs.The thermal weight loss of LCO-CNTs and LTO-CNTs composite electrode materials remains within 5%within the 900℃range,indicating good resistance to high-temperature oxidation.The square resistance of LCO-CNTs and LTO-CNTs composite materials prepared by spraying method is significantly smaller than that of LCO-Al and LTO-Al electrodes.This is mainly because the spatial structure of LTO-CNTs and Gra-CNTs composite electrode is sandwich structure,which helps to improve electron transfer ability and conductivity.

关 键 词：汽车锂电池 复合电极材料 物相组成 显微形貌 导电性 

分 类 号：TM914.4[电气工程—电力电子与电力传动]