涂布正极表面丝网印刷氧化锌颗粒对锂离子电池性能的影响

doi:10.11896/cldb.21050056

材料导报

2022, Vol. 36

Issue (21): 21050056-5 https://doi.org/10.11896/cldb.21050056

无机非金属及其复合材料

涂布正极表面丝网印刷氧化锌颗粒对锂离子电池性能的影响

鲁春驰, 王影^*, 王东征

上海工程技术大学机械与汽车工程学院,上海 201620

Effect of Screen-printed Zinc Oxide Particles Coated on the Cathode Surface on the Performance of Lithium-ion Batteries

LU Chunchi, WANG Ying^*, WANG Dongzheng

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

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摘要已有研究表明对涂布电极进行改性有利于提高锂离子电池的电化学性能。本研究将三元正极材料LiNi_1/3Co_1/3Mn_1/3O₂、导电添加剂、聚偏氟乙烯和N-甲基吡咯烷酮混合,制成均匀浆料,并将浆料涂覆在铝箔集流体上,充分干燥后制成NCM电极。所用氧化锌粉末采用化学沉淀法制备,颗粒直径在100 nm左右。丝网印刷的氧化锌颗粒比较均匀地分散在涂布电极表面,表面改性前后LiNi_1/3Co_1/3Mn_1/3O₂的晶体结构没有发生明显改变,采用改性电极作为正极的电池具有较高的倍率性能和较好的循环性能,随着循环次数增加,改性后的电极电化学极化增加速度明显变缓。研究结果表明,采用简单易行的丝网印刷法在干燥后的电极表面沉积氧化锌颗粒能够有效提高电池的循环性能和倍率性能。

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关键词: LiNi_1/3Co_1/3Mn_1/3O₂(NCM)电极片丝网印刷氧化锌表面改性

Abstract: Previous studies have shown that modifying the doctor-bladed electrodes is beneficial to improve the electrochemical performance of lithium-ion batteries. In this study, the ternary cathode material LiNi_1/3Co_1/3Mn_1/3O₂, conductive additives, polyvinylidene fluoride and N-methylpyrrolidone were mixed into a homogeneous slurry, spread on aluminum foil and dried sufficiently to prepare NCM electrodes. The zinc oxide (ZnO) particles of around 100 nm in diameter were prepared by chemical precipitation method. Screen-printed ZnO particles were well dispersed on the surface of the electrode. The crystal structure of LiNi_1/3Co_1/3Mn_1/3O₂ did not change after the modification. The batteries assembled with the modified electrodes had higher rate capability and better cycling performance. The increasing rate of electrochemical polarization of the modified electrode slow down with the charge-discharge test. The results show that modifying the electrode with ZnO particles by facile screen-printing method can effectively improve the cycling performance and rate performance of the batteries.

Key words: LiNi_1/3Co_1/3Mn_1/3O₂ (NCM) electrode screen printing zinc oxide surface modification

出版日期: 2022-11-10 发布日期: 2022-11-03

ZTFLH:

TM912.9

基金资助: 国家自然科学基金(51575335;51876113);新世纪优秀人才计划(NCET-10-0296);上海市科学技术委员会科研计划项目(16030501300);江苏省湖泊环境遥感技术实验室开放资金(JSLERS-2019-003);上海市薄壁结构数字化制造重点实验室开放项目(2019-002)

通讯作者: * wangyingcae@sues.edu.cn

作者简介: 鲁春驰,2015年9月—2019年6月就读于天津大学仁爱学院机械设计制造及其自动化专业,获得工学学士学位,2019年9月—2022年5月就读于上海工程技术大学车辆工程专业,获工学硕士学位,主要研究方向为新能源动力锂离子电池的正极和负极新材料的实验方法探索与数据分析。
王影,1995年9月—1999年7月就读于安徽工程大学,获工学学士学位,2008年9月—2014年12月硕博连读于电子科技大学材料科学与工程专业,获工学博士学位,期间2012年12月—2013年5月在日本东京工业大学做访问学者,2015年4月至今,在上海工程技术大学机械与汽车工程学院任教,曾参与国家级、省部级项目4项及与企业合作的横向课题多项,近年在国内外学术期刊上发表论文20余篇。

引用本文:

鲁春驰, 王影, 王东征. 涂布正极表面丝网印刷氧化锌颗粒对锂离子电池性能的影响[J]. 材料导报, 2022, 36(21): 21050056-5.
LU Chunchi, WANG Ying, WANG Dongzheng. Effect of Screen-printed Zinc Oxide Particles Coated on the Cathode Surface on the Performance of Lithium-ion Batteries. Materials Reports, 2022, 36(21): 21050056-5.

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http://www.mater-rep.com/CN/10.11896/cldb.21050056 或 http://www.mater-rep.com/CN/Y2022/V36/I21/21050056

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