Improving LiNi0.9Co0.08Mn0.02O2's cyclic stability via abating mechanical damages

doi:10.1016/j.ensm.2020.02.028

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Improving LiNi0.9Co0.08Mn0.02O2's cyclic stability via abating mechanical damages
	Ren, Zhongmin ; Shen, Cai ; Liu, Meng ; Liu, Jian ; Zhang, Shengqi ; Yang, Gai ; Huai, Liyuan ; Liu, Xiaosong ; Wang, Deyu ; Li, Hong
刊名	ENERGY STORAGE MATERIALS
	2020
卷号	28 页码:1-9
关键词	RICH LAYERED CATHODE NI-RICH ENERGY-DENSITY ION DEGRADATION SURFACE LINI0.8CO0.1MN0.1O2 GENERATION EVOLUTION BATTERY
DOI	10.1016/j.ensm.2020.02.028
英文摘要	The cyclic plummet caused by mechanical-damage-induced particle cracking is one of the key challenges to hinder the practical application of nickel-rich cathodes. Mechanical stress, roughly estimated by.c resulted from variation of O-(Li)-O propelling forces, could be tuned up by partially deflecting oxygen charges. Herein, we propose a strategy to abate the mechanical stress of LiNi0.9Co0.08Mn0.02O2 via adjusting electrons' distribution with appropriate cations substitution. Among the investigated species, Ti- and Al-modifications alleviate the change of lattice c by drawing the neighbor-oxygen charges to transition metal (TM) layers, and Zn-substitution aggrandizes Delta c indicating that pushing effect plays the dominant role. Since it renders the largest reduction of lattice c variation, similar to 40% less in both regions, Ti-substituted sample retains 93.4% of the initial capacity after 200 cycles, even without particle cracking, although the other samples also deliver similar to 220 mAhg(-1) under 0.1 C. Our approaches demonstrate the dependence of mechanical stress on electronic micro-structure, which is viable to develop long-life cathodes for power lithium ion batteries.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20771]
专题	2020专题
作者单位	1.Shen, C 2.Huai, LY 3.Wang, DY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Ren, Zhongmin,Shen, Cai,Liu, Meng,et al. Improving LiNi0.9Co0.08Mn0.02O2's cyclic stability via abating mechanical damages[J]. ENERGY STORAGE MATERIALS,2020,28:1-9.
APA	Ren, Zhongmin.,Shen, Cai.,Liu, Meng.,Liu, Jian.,Zhang, Shengqi.,...&Li, Hong.(2020).Improving LiNi0.9Co0.08Mn0.02O2's cyclic stability via abating mechanical damages.ENERGY STORAGE MATERIALS,28,1-9.
MLA	Ren, Zhongmin,et al."Improving LiNi0.9Co0.08Mn0.02O2's cyclic stability via abating mechanical damages".ENERGY STORAGE MATERIALS 28(2020):1-9.