Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating

doi:10.1016/j.jallcom.2021.159761

	Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating
	Wang, Pengfei 1; Xia, Qing 1; Zhou, Yuncheng 1,3; Ji, Xueqian 1,3; Feng, Hailan 1; Xu, Yuxing 1; Yang, Jun 1,2,3; Tan, Qiangqiang 1,2,3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-08-25
卷号	873 页码:9
关键词	Nickel-rich cathode material Lithium ion battery Overcharge Ball-milling CeO2-Al2O3 coating
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.159761
英文摘要	The nickel-rich cathode materials (LiNi0.8Co0.15Al0.05O2, NCAs) in Lithium ion batteries often suffer from oxygen loss problems under partially overcharged conditions (> 4.3 V), leading to capacity fading and safety problem. Herein, we utilize a facile ball-milling method to coat the NCAs with a shell of cerium aluminum composite oxide (CeO2-Al2O3), which is commonly used as oxygen storage material. Proved by in situ X-ray diffraction results, the coating CeO2-Al2O3 layer is capable to suppress the lattice volume change and irreversible phase transition of NCAs. The CeO2-Al2O3 coating layer can adsorb released oxygen under overcharged conditions and replenish lattice oxygen of NCAs under oxygen-leaned conditions. The protective layer can also prevent dissolution of the transition metals caused by HF attack in electrolytes. As a result, the as prepared electrode presents high specific capacity of 186.4 mA h g(-1) and excellent cycle stability with capacity retention of 94.1% after 300 cycles at a rate of 0.5 C under overcharged conditions (3.0-4.5 V). Coating CeO2-Al2O3 is an efficient strategy to solve capacity fading problem and safety problem caused by partially overcharge, and such strategy shows significant promise for practical applications. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	Key Research and Development Program of Hebei Province[19214407D] ; Natural Science Foundation of Hebei Province[E2019103018] ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2017-A-02] ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2019-A-09]
WOS关键词	X-RAY-DIFFRACTION ; ELECTROCHEMICAL PERFORMANCE ; LINI0.8CO0.15AL0.05O2 ; CATHODE ; OXYGEN ; IMPROVEMENT ; COMPOSITES ; STABILITY ; BATTERIES ; FEPO4
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000651251000005
资助机构	Key Research and Development Program of Hebei Province ; Natural Science Foundation of Hebei Province ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/48821]
专题	中国科学院过程工程研究所
通讯作者	Tan, Qiangqiang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Hebei Technol Innovat Ctr Adv Energy Mat, Langfang 065001, Peoples R China 3.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Pengfei,Xia, Qing,Zhou, Yuncheng,et al. Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,873:9.
APA	Wang, Pengfei.,Xia, Qing.,Zhou, Yuncheng.,Ji, Xueqian.,Feng, Hailan.,...&Tan, Qiangqiang.(2021).Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating.JOURNAL OF ALLOYS AND COMPOUNDS,873,9.
MLA	Wang, Pengfei,et al."Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating".JOURNAL OF ALLOYS AND COMPOUNDS 873(2021):9.