CAS OpenIR
Enhancing the overcharged performance of Li(Ni0.8Co0.15Al0.05)O-2 electrodes by CeO2-Al2O3 surface coating
Wang, Pengfei1; Xia, Qing1; Zhou, Yuncheng1,2; Ji, Xueqian1,2; Feng, Hailan1; Xu, Yuxing1; Yang, Jun1,2,3; Tan, Qiangqiang1,2,3
2021-08-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume873Pages:9
AbstractThe 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.
KeywordNickel-rich cathode material Lithium ion battery Overcharge Ball-milling CeO2-Al2O3 coating
DOI10.1016/j.jallcom.2021.159761
Language英语
WOS KeywordX-RAY-DIFFRACTION ; ELECTROCHEMICAL PERFORMANCE ; LINI0.8CO0.15AL0.05O2 ; CATHODE ; OXYGEN ; IMPROVEMENT ; COMPOSITES ; STABILITY ; BATTERIES ; FEPO4
Funding ProjectKey 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 Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationKey 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
WOS IDWOS:000651251000005
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48822
Collection中国科学院过程工程研究所
Corresponding AuthorTan, Qiangqiang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Hebei Technol Innovat Ctr Adv Energy Mat, Langfang 065001, Peoples R China
Recommended Citation
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.
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