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Enhanced high-temperature performance and thermal stability of lithium-rich cathode via combining full concentration gradient design with surface spinel modification
Hu, Naifang1,2,3; Zhang, Chi3,4; Song, Kaifang1,2,3; Wu, Hui1; Yang, Puheng5; Zhang, Lan1,2,3
2021-07-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume415Pages:9
AbstractLithium-rich layered oxides (LLOs) are considered as the most promising candidate for the cathode of high energy density lithium-ion batteries. However, the poor cycle stability especially under high temperature is hindering its practical applications. Herein, a full concentration gradient LLO with spinel modification is designed and prepared. This synergistic strategy not only makes full use of high Ni content that improving the discharge voltage but also mitigates the detrimental influence of surface residual alkalis. The surface spinel modified cathode exhibits a higher initial coulombic efficiency of 87.52% with enhanced cycle stability at 55 ?C (191.5mAh/g after 200 cycles at 1C), the average discharge voltage drop is also alleviated to 3.17 mV per cycle (at 55 ?C). Furthermore, it also shows enhanced thermal stability, in which the exothermic onset temperature rises from 265.380 to 295.221 ?C, and the thermal release decreases from 211.525 to 181.181 J/g. This work proposes an integrated strategy to enhance the comprehensive performance of LLOs, thus shed a light on the way for its practical application.
KeywordLithium-ion battery Full concentration gradient lithium-rich layered oxides Surface spinel modification High-temperature performance Thermal stability
DOI10.1016/j.cej.2021.129042
Language英语
WOS KeywordLAYERED OXIDE CATHODES ; LI-ION BATTERY ; ELECTROCHEMICAL PERFORMANCE ; HIGH-CAPACITY ; LONG-LIFE ; CHALLENGES ; CONVERSION ; MN
Funding ProjectNational Key Research and Development Program of China[2019YFA0705600] ; National Natural Science Foundation of China[21706261] ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China[21921005] ; Hebei Natural Science Foundation[B2020103028]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China ; Hebei Natural Science Foundation
WOS IDWOS:000647729600006
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48696
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Lan
Affiliation1.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ionic Liquids Clean Proc, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Lang Fang Inst Proc Engn, Langfang 065001, Hebei, Peoples R China
4.Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Peoples R China
5.Beijing Univ Aeronaut & Astronaut, Sch Phys, Beijing 100191, Peoples R China
Recommended Citation
GB/T 7714
Hu, Naifang,Zhang, Chi,Song, Kaifang,et al. Enhanced high-temperature performance and thermal stability of lithium-rich cathode via combining full concentration gradient design with surface spinel modification[J]. CHEMICAL ENGINEERING JOURNAL,2021,415:9.
APA Hu, Naifang,Zhang, Chi,Song, Kaifang,Wu, Hui,Yang, Puheng,&Zhang, Lan.(2021).Enhanced high-temperature performance and thermal stability of lithium-rich cathode via combining full concentration gradient design with surface spinel modification.CHEMICAL ENGINEERING JOURNAL,415,9.
MLA Hu, Naifang,et al."Enhanced high-temperature performance and thermal stability of lithium-rich cathode via combining full concentration gradient design with surface spinel modification".CHEMICAL ENGINEERING JOURNAL 415(2021):9.
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