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Effect of N/P ratios on the performance of LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite lithium-ion batteries
Chen, Zhan1,2; Zhang, Lan2; Wu, Xiangkun2; Song, Kaifang2; Ren, Baozeng1; Li, Tao1; Zhang, Suojiang2
2019-11-01
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume439Pages:7
AbstractSilicon is considered as a promising anode material to improve the energy density of lithium ion batteries. However, the huge capacity loss in the initial cycles not only consumes the active Li from the cathode, but also shows great influence on the long-term cycle stability for the varied negative/positive capacity ratio (N/P ratio) that may lead to over-charge/discharge, thus hinders silicon from commercial application. Therefore, it's of vital importance to study the N/P ratio to realize the tradeoff between initial coulombic efficiency (ICE) and cycling stability. LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite pouch cells with different N/P ratios between 0.85 and 1.8 are designed and prepared in this paper, electrochemical tests prove that a N/P ratio close to unity provide the best balance between energy density and cycle performance. Moreover, capacity decay mechanisms in cathode and anode are carefully studied, which demonstrates that up to 90% of the capacity loss is due to the active Li host sites loss in anode, while the crosstalk between the two electrodes also must be considered.
KeywordLithium ion battery Negative/positive capacity ratio Initial coulombic efficiency Cycling stability SiOx/C anode
DOI10.1016/j.jpowsour.2019.227056
Language英语
WOS KeywordTRANSITION-METAL DISSOLUTION ; HIGH-ENERGY ; NI-RICH ; ELECTROCHEMICAL PERFORMANCE ; NEGATIVE ELECTRODE ; SILICON ANODE ; LI ; PRELITHIATION ; CATHODE ; NANOPARTICLES
Funding ProjectNational Key Research and Development Program of China[2016YFB0100303] ; National Natural Science Foundation of China[21706262] ; Beijing Natural Science Foundation[L172045] ; Ford-China University Research Program
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Ford-China University Research Program
WOS IDWOS:000494891700004
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39092
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Tao; Zhang, Suojiang
Affiliation1.Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zhan,Zhang, Lan,Wu, Xiangkun,et al. Effect of N/P ratios on the performance of LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite lithium-ion batteries[J]. JOURNAL OF POWER SOURCES,2019,439:7.
APA Chen, Zhan.,Zhang, Lan.,Wu, Xiangkun.,Song, Kaifang.,Ren, Baozeng.,...&Zhang, Suojiang.(2019).Effect of N/P ratios on the performance of LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite lithium-ion batteries.JOURNAL OF POWER SOURCES,439,7.
MLA Chen, Zhan,et al."Effect of N/P ratios on the performance of LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite lithium-ion batteries".JOURNAL OF POWER SOURCES 439(2019):7.
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