Effect of N/P ratios on the performance of LiNi0.8Co0.15Al0.05O2 parallel to SiOx/Graphite lithium-ion batteries
文献类型：期刊论文
| 作者 | Chen, Zhan1,2; Zhang, Lan2; Wu, Xiangkun2; Song, Kaifang2; Ren, Baozeng1; Li, Tao1; Zhang, Suojiang2 |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 439页码:7 |
| 关键词 | Lithium ion battery Negative/positive capacity ratio Initial coulombic efficiency Cycling stability SiOx/C anode |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2019.227056 |
| 英文摘要 | Silicon 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. |
| WOS关键词 | TRANSITION-METAL DISSOLUTION ; HIGH-ENERGY ; NI-RICH ; ELECTROCHEMICAL PERFORMANCE ; NEGATIVE ELECTRODE ; SILICON ANODE ; LI ; PRELITHIATION ; CATHODE ; NANOPARTICLES |
| 资助项目 | National 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研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000494891700004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Ford-China University Research Program |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/39091]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Tao; Zhang, Suojiang |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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