Revealing the rate-limiting electrode of lithium batteries at high rates and mass loadings
文献类型：期刊论文
| 作者 | Chen, Yongxiu1,2; Key, Julian1,2; O'Regan, Kieran1,2; Song, Tengfei1; Han, Yongsheng3,4; Kendrick, Emma1,2 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2022-12-15 |
| 卷号 | 450页码:11 |
| ISSN号 | 1385-8947 |
| 关键词 | Lithium-ion battery Rate-limiting electrode GITT Thermodynamic limitation Diffusion kinetic Reaction kinetic |
| DOI | 10.1016/j.cej.2022.138275 |
| 英文摘要 | Lithium-ion batteries with superior capacities and rate performance are needed due to the soaring demands for higher energy and power device requirements. However, the main hurdle on achieving this predominately results from the poor rate performance of electrode, which is related to thermodynamic limitations and slow kinetics. To determine the rate-limiting electrode in NMC622 vs graphite cells, a methodology based upon the galvanic intermittent titration technique, for investigating the diffusion and reaction kinetics from the observed over -potential at each electrode has been developed. Variable current densities have been used to simultaneously extract the thermodynamic and kinetic properties of each electrode with increasing mass loading. Graphite is observed to reach its thermodynamic limits quicker than NMC, due to the flat plateaus and overpotentials observed from the charge transfer kinetics and mass transport. At high rates and high mass loadings, the graphite electrode is responsible for limiting both Li+ diffusion and reaction rates in full cells. Slow diffusion kinetics are caused by the transport of the electrolyte in the porous electrode, which limits the availability of Li+ for reaction at the surface of graphite. This methodology is proposed as a fast single technique for comprehensively parameterizing the rate limitations observed in a full cell configuration. |
| WOS关键词 | GALVANOSTATIC INTERMITTENT TITRATION ; GITT ; LITHIATION ; CATHODES ; KINETICS |
| 资助项目 | Faraday Insti-tution[EP/S003053/1] ; Faraday Insti-tution[FIRG003] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000862433800001 |
| 资助机构 | Faraday Insti-tution |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54829]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Chen, Yongxiu; Kendrick, Emma |
| 作者单位 | 1.Univ Birmingham, Sch Met & Mat, Birmingham BT15 2TT, England 2.Faraday Inst, Quad One,Becquerel Ave,Harwell Campus, Didcot OX11 0RA, England 3.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yongxiu,Key, Julian,O'Regan, Kieran,et al. Revealing the rate-limiting electrode of lithium batteries at high rates and mass loadings[J]. CHEMICAL ENGINEERING JOURNAL,2022,450:11. |
| APA | Chen, Yongxiu,Key, Julian,O'Regan, Kieran,Song, Tengfei,Han, Yongsheng,&Kendrick, Emma.(2022).Revealing the rate-limiting electrode of lithium batteries at high rates and mass loadings.CHEMICAL ENGINEERING JOURNAL,450,11. |
| MLA | Chen, Yongxiu,et al."Revealing the rate-limiting electrode of lithium batteries at high rates and mass loadings".CHEMICAL ENGINEERING JOURNAL 450(2022):11. |
入库方式： OAI收割
来源：过程工程研究所
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