Enhanced high-temperature performance and thermal stability of lithium-rich cathode via combining full concentration gradient design with surface spinel modification
文献类型：期刊论文
| 作者 | Hu, Naifang2,3,4; Zhang, Chi4,5; Song, Kaifang2,3,4; Wu, Hui2; Yang, Puheng1; Zhang, Lan2,3,4 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021-07-01 |
| 卷号 | 415页码:9 |
| 关键词 | Lithium-ion battery Full concentration gradient lithium-rich layered oxides Surface spinel modification High-temperature performance Thermal stability |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2021.129042 |
| 英文摘要 | Lithium-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. |
| WOS关键词 | LAYERED OXIDE CATHODES ; LI-ION BATTERY ; ELECTROCHEMICAL PERFORMANCE ; HIGH-CAPACITY ; LONG-LIFE ; CHALLENGES ; CONVERSION ; MN |
| 资助项目 | National 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研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000647729600006 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National 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 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/48695]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhang, Lan |
| 作者单位 | 1.Beijing Univ Aeronaut & Astronaut, Sch Phys, Beijing 100191, Peoples R China 2.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 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Lang Fang Inst Proc Engn, Langfang 065001, Hebei, Peoples R China 5.Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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