| Title | Surface engineering of Li- and Mn-rich layered oxides for superior Li-ion battery |
| Authors | Ma, Lu-Xiang Chen, Tian-Dong Hai, Chun-Xi Dong, Sheng-De He, Xin Xu, Qi Feng, Hang Xin, A. Chen, Ji-Tao Zhou, Yuan |
| Affiliation | Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610000, Peoples R China Qinghai Bldg & Mat Res Co Ltd, Xining 810000, Peoples R China Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| Keywords | CATHODE MATERIALS ELECTROCHEMICAL PERFORMANCE LI1.2NI0.13CO0.13MN0.54O2 LI1.2MN0.54NI0.13CO0.13O2 EVOLUTION CARBON AL2O3 |
| Issue Date | Nov-2022 |
| Publisher | TUNGSTEN |
| Abstract | The Li- and Mn-rich layered oxides (R-LNCM) are considered as promising cathode materials for high-energy density lithium-ion batteries (LIBs). However, the interface side reaction aggravates the voltage and capacity fading between cathode material and electrolyte at high voltage, which severely hinders the practical application of LIBs. Herein, lithium polyacrylate (LiPAA) as the binder and coating agent is applied to suppress the voltage and capacity fading of R-LNCM electrode. The flexible LiPAA layers with high elasticity are capable of impeding cathode cracks on the particle surface via mechanical stress relief. Thus, superior voltage and capacity fading suppression on R-LNCM electrode is finally achieved. As a result, LiPAA-R-LNCM cathode exhibits a remarkable specific capacity of 186 mA.h.g(-1) with similar to 73% retention at 1. after 200 cycles. Further, the corresponding average discharge potential is maintained to similar to 3.1 V with only similar to 0.4 V falling. |
| URI | http://hdl.handle.net/20.500.11897/658051 |
| ISSN | 2661-8028 |
| DOI | 10.1007/s42864-022-00187-w |
| Indexed | ESCI |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ |
