دورية أكاديمية
Trimethoxyboroxine as an electrolyte additive to enhance the 4.5 V cycling performance of a Ni-rich layered oxide cathode
| العنوان: | Trimethoxyboroxine as an electrolyte additive to enhance the 4.5 V cycling performance of a Ni-rich layered oxide cathode |
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| المؤلفون: | Wei Gu, Guoyong Xue, Qingyu Dong, Ruowei Yi, Yayun Mao, Lei Zheng, Haikuo Zhang, Xiulin Fan, Yanbin Shen, Liwei Chen |
| المصدر: | eScience, Vol 2, Iss 5, Pp 486-493 (2022) |
| بيانات النشر: | KeAi Communications Co. Ltd., 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Mechanical engineering and machinery LCC:Electronics |
| مصطلحات موضوعية: | Ni-rich layered oxides, Lithium-ion batteries, Interface analysis, Electrolyte additives, Cathode electrolyte interphase, Mechanical engineering and machinery, TJ1-1570, Electronics, TK7800-8360 |
| الوصف: | Ni-rich layered oxides are attractive cathode materials for advanced lithium-ion batteries (LIBs) due to their high energy density. However, their large-scale application is seriously hindered by their interfacial instability, especially at a high cut-off potential. Here, we demonstrate that trimethoxyboroxine (TMOBX) is an effective film-forming additive to address the interfacial instability of LiNi0.8Co0.1Mn0.1O2 (NCM811) material at a high cut-off voltage of 4.5 V. We find that TMOBX decomposes before carbonate solvent and forms a thin cathode electrolyte interphase (CEI) layer on the surface of the NCM811 material. This TMOBX-formed CEI significantly suppresses electrolyte decomposition at a high potential and inhibits the dissolution of transition metals from NCM811 during cycling. In addition, electron-deficient borate compounds coordinate with anions (PF6−, F−, etc.) and H2O in the battery, further improving the battery's stability. As a result, adding 1.0 wt% of TMOBX boosts the capacity retention of a Li||NCM811 cell from 68.72% to 86.60% after 200 cycles at 0.5C in the range of 2.8–4.5 V. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2667-1417 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S2667141722000611Test; https://doaj.org/toc/2667-1417Test |
| DOI: | 10.1016/j.esci.2022.05.003 |
| الوصول الحر: | https://doaj.org/article/ba3e5efdb2504499aa260eb5b90882c8Test |
| رقم الانضمام: | edsdoj.ba3e5efdb2504499aa260eb5b90882c8 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26671417 |
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| DOI: | 10.1016/j.esci.2022.05.003 |