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Fabricating Heterostructures for Boosting the Structure Stability of Li-Rich Cathodes
[Image: see text] Li-rich Mn-based oxides are regarded as the most promising new-generation cathode materials, but their practical application is greatly hindered by structure collapse and capacity degradation. Herein, a rock salt phase is epitaxially constructed on the surface of Li-rich Mn-based c...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9948178/ https://www.ncbi.nlm.nih.gov/pubmed/36844563 http://dx.doi.org/10.1021/acsomega.2c07313 |
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author | Li, Yao Zhao, Qing Zhang, Mengke Qiu, Lang Zheng, Zhuo Liu, Yang Sun, Yan Zhong, Benhe Song, Yang Guo, Xiaodong |
author_facet | Li, Yao Zhao, Qing Zhang, Mengke Qiu, Lang Zheng, Zhuo Liu, Yang Sun, Yan Zhong, Benhe Song, Yang Guo, Xiaodong |
author_sort | Li, Yao |
collection | PubMed |
description | [Image: see text] Li-rich Mn-based oxides are regarded as the most promising new-generation cathode materials, but their practical application is greatly hindered by structure collapse and capacity degradation. Herein, a rock salt phase is epitaxially constructed on the surface of Li-rich Mn-based cathodes through Mo doping to improve their structural stability. The heterogeneous structure composed of a rock salt phase and layered phase is induced by Mo(6+) enriched on the particle surface, and the strong Mo–O bonding can enhance the TM–O covalence. Therefore, it can stabilize lattice oxygen and inhibit the side reaction of the interface and structural phase transition. The discharge capacity of 2% Mo-doped samples (Mo 2%) displays 279.67 mA h g(–1) at 0.1 C (vs 254.39 mA h g(–1) (pristine)), and the discharge capacity retention rate of Mo 2% is 79.4% after 300 cycles at 5 C (vs 47.6% (pristine)). |
format | Online Article Text |
id | pubmed-9948178 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-99481782023-02-24 Fabricating Heterostructures for Boosting the Structure Stability of Li-Rich Cathodes Li, Yao Zhao, Qing Zhang, Mengke Qiu, Lang Zheng, Zhuo Liu, Yang Sun, Yan Zhong, Benhe Song, Yang Guo, Xiaodong ACS Omega [Image: see text] Li-rich Mn-based oxides are regarded as the most promising new-generation cathode materials, but their practical application is greatly hindered by structure collapse and capacity degradation. Herein, a rock salt phase is epitaxially constructed on the surface of Li-rich Mn-based cathodes through Mo doping to improve their structural stability. The heterogeneous structure composed of a rock salt phase and layered phase is induced by Mo(6+) enriched on the particle surface, and the strong Mo–O bonding can enhance the TM–O covalence. Therefore, it can stabilize lattice oxygen and inhibit the side reaction of the interface and structural phase transition. The discharge capacity of 2% Mo-doped samples (Mo 2%) displays 279.67 mA h g(–1) at 0.1 C (vs 254.39 mA h g(–1) (pristine)), and the discharge capacity retention rate of Mo 2% is 79.4% after 300 cycles at 5 C (vs 47.6% (pristine)). American Chemical Society 2023-02-13 /pmc/articles/PMC9948178/ /pubmed/36844563 http://dx.doi.org/10.1021/acsomega.2c07313 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Li, Yao Zhao, Qing Zhang, Mengke Qiu, Lang Zheng, Zhuo Liu, Yang Sun, Yan Zhong, Benhe Song, Yang Guo, Xiaodong Fabricating Heterostructures for Boosting the Structure Stability of Li-Rich Cathodes |
title | Fabricating Heterostructures for Boosting the Structure
Stability of Li-Rich Cathodes |
title_full | Fabricating Heterostructures for Boosting the Structure
Stability of Li-Rich Cathodes |
title_fullStr | Fabricating Heterostructures for Boosting the Structure
Stability of Li-Rich Cathodes |
title_full_unstemmed | Fabricating Heterostructures for Boosting the Structure
Stability of Li-Rich Cathodes |
title_short | Fabricating Heterostructures for Boosting the Structure
Stability of Li-Rich Cathodes |
title_sort | fabricating heterostructures for boosting the structure
stability of li-rich cathodes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9948178/ https://www.ncbi.nlm.nih.gov/pubmed/36844563 http://dx.doi.org/10.1021/acsomega.2c07313 |
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