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Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping

The application of Li‐rich layered oxides is hindered by their dramatic capacity and voltage decay on cycling. This work comprehensively studies the mechanistic behaviour of cobalt‐free Li(1.2)Ni(0.2)Mn(0.6)O(2) and demonstrates the positive impact of two‐phase Ru doping. A mechanistic transition fr...

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Autores principales: Fan, Yameng, Olsson, Emilia, Liang, Gemeng, Wang, Zhijie, D'Angelo, Anita M., Johannessen, Bernt, Thomsen, Lars, Cowie, Bruce, Li, Jingxi, Zhang, Fangli, Zhao, Yunlong, Pang, Wei Kong, Cai, Qiong, Guo, Zaiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10108050/
https://www.ncbi.nlm.nih.gov/pubmed/36456529
http://dx.doi.org/10.1002/anie.202213806
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author Fan, Yameng
Olsson, Emilia
Liang, Gemeng
Wang, Zhijie
D'Angelo, Anita M.
Johannessen, Bernt
Thomsen, Lars
Cowie, Bruce
Li, Jingxi
Zhang, Fangli
Zhao, Yunlong
Pang, Wei Kong
Cai, Qiong
Guo, Zaiping
author_facet Fan, Yameng
Olsson, Emilia
Liang, Gemeng
Wang, Zhijie
D'Angelo, Anita M.
Johannessen, Bernt
Thomsen, Lars
Cowie, Bruce
Li, Jingxi
Zhang, Fangli
Zhao, Yunlong
Pang, Wei Kong
Cai, Qiong
Guo, Zaiping
author_sort Fan, Yameng
collection PubMed
description The application of Li‐rich layered oxides is hindered by their dramatic capacity and voltage decay on cycling. This work comprehensively studies the mechanistic behaviour of cobalt‐free Li(1.2)Ni(0.2)Mn(0.6)O(2) and demonstrates the positive impact of two‐phase Ru doping. A mechanistic transition from the monoclinic to the hexagonal behaviour is found for the structural evolution of Li(1.2)Ni(0.2)Mn(0.6)O(2,) and the improvement mechanism of Ru doping is understood using the combination of in operando and post‐mortem synchrotron analyses. The two‐phase Ru doping improves the structural reversibility in the first cycle and restrains structural degradation during cycling by stabilizing oxygen (O(2−)) redox and reducing Mn reduction, thus enabling high structural stability, an extraordinarily stable voltage (decay rate <0.45 mV per cycle), and a high capacity‐retention rate during long‐term cycling. The understanding of the structure‐function relationship of Li(1.2)Ni(0.2)Mn(0.6)O(2) sheds light on the selective doping strategy and rational materials design for better‐performance Li‐rich layered oxides.
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spelling pubmed-101080502023-04-18 Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping Fan, Yameng Olsson, Emilia Liang, Gemeng Wang, Zhijie D'Angelo, Anita M. Johannessen, Bernt Thomsen, Lars Cowie, Bruce Li, Jingxi Zhang, Fangli Zhao, Yunlong Pang, Wei Kong Cai, Qiong Guo, Zaiping Angew Chem Int Ed Engl Research Articles The application of Li‐rich layered oxides is hindered by their dramatic capacity and voltage decay on cycling. This work comprehensively studies the mechanistic behaviour of cobalt‐free Li(1.2)Ni(0.2)Mn(0.6)O(2) and demonstrates the positive impact of two‐phase Ru doping. A mechanistic transition from the monoclinic to the hexagonal behaviour is found for the structural evolution of Li(1.2)Ni(0.2)Mn(0.6)O(2,) and the improvement mechanism of Ru doping is understood using the combination of in operando and post‐mortem synchrotron analyses. The two‐phase Ru doping improves the structural reversibility in the first cycle and restrains structural degradation during cycling by stabilizing oxygen (O(2−)) redox and reducing Mn reduction, thus enabling high structural stability, an extraordinarily stable voltage (decay rate <0.45 mV per cycle), and a high capacity‐retention rate during long‐term cycling. The understanding of the structure‐function relationship of Li(1.2)Ni(0.2)Mn(0.6)O(2) sheds light on the selective doping strategy and rational materials design for better‐performance Li‐rich layered oxides. John Wiley and Sons Inc. 2022-12-22 2023-01-26 /pmc/articles/PMC10108050/ /pubmed/36456529 http://dx.doi.org/10.1002/anie.202213806 Text en © 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Research Articles
Fan, Yameng
Olsson, Emilia
Liang, Gemeng
Wang, Zhijie
D'Angelo, Anita M.
Johannessen, Bernt
Thomsen, Lars
Cowie, Bruce
Li, Jingxi
Zhang, Fangli
Zhao, Yunlong
Pang, Wei Kong
Cai, Qiong
Guo, Zaiping
Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title_full Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title_fullStr Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title_full_unstemmed Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title_short Stabilizing Cobalt‐free Li‐rich Layered Oxide Cathodes through Oxygen Lattice Regulation by Two‐phase Ru Doping
title_sort stabilizing cobalt‐free li‐rich layered oxide cathodes through oxygen lattice regulation by two‐phase ru doping
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10108050/
https://www.ncbi.nlm.nih.gov/pubmed/36456529
http://dx.doi.org/10.1002/anie.202213806
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