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Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides
An intriguing mechanism for enabling fast Na kinetics during oxygen redox (OR) is proposed to produce high‐power‐density cathodes for sodium‐ion batteries (SIBs) based on the P2‐type oxide models, Na(2/3)[Mn(6/9)Ni(3/9)]O(2) (NMNO) and Na(2/3)[Ti(1/9)Mn(5/9)Ni(3/9)]O(2) (NTMNO) using the “potential...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10074072/ https://www.ncbi.nlm.nih.gov/pubmed/36748280 http://dx.doi.org/10.1002/advs.202206367 |
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author | Kwon, Dohyeong Park, Sung‐Joon Lee, Jaewoon Park, Sangeon Yu, Seung‐Ho Kim, Duho |
author_facet | Kwon, Dohyeong Park, Sung‐Joon Lee, Jaewoon Park, Sangeon Yu, Seung‐Ho Kim, Duho |
author_sort | Kwon, Dohyeong |
collection | PubMed |
description | An intriguing mechanism for enabling fast Na kinetics during oxygen redox (OR) is proposed to produce high‐power‐density cathodes for sodium‐ion batteries (SIBs) based on the P2‐type oxide models, Na(2/3)[Mn(6/9)Ni(3/9)]O(2) (NMNO) and Na(2/3)[Ti(1/9)Mn(5/9)Ni(3/9)]O(2) (NTMNO) using the “potential pillar” effect. The critical structural parameter of NTMNO lowers the Na migration barrier in the desodiated state because the electrostatic repulsion of O(2p)—O(2p) that occurs between transition metal layers is combined with the chemically stiff Ti(4+)(3d)—O(2p) bond to locally retain the strong repulsion effect. The NTMNO interlayer distance moderately decreases upon charging with oxygen oxidation, whereas that of NMNO decreases at a much faster rate, which can be explained by the dependence of OR activity on the coordination environment. Fundamental electrochemical experiments clearly indicate that the Ti doping of the bare material significantly improves its rate capability during OR, and detailed electrochemical and structural analyses show much faster Na kinetics for NTMNO than for NMNO. A systematic comparison of the two cathode oxides based on experiments and first‐principles calculations establishes the “potential pillar” concept of not only improving the sluggish Na kinetics upon OR reaction but also harnessing the full potential of the anionic redox for high‐power‐density SIBs. |
format | Online Article Text |
id | pubmed-10074072 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-100740722023-04-06 Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides Kwon, Dohyeong Park, Sung‐Joon Lee, Jaewoon Park, Sangeon Yu, Seung‐Ho Kim, Duho Adv Sci (Weinh) Research Articles An intriguing mechanism for enabling fast Na kinetics during oxygen redox (OR) is proposed to produce high‐power‐density cathodes for sodium‐ion batteries (SIBs) based on the P2‐type oxide models, Na(2/3)[Mn(6/9)Ni(3/9)]O(2) (NMNO) and Na(2/3)[Ti(1/9)Mn(5/9)Ni(3/9)]O(2) (NTMNO) using the “potential pillar” effect. The critical structural parameter of NTMNO lowers the Na migration barrier in the desodiated state because the electrostatic repulsion of O(2p)—O(2p) that occurs between transition metal layers is combined with the chemically stiff Ti(4+)(3d)—O(2p) bond to locally retain the strong repulsion effect. The NTMNO interlayer distance moderately decreases upon charging with oxygen oxidation, whereas that of NMNO decreases at a much faster rate, which can be explained by the dependence of OR activity on the coordination environment. Fundamental electrochemical experiments clearly indicate that the Ti doping of the bare material significantly improves its rate capability during OR, and detailed electrochemical and structural analyses show much faster Na kinetics for NTMNO than for NMNO. A systematic comparison of the two cathode oxides based on experiments and first‐principles calculations establishes the “potential pillar” concept of not only improving the sluggish Na kinetics upon OR reaction but also harnessing the full potential of the anionic redox for high‐power‐density SIBs. John Wiley and Sons Inc. 2023-02-07 /pmc/articles/PMC10074072/ /pubmed/36748280 http://dx.doi.org/10.1002/advs.202206367 Text en © 2023 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Kwon, Dohyeong Park, Sung‐Joon Lee, Jaewoon Park, Sangeon Yu, Seung‐Ho Kim, Duho Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title | Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title_full | Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title_fullStr | Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title_full_unstemmed | Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title_short | Strong Anionic Repulsion for Fast Na Kinetics in P2‐Type Layered Oxides |
title_sort | strong anionic repulsion for fast na kinetics in p2‐type layered oxides |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10074072/ https://www.ncbi.nlm.nih.gov/pubmed/36748280 http://dx.doi.org/10.1002/advs.202206367 |
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