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Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries
The energy density of batteries with lithium cobalt oxide (LCO) can be maximized by increasing the cut‐off voltage to approach the theoretical capacity limit. However, it is not realized in the practical applications due to the restricted cycle life caused by vulnerable cathode surface in deep delit...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9008786/ https://www.ncbi.nlm.nih.gov/pubmed/35170232 http://dx.doi.org/10.1002/advs.202104841 |
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author | Mao, Shulan Shen, Zeyu Zhang, Weidong Wu, Qian Wang, Zhuoya Lu, Yingying |
author_facet | Mao, Shulan Shen, Zeyu Zhang, Weidong Wu, Qian Wang, Zhuoya Lu, Yingying |
author_sort | Mao, Shulan |
collection | PubMed |
description | The energy density of batteries with lithium cobalt oxide (LCO) can be maximized by increasing the cut‐off voltage to approach the theoretical capacity limit. However, it is not realized in the practical applications due to the restricted cycle life caused by vulnerable cathode surface in deep delithiation state, where severe side reactions, oxygen/cobalt loss and structure degradation often happen. Here, an outside‐in oriented nanostructure on LiCoO(2) crystals is fabricated. The outer electrochemically stable LiF and Li(2)CoTi(3)O(8) particles perform as physical barrier to prevent damage of both cathodes and electrolytes, while the inner F doping promote Li ions diffusivity and stabilize the lattice oxygen. With the spinel‐like transition layer between them, a solid and complete lithium‐ion transport channel generation along the lithium concentration gradient. Under the protection from this structure, the LiCoO(2) withstand the high voltage of 4.6 V and the LCO/graphite pouch full cell with high loading density exhibits 81.52% energy density retention after 135 cycles at 4.5 V. |
format | Online Article Text |
id | pubmed-9008786 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-90087862022-04-15 Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries Mao, Shulan Shen, Zeyu Zhang, Weidong Wu, Qian Wang, Zhuoya Lu, Yingying Adv Sci (Weinh) Research Articles The energy density of batteries with lithium cobalt oxide (LCO) can be maximized by increasing the cut‐off voltage to approach the theoretical capacity limit. However, it is not realized in the practical applications due to the restricted cycle life caused by vulnerable cathode surface in deep delithiation state, where severe side reactions, oxygen/cobalt loss and structure degradation often happen. Here, an outside‐in oriented nanostructure on LiCoO(2) crystals is fabricated. The outer electrochemically stable LiF and Li(2)CoTi(3)O(8) particles perform as physical barrier to prevent damage of both cathodes and electrolytes, while the inner F doping promote Li ions diffusivity and stabilize the lattice oxygen. With the spinel‐like transition layer between them, a solid and complete lithium‐ion transport channel generation along the lithium concentration gradient. Under the protection from this structure, the LiCoO(2) withstand the high voltage of 4.6 V and the LCO/graphite pouch full cell with high loading density exhibits 81.52% energy density retention after 135 cycles at 4.5 V. John Wiley and Sons Inc. 2022-02-16 /pmc/articles/PMC9008786/ /pubmed/35170232 http://dx.doi.org/10.1002/advs.202104841 Text en © 2022 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 Mao, Shulan Shen, Zeyu Zhang, Weidong Wu, Qian Wang, Zhuoya Lu, Yingying Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title | Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title_full | Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title_fullStr | Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title_full_unstemmed | Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title_short | Outside‐In Nanostructure Fabricated on LiCoO(2) Surface for High‐Voltage Lithium‐Ion Batteries |
title_sort | outside‐in nanostructure fabricated on licoo(2) surface for high‐voltage lithium‐ion batteries |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9008786/ https://www.ncbi.nlm.nih.gov/pubmed/35170232 http://dx.doi.org/10.1002/advs.202104841 |
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