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Engineering a passivating electric double layer for high performance lithium metal batteries

In electrochemical devices, such as batteries, traditional electric double layer (EDL) theory holds that cations in the cathode/electrolyte interface will be repelled during charging, leaving a large amount of free solvents. This promotes the continuous anodic decomposition of the electrolyte, leadi...

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Autores principales: Zhang, Weili, Lu, Yang, Wan, Lei, Zhou, Pan, Xia, Yingchun, Yan, Shuaishuai, Chen, Xiaoxia, Zhou, Hangyu, Dong, Hao, Liu, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9018679/
https://www.ncbi.nlm.nih.gov/pubmed/35440573
http://dx.doi.org/10.1038/s41467-022-29761-z
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author Zhang, Weili
Lu, Yang
Wan, Lei
Zhou, Pan
Xia, Yingchun
Yan, Shuaishuai
Chen, Xiaoxia
Zhou, Hangyu
Dong, Hao
Liu, Kai
author_facet Zhang, Weili
Lu, Yang
Wan, Lei
Zhou, Pan
Xia, Yingchun
Yan, Shuaishuai
Chen, Xiaoxia
Zhou, Hangyu
Dong, Hao
Liu, Kai
author_sort Zhang, Weili
collection PubMed
description In electrochemical devices, such as batteries, traditional electric double layer (EDL) theory holds that cations in the cathode/electrolyte interface will be repelled during charging, leaving a large amount of free solvents. This promotes the continuous anodic decomposition of the electrolyte, leading to a limited operation voltage and cycle life of the devices. In this work, we design a new EDL structure with adaptive and passivating properties. It is enabled by adding functional anionic additives in the electrolyte, which can selectively bind with cations and free solvents, forming unique cation-rich and branch-chain like supramolecular polymer structures with high electrochemical stability in the EDL inner layer. Due to this design, the anodic decomposition of ether-based electrolytes is significantly suppressed in the high voltage cathodes and the battery shows outstanding performances such as super-fast charging/discharging and ultra-low temperature applications, which is extremely hard in conventional electrolyte design principle. This unconventional EDL structure breaks the inherent perception of the classical EDL rearrangement mechanism and greatly improve electrochemical performances of the device.
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spelling pubmed-90186792022-04-28 Engineering a passivating electric double layer for high performance lithium metal batteries Zhang, Weili Lu, Yang Wan, Lei Zhou, Pan Xia, Yingchun Yan, Shuaishuai Chen, Xiaoxia Zhou, Hangyu Dong, Hao Liu, Kai Nat Commun Article In electrochemical devices, such as batteries, traditional electric double layer (EDL) theory holds that cations in the cathode/electrolyte interface will be repelled during charging, leaving a large amount of free solvents. This promotes the continuous anodic decomposition of the electrolyte, leading to a limited operation voltage and cycle life of the devices. In this work, we design a new EDL structure with adaptive and passivating properties. It is enabled by adding functional anionic additives in the electrolyte, which can selectively bind with cations and free solvents, forming unique cation-rich and branch-chain like supramolecular polymer structures with high electrochemical stability in the EDL inner layer. Due to this design, the anodic decomposition of ether-based electrolytes is significantly suppressed in the high voltage cathodes and the battery shows outstanding performances such as super-fast charging/discharging and ultra-low temperature applications, which is extremely hard in conventional electrolyte design principle. This unconventional EDL structure breaks the inherent perception of the classical EDL rearrangement mechanism and greatly improve electrochemical performances of the device. Nature Publishing Group UK 2022-04-19 /pmc/articles/PMC9018679/ /pubmed/35440573 http://dx.doi.org/10.1038/s41467-022-29761-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhang, Weili
Lu, Yang
Wan, Lei
Zhou, Pan
Xia, Yingchun
Yan, Shuaishuai
Chen, Xiaoxia
Zhou, Hangyu
Dong, Hao
Liu, Kai
Engineering a passivating electric double layer for high performance lithium metal batteries
title Engineering a passivating electric double layer for high performance lithium metal batteries
title_full Engineering a passivating electric double layer for high performance lithium metal batteries
title_fullStr Engineering a passivating electric double layer for high performance lithium metal batteries
title_full_unstemmed Engineering a passivating electric double layer for high performance lithium metal batteries
title_short Engineering a passivating electric double layer for high performance lithium metal batteries
title_sort engineering a passivating electric double layer for high performance lithium metal batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9018679/
https://www.ncbi.nlm.nih.gov/pubmed/35440573
http://dx.doi.org/10.1038/s41467-022-29761-z
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