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Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries

Organic compounds bearing redox‐active ionic pairs as electrode materials for high‐performance rechargeable batteries have gained growing attention owing to the properties of synthetic tunability, high theoretical capacity, and low solubility. Herein, an innovative biredox‐ionic composite, i.e., eth...

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Autores principales: Wang, Zhongju, Fan, Qianqian, Guo, Wei, Yang, Changchun, Fu, Yongzhu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8728824/
https://www.ncbi.nlm.nih.gov/pubmed/34716685
http://dx.doi.org/10.1002/advs.202103632
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author Wang, Zhongju
Fan, Qianqian
Guo, Wei
Yang, Changchun
Fu, Yongzhu
author_facet Wang, Zhongju
Fan, Qianqian
Guo, Wei
Yang, Changchun
Fu, Yongzhu
author_sort Wang, Zhongju
collection PubMed
description Organic compounds bearing redox‐active ionic pairs as electrode materials for high‐performance rechargeable batteries have gained growing attention owing to the properties of synthetic tunability, high theoretical capacity, and low solubility. Herein, an innovative biredox‐ionic composite, i.e., ethylviologen dianthraquinone‐2‐sulfonate (EV‐AQ(2)), affording multiple and reversible active sites as a cathode material in lithium‐organic batteries is reported. EV‐AQ(2) exhibits a high initial capacity of 199.2 mAh g(−1) at 0.1 C rate, which corresponds to the transfer of two electrons from one redox couple EV(2+)/EV(0) and four electrons from two redox‐active AQ(−) anions. It is notable that EV‐AQ(2) shows remarkably improved cyclability compared to the precursors. The capacity retention is 89% and the Coulombic efficiency approaches 100% over 120 cycles at 0.5 C rate. The results offer evidence that AQ(−) into the EV(2+) scaffold with multiple redox sites are promising in developing high‐energy‐density organic rechargeable batteries.
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spelling pubmed-87288242022-01-11 Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries Wang, Zhongju Fan, Qianqian Guo, Wei Yang, Changchun Fu, Yongzhu Adv Sci (Weinh) Research Articles Organic compounds bearing redox‐active ionic pairs as electrode materials for high‐performance rechargeable batteries have gained growing attention owing to the properties of synthetic tunability, high theoretical capacity, and low solubility. Herein, an innovative biredox‐ionic composite, i.e., ethylviologen dianthraquinone‐2‐sulfonate (EV‐AQ(2)), affording multiple and reversible active sites as a cathode material in lithium‐organic batteries is reported. EV‐AQ(2) exhibits a high initial capacity of 199.2 mAh g(−1) at 0.1 C rate, which corresponds to the transfer of two electrons from one redox couple EV(2+)/EV(0) and four electrons from two redox‐active AQ(−) anions. It is notable that EV‐AQ(2) shows remarkably improved cyclability compared to the precursors. The capacity retention is 89% and the Coulombic efficiency approaches 100% over 120 cycles at 0.5 C rate. The results offer evidence that AQ(−) into the EV(2+) scaffold with multiple redox sites are promising in developing high‐energy‐density organic rechargeable batteries. John Wiley and Sons Inc. 2021-10-29 /pmc/articles/PMC8728824/ /pubmed/34716685 http://dx.doi.org/10.1002/advs.202103632 Text en © 2021 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
Wang, Zhongju
Fan, Qianqian
Guo, Wei
Yang, Changchun
Fu, Yongzhu
Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title_full Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title_fullStr Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title_full_unstemmed Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title_short Biredox‐Ionic Anthraquinone‐Coupled Ethylviologen Composite Enables Reversible Multielectron Redox Chemistry for Li‐Organic Batteries
title_sort biredox‐ionic anthraquinone‐coupled ethylviologen composite enables reversible multielectron redox chemistry for li‐organic batteries
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8728824/
https://www.ncbi.nlm.nih.gov/pubmed/34716685
http://dx.doi.org/10.1002/advs.202103632
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