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Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries
Calcium‐ion batteries (CIBs) are considered as promising alternatives in large‐scale energy storage due to their divalent electron redox properties, low cost, and high volumetric/gravimetric capacity. However, the high charge density of Ca(2+) contributes to strong electrostatic interaction between...
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/PMC9108664/ https://www.ncbi.nlm.nih.gov/pubmed/35306763 http://dx.doi.org/10.1002/advs.202200397 |
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author | Zhang, Siqi Zhu, Youliang Wang, Denghu Li, Chunguang Han, Yu Shi, Zhan Feng, Shouhua |
author_facet | Zhang, Siqi Zhu, Youliang Wang, Denghu Li, Chunguang Han, Yu Shi, Zhan Feng, Shouhua |
author_sort | Zhang, Siqi |
collection | PubMed |
description | Calcium‐ion batteries (CIBs) are considered as promising alternatives in large‐scale energy storage due to their divalent electron redox properties, low cost, and high volumetric/gravimetric capacity. However, the high charge density of Ca(2+) contributes to strong electrostatic interaction between divalent Ca(2+) and hosting lattice, leading to sluggish kinetics and poor rate performance. Here, in situ formed poly(anthraquinonyl sulfide) (PAQS)@CNT composite is reported as nonaqueous calcium‐ion battery cathode. The enolization redox chemistry of organics has fast redox kinetics, and the introduction of carbon nanotube (CNT) accelerates electron transportation, which contributes to fast ionic diffusion. As the conductivity of the PAQS is enhanced by the increasing content of CNT, the voltage gap is significantly reduced. The PAQS@CNT electrode exhibits specific capacity (116 mAh g(−1) at 0.05 A g(−1)), high rate capacity (60 mAh g(−1) at 4 A g(−1)), and an initial capacity of 82 mAh g(−1) at 1 A g(−1) (83% capacity retention after 500 cycles). The electrochemical mechanism is proved to be that the PAQS undergoes reduction reaction of their carbonyl bond during discharge and becomes coordinated by Ca(2+) and Ca(TFSI)(+) species. Computational simulation also suggests that the construction of Ca(2+) and Ca(TFSI)(+) co‐intercalation in the PAQS is the most reasonable pathway. |
format | Online Article Text |
id | pubmed-9108664 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-91086642022-05-20 Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries Zhang, Siqi Zhu, Youliang Wang, Denghu Li, Chunguang Han, Yu Shi, Zhan Feng, Shouhua Adv Sci (Weinh) Research Articles Calcium‐ion batteries (CIBs) are considered as promising alternatives in large‐scale energy storage due to their divalent electron redox properties, low cost, and high volumetric/gravimetric capacity. However, the high charge density of Ca(2+) contributes to strong electrostatic interaction between divalent Ca(2+) and hosting lattice, leading to sluggish kinetics and poor rate performance. Here, in situ formed poly(anthraquinonyl sulfide) (PAQS)@CNT composite is reported as nonaqueous calcium‐ion battery cathode. The enolization redox chemistry of organics has fast redox kinetics, and the introduction of carbon nanotube (CNT) accelerates electron transportation, which contributes to fast ionic diffusion. As the conductivity of the PAQS is enhanced by the increasing content of CNT, the voltage gap is significantly reduced. The PAQS@CNT electrode exhibits specific capacity (116 mAh g(−1) at 0.05 A g(−1)), high rate capacity (60 mAh g(−1) at 4 A g(−1)), and an initial capacity of 82 mAh g(−1) at 1 A g(−1) (83% capacity retention after 500 cycles). The electrochemical mechanism is proved to be that the PAQS undergoes reduction reaction of their carbonyl bond during discharge and becomes coordinated by Ca(2+) and Ca(TFSI)(+) species. Computational simulation also suggests that the construction of Ca(2+) and Ca(TFSI)(+) co‐intercalation in the PAQS is the most reasonable pathway. John Wiley and Sons Inc. 2022-03-20 /pmc/articles/PMC9108664/ /pubmed/35306763 http://dx.doi.org/10.1002/advs.202200397 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 Zhang, Siqi Zhu, Youliang Wang, Denghu Li, Chunguang Han, Yu Shi, Zhan Feng, Shouhua Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title | Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title_full | Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title_fullStr | Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title_full_unstemmed | Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title_short | Poly(Anthraquinonyl Sulfide)/CNT Composites as High‐Rate‐Performance Cathodes for Nonaqueous Rechargeable Calcium‐Ion Batteries |
title_sort | poly(anthraquinonyl sulfide)/cnt composites as high‐rate‐performance cathodes for nonaqueous rechargeable calcium‐ion batteries |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9108664/ https://www.ncbi.nlm.nih.gov/pubmed/35306763 http://dx.doi.org/10.1002/advs.202200397 |
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