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All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors

Lithium-ion capacitors (LICs) have attracted intense attention due to their high energy/power densities and good stability. However, their performance is severely limited by the imbalance in reaction kinetics and electrochemical capacity between the faradaic battery-like anodes and non-faradic capac...

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Autores principales: Li, Mingming, Fang, Yan, Li, Jinghan, Sun, Boya, Du, Jie, Liu, Qinglei, Zhang, Di
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8981920/
https://www.ncbi.nlm.nih.gov/pubmed/35424551
http://dx.doi.org/10.1039/d1ra08885h
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author Li, Mingming
Fang, Yan
Li, Jinghan
Sun, Boya
Du, Jie
Liu, Qinglei
Zhang, Di
author_facet Li, Mingming
Fang, Yan
Li, Jinghan
Sun, Boya
Du, Jie
Liu, Qinglei
Zhang, Di
author_sort Li, Mingming
collection PubMed
description Lithium-ion capacitors (LICs) have attracted intense attention due to their high energy/power densities and good stability. However, their performance is severely limited by the imbalance in reaction kinetics and electrochemical capacity between the faradaic battery-like anodes and non-faradic capacitive cathodes. Here, we propose an all alginate-derived LIC assembled with a three-dimensional porous orthorhombic phase Nb(2)O(5)/C hybrid as the anode, seaweed-derived carbon as the cathode and sodium alginate (SA) as the electrode binder. The increase in the rate performance of the anode and the capacity of the cathode efficiently mitigates the mismatch between the counter electrodes, and the SA binder provides facilitated access for Li ions to the surfaces of electrode materials. The all alginate-derived LIC exhibits high energy (143.9 W h kg(−1) at 87.6 W kg(−1)) and power (17.5 kW kg(−1) at 75.1 W h kg(−1)) densities with a superior cyclability (84.6% capacity retention after 3000 charge–discharge cycles), surpassing those of previous Nb(2)O(5)-based LICs. This work provides a novel design strategy for the electrodes of next-generation high-performance LICs.
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spelling pubmed-89819202022-04-13 All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors Li, Mingming Fang, Yan Li, Jinghan Sun, Boya Du, Jie Liu, Qinglei Zhang, Di RSC Adv Chemistry Lithium-ion capacitors (LICs) have attracted intense attention due to their high energy/power densities and good stability. However, their performance is severely limited by the imbalance in reaction kinetics and electrochemical capacity between the faradaic battery-like anodes and non-faradic capacitive cathodes. Here, we propose an all alginate-derived LIC assembled with a three-dimensional porous orthorhombic phase Nb(2)O(5)/C hybrid as the anode, seaweed-derived carbon as the cathode and sodium alginate (SA) as the electrode binder. The increase in the rate performance of the anode and the capacity of the cathode efficiently mitigates the mismatch between the counter electrodes, and the SA binder provides facilitated access for Li ions to the surfaces of electrode materials. The all alginate-derived LIC exhibits high energy (143.9 W h kg(−1) at 87.6 W kg(−1)) and power (17.5 kW kg(−1) at 75.1 W h kg(−1)) densities with a superior cyclability (84.6% capacity retention after 3000 charge–discharge cycles), surpassing those of previous Nb(2)O(5)-based LICs. This work provides a novel design strategy for the electrodes of next-generation high-performance LICs. The Royal Society of Chemistry 2022-02-16 /pmc/articles/PMC8981920/ /pubmed/35424551 http://dx.doi.org/10.1039/d1ra08885h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Li, Mingming
Fang, Yan
Li, Jinghan
Sun, Boya
Du, Jie
Liu, Qinglei
Zhang, Di
All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title_full All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title_fullStr All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title_full_unstemmed All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title_short All alginate-derived high-performance T-Nb(2)O(5)/C//seaweed carbon Li-ion capacitors
title_sort all alginate-derived high-performance t-nb(2)o(5)/c//seaweed carbon li-ion capacitors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8981920/
https://www.ncbi.nlm.nih.gov/pubmed/35424551
http://dx.doi.org/10.1039/d1ra08885h
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