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Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties

In this study, manganese-containing porous carbon was synthesized from jujube shells by two-step carbonization and activation and was then covered with Ti(3)C(2)Tx to obtain double-doped biomass composites. In order to improve the interfacial properties (surface tension and wettability) between Ti(3...

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Autores principales: Sun, Xue, Fan, Qingwen, Yin, Xiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657630/
https://www.ncbi.nlm.nih.gov/pubmed/36363126
http://dx.doi.org/10.3390/ma15217532
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author Sun, Xue
Fan, Qingwen
Yin, Xiang
author_facet Sun, Xue
Fan, Qingwen
Yin, Xiang
author_sort Sun, Xue
collection PubMed
description In this study, manganese-containing porous carbon was synthesized from jujube shells by two-step carbonization and activation and was then covered with Ti(3)C(2)Tx to obtain double-doped biomass composites. In order to improve the interfacial properties (surface tension and wettability) between Ti(3)C(2)Tx and porous carbon, the effects of two media (deionized water and acetone solution) on the electrochemical properties of the composites were compared. The acetone solution changed the surface rheology of Ti(3)C(2)Tx and porous carbon, and the decreased surface tension and the increased wettability contributed to the ordered growth of 2D-Ti(3)C(2)Tx on the surface of the porous carbon. Raman analysis shows the relatively higher graphitization degree of JSPC&Ti(3)C(2)Tx (acetone). Compared with JSPC&Ti(3)C(2)Tx, JSPC&Ti(3)C(2)Tx (acetone) can maintain better rectangle-like properties even at a higher scanning rate. Under the effect of the acetone solution, the pseudocapacitive ratio of JSPC&Ti(3)C(2)Tx (acetone) increased from 10.1% to 30.7%. At the current density of 0.5 A/g, the specific capacitance of JSPC&Ti(3)C(2)Tx (acetone) achieved 96.83 F/g, and the specific capacitance of 58.17 F/g was maintained even at the high current density (10 A/g), which shows excellent magnification. Under the condition of the current density of 10 A/g, JSPC&Ti(3)C(2)Tx (acetone) can obtain a power density of 52,000 W/kg while maintaining an energy density of 8.74 Wh/kg. After 2000 cycles, the symmetrical button battery assembled with this material can still have a capacitance retention rate of more than 90%. This method realized the deep utilization of green and low-cost raw materials by using biomass as the precursor of composite materials and promoted the further development of carbon-based supercapacitor electrode materials.
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spelling pubmed-96576302022-11-15 Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties Sun, Xue Fan, Qingwen Yin, Xiang Materials (Basel) Article In this study, manganese-containing porous carbon was synthesized from jujube shells by two-step carbonization and activation and was then covered with Ti(3)C(2)Tx to obtain double-doped biomass composites. In order to improve the interfacial properties (surface tension and wettability) between Ti(3)C(2)Tx and porous carbon, the effects of two media (deionized water and acetone solution) on the electrochemical properties of the composites were compared. The acetone solution changed the surface rheology of Ti(3)C(2)Tx and porous carbon, and the decreased surface tension and the increased wettability contributed to the ordered growth of 2D-Ti(3)C(2)Tx on the surface of the porous carbon. Raman analysis shows the relatively higher graphitization degree of JSPC&Ti(3)C(2)Tx (acetone). Compared with JSPC&Ti(3)C(2)Tx, JSPC&Ti(3)C(2)Tx (acetone) can maintain better rectangle-like properties even at a higher scanning rate. Under the effect of the acetone solution, the pseudocapacitive ratio of JSPC&Ti(3)C(2)Tx (acetone) increased from 10.1% to 30.7%. At the current density of 0.5 A/g, the specific capacitance of JSPC&Ti(3)C(2)Tx (acetone) achieved 96.83 F/g, and the specific capacitance of 58.17 F/g was maintained even at the high current density (10 A/g), which shows excellent magnification. Under the condition of the current density of 10 A/g, JSPC&Ti(3)C(2)Tx (acetone) can obtain a power density of 52,000 W/kg while maintaining an energy density of 8.74 Wh/kg. After 2000 cycles, the symmetrical button battery assembled with this material can still have a capacitance retention rate of more than 90%. This method realized the deep utilization of green and low-cost raw materials by using biomass as the precursor of composite materials and promoted the further development of carbon-based supercapacitor electrode materials. MDPI 2022-10-27 /pmc/articles/PMC9657630/ /pubmed/36363126 http://dx.doi.org/10.3390/ma15217532 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sun, Xue
Fan, Qingwen
Yin, Xiang
Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title_full Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title_fullStr Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title_full_unstemmed Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title_short Jujube Shell Based-Porous Carbon Composites Double-Doped by MnO(2) and Ti(3)C(2)Tx: The Effect of Double Pseudocapacitive Doping on Electrochemical Properties
title_sort jujube shell based-porous carbon composites double-doped by mno(2) and ti(3)c(2)tx: the effect of double pseudocapacitive doping on electrochemical properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657630/
https://www.ncbi.nlm.nih.gov/pubmed/36363126
http://dx.doi.org/10.3390/ma15217532
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