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Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres

Herein, good electrical conductivity and high specific surface area carbon aerogel (CA) microspheres were synthesized by a facile and economical route using a high temperature carbonization and CO(2) activation method. The electroconductive graphitized structure of the CA microspheres could be easil...

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Autores principales: Liu, Xichuan, Yuan, Lei, Zhong, Minglong, Ni, Shuang, Yang, Fan, Fu, Zhibing, Xu, Xibin, Wang, Chaoyang, Tang, Yongjian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054511/
https://www.ncbi.nlm.nih.gov/pubmed/35516609
http://dx.doi.org/10.1039/d0ra01735c
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author Liu, Xichuan
Yuan, Lei
Zhong, Minglong
Ni, Shuang
Yang, Fan
Fu, Zhibing
Xu, Xibin
Wang, Chaoyang
Tang, Yongjian
author_facet Liu, Xichuan
Yuan, Lei
Zhong, Minglong
Ni, Shuang
Yang, Fan
Fu, Zhibing
Xu, Xibin
Wang, Chaoyang
Tang, Yongjian
author_sort Liu, Xichuan
collection PubMed
description Herein, good electrical conductivity and high specific surface area carbon aerogel (CA) microspheres were synthesized by a facile and economical route using a high temperature carbonization and CO(2) activation method. The electroconductive graphitized structure of the CA microspheres could be easily improved by increasing the carbonization temperature. Then the CA microspheres were activated with CO(2) to increase the specific surface area of the electrode material for electric double layer capacitors (EDLC). The sample carbonized at 1500 °C for 0.5 h and CO(2) activated at 950 °C for 8 h showed an acceptable specific surface area and excellent cycle performance and rate capability for EDLC: 98% of the initial value of the capacitance was retained after 10 000 cycles, a specific capacitance of 121 F g(−1) at 0.2 A g(−1) and 101 F g(−1) at 2 A g(−1).
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spelling pubmed-90545112022-05-04 Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres Liu, Xichuan Yuan, Lei Zhong, Minglong Ni, Shuang Yang, Fan Fu, Zhibing Xu, Xibin Wang, Chaoyang Tang, Yongjian RSC Adv Chemistry Herein, good electrical conductivity and high specific surface area carbon aerogel (CA) microspheres were synthesized by a facile and economical route using a high temperature carbonization and CO(2) activation method. The electroconductive graphitized structure of the CA microspheres could be easily improved by increasing the carbonization temperature. Then the CA microspheres were activated with CO(2) to increase the specific surface area of the electrode material for electric double layer capacitors (EDLC). The sample carbonized at 1500 °C for 0.5 h and CO(2) activated at 950 °C for 8 h showed an acceptable specific surface area and excellent cycle performance and rate capability for EDLC: 98% of the initial value of the capacitance was retained after 10 000 cycles, a specific capacitance of 121 F g(−1) at 0.2 A g(−1) and 101 F g(−1) at 2 A g(−1). The Royal Society of Chemistry 2020-06-10 /pmc/articles/PMC9054511/ /pubmed/35516609 http://dx.doi.org/10.1039/d0ra01735c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Liu, Xichuan
Yuan, Lei
Zhong, Minglong
Ni, Shuang
Yang, Fan
Fu, Zhibing
Xu, Xibin
Wang, Chaoyang
Tang, Yongjian
Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title_full Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title_fullStr Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title_full_unstemmed Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title_short Enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
title_sort enhanced capacitive performance by improving the graphitized structure in carbon aerogel microspheres
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054511/
https://www.ncbi.nlm.nih.gov/pubmed/35516609
http://dx.doi.org/10.1039/d0ra01735c
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