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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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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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). |
format | Online Article Text |
id | pubmed-9054511 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
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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