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Converting Corncob to Activated Porous Carbon for Supercapacitor Application
Carbon materials derived from biomass are promising electrode materials for supercapacitor application due to their specific porosity, low cost and electrochemical stability. Herein, a hierarchical porous carbon derived from corncob was developed for use as electrodes. Benefitting from its hierarchi...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5923511/ https://www.ncbi.nlm.nih.gov/pubmed/29561807 http://dx.doi.org/10.3390/nano8040181 |
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author | Yang, Shaoran Zhang, Kaili |
author_facet | Yang, Shaoran Zhang, Kaili |
author_sort | Yang, Shaoran |
collection | PubMed |
description | Carbon materials derived from biomass are promising electrode materials for supercapacitor application due to their specific porosity, low cost and electrochemical stability. Herein, a hierarchical porous carbon derived from corncob was developed for use as electrodes. Benefitting from its hierarchical porosity, inherited from the natural structure of corncob, high BET surface area (1471.4 m(2)·g(−1)) and excellent electrical conductivity, the novel carbon material exhibited a specific capacitance of 293 F·g(−1) at 1 A·g(−1) in 6 M KOH electrolyte and maintained at 195 F·g(−1) at 5 A·g(−1). In addition, a two-electrode device was assembled and delivered an energy density of 20.15 Wh·kg(−1) at a power density of 500 W·kg(−1) and an outstanding stability of 99.9% capacitance retention after 4000 cycles. |
format | Online Article Text |
id | pubmed-5923511 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-59235112018-05-03 Converting Corncob to Activated Porous Carbon for Supercapacitor Application Yang, Shaoran Zhang, Kaili Nanomaterials (Basel) Article Carbon materials derived from biomass are promising electrode materials for supercapacitor application due to their specific porosity, low cost and electrochemical stability. Herein, a hierarchical porous carbon derived from corncob was developed for use as electrodes. Benefitting from its hierarchical porosity, inherited from the natural structure of corncob, high BET surface area (1471.4 m(2)·g(−1)) and excellent electrical conductivity, the novel carbon material exhibited a specific capacitance of 293 F·g(−1) at 1 A·g(−1) in 6 M KOH electrolyte and maintained at 195 F·g(−1) at 5 A·g(−1). In addition, a two-electrode device was assembled and delivered an energy density of 20.15 Wh·kg(−1) at a power density of 500 W·kg(−1) and an outstanding stability of 99.9% capacitance retention after 4000 cycles. MDPI 2018-03-21 /pmc/articles/PMC5923511/ /pubmed/29561807 http://dx.doi.org/10.3390/nano8040181 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Shaoran Zhang, Kaili Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title | Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title_full | Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title_fullStr | Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title_full_unstemmed | Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title_short | Converting Corncob to Activated Porous Carbon for Supercapacitor Application |
title_sort | converting corncob to activated porous carbon for supercapacitor application |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5923511/ https://www.ncbi.nlm.nih.gov/pubmed/29561807 http://dx.doi.org/10.3390/nano8040181 |
work_keys_str_mv | AT yangshaoran convertingcorncobtoactivatedporouscarbonforsupercapacitorapplication AT zhangkaili convertingcorncobtoactivatedporouscarbonforsupercapacitorapplication |