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Porous Carbon Composite Generated from Silk Fibroins and Graphene for Supercapacitors
[Image: see text] Hierarchical porous heteroatom-doped carbon composites were developed by carbonization followed by KOH activation process, with natural silkworm cocoon and chemical exfoliated graphene sheets as starting materials. The introduction of graphene sheets offers more hierarchical micro/...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9386713/ https://www.ncbi.nlm.nih.gov/pubmed/35990445 http://dx.doi.org/10.1021/acsomega.2c02735 |
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author | Zhou, Lin Hou, Jin-Yang Chen, Yu-Ning Li, Shao-Cheng Zou, Ben-Xue |
author_facet | Zhou, Lin Hou, Jin-Yang Chen, Yu-Ning Li, Shao-Cheng Zou, Ben-Xue |
author_sort | Zhou, Lin |
collection | PubMed |
description | [Image: see text] Hierarchical porous heteroatom-doped carbon composites were developed by carbonization followed by KOH activation process, with natural silkworm cocoon and chemical exfoliated graphene sheets as starting materials. The introduction of graphene sheets offers more hierarchical micro/meso porosities, a low charge-transfer resistance, and a large BET surface area of ∼1281.8 m(2) g(–1), which are responsible for the fast charge/discharge kinetics and the high rate capability compared with those of single silk fibroins-derived carbon materials. The silk fiber provides a high level of heteroatom functionalities (∼2.54% N and ∼21.3% O), which are desirable for high faradaic pseudocapacitance. The as-prepared carbon composite exhibited a high specific capacitance of 290 F g(–1) with good rate capability and cycling stability. The symmetric supercapacitors yielded a high value of energy density of 12.9 W h kg(–1) at a power density of 95 W kg(–1) with a 1.45 V voltage range in 1 M KOH aqueous electrolytes. |
format | Online Article Text |
id | pubmed-9386713 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-93867132022-08-19 Porous Carbon Composite Generated from Silk Fibroins and Graphene for Supercapacitors Zhou, Lin Hou, Jin-Yang Chen, Yu-Ning Li, Shao-Cheng Zou, Ben-Xue ACS Omega [Image: see text] Hierarchical porous heteroatom-doped carbon composites were developed by carbonization followed by KOH activation process, with natural silkworm cocoon and chemical exfoliated graphene sheets as starting materials. The introduction of graphene sheets offers more hierarchical micro/meso porosities, a low charge-transfer resistance, and a large BET surface area of ∼1281.8 m(2) g(–1), which are responsible for the fast charge/discharge kinetics and the high rate capability compared with those of single silk fibroins-derived carbon materials. The silk fiber provides a high level of heteroatom functionalities (∼2.54% N and ∼21.3% O), which are desirable for high faradaic pseudocapacitance. The as-prepared carbon composite exhibited a high specific capacitance of 290 F g(–1) with good rate capability and cycling stability. The symmetric supercapacitors yielded a high value of energy density of 12.9 W h kg(–1) at a power density of 95 W kg(–1) with a 1.45 V voltage range in 1 M KOH aqueous electrolytes. American Chemical Society 2022-08-03 /pmc/articles/PMC9386713/ /pubmed/35990445 http://dx.doi.org/10.1021/acsomega.2c02735 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Zhou, Lin Hou, Jin-Yang Chen, Yu-Ning Li, Shao-Cheng Zou, Ben-Xue Porous Carbon Composite Generated from Silk Fibroins and Graphene for Supercapacitors |
title | Porous Carbon Composite
Generated from Silk Fibroins
and Graphene for Supercapacitors |
title_full | Porous Carbon Composite
Generated from Silk Fibroins
and Graphene for Supercapacitors |
title_fullStr | Porous Carbon Composite
Generated from Silk Fibroins
and Graphene for Supercapacitors |
title_full_unstemmed | Porous Carbon Composite
Generated from Silk Fibroins
and Graphene for Supercapacitors |
title_short | Porous Carbon Composite
Generated from Silk Fibroins
and Graphene for Supercapacitors |
title_sort | porous carbon composite
generated from silk fibroins
and graphene for supercapacitors |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9386713/ https://www.ncbi.nlm.nih.gov/pubmed/35990445 http://dx.doi.org/10.1021/acsomega.2c02735 |
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