Cargando…

Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode

Hierarchical porous structures with surface nitrogen-doped porous carbon are current research topics of interest for high performance supercapacitor electrode materials. Herein, a three-dimensional (3D) honeycomb-like porous carbon with interconnected hierarchical porosity and nitrogen self-doping w...

Descripción completa

Detalles Bibliográficos
Autores principales: Chen, Hui, Wang, Gang, Chen, Long, Dai, Bin, Yu, Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6027543/
https://www.ncbi.nlm.nih.gov/pubmed/29890629
http://dx.doi.org/10.3390/nano8060412
_version_ 1783336636495429632
author Chen, Hui
Wang, Gang
Chen, Long
Dai, Bin
Yu, Feng
author_facet Chen, Hui
Wang, Gang
Chen, Long
Dai, Bin
Yu, Feng
author_sort Chen, Hui
collection PubMed
description Hierarchical porous structures with surface nitrogen-doped porous carbon are current research topics of interest for high performance supercapacitor electrode materials. Herein, a three-dimensional (3D) honeycomb-like porous carbon with interconnected hierarchical porosity and nitrogen self-doping was synthesized by simple and cost-efficient one-step KOH activation from waste cottonseed husk (a-CSHs). The obtained a-CSHs possessed hierarchical micro-, meso-, and macro-pores, a high specific surface area of 1694.1 m(2)/g, 3D architecture, and abundant self N-doping. Owing to these distinct features, a-CSHs delivered high specific capacitances of 238 F/g and 200 F/g at current densities of 0.5 A/g and 20 A/g, respectively, in a 6 mol/L KOH electrolyte, demonstrating good capacitance retention of 84%. The assembled a-CSHs-based symmetric supercapacitor also displayed high specific capacitance of 52 F/g at 0.5 A/g, with an energy density of 10.4 Wh/Kg at 300 W/Kg, and 91% capacitance retention after 5000 cycles at 10 A/g.
format Online
Article
Text
id pubmed-6027543
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-60275432018-07-13 Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode Chen, Hui Wang, Gang Chen, Long Dai, Bin Yu, Feng Nanomaterials (Basel) Article Hierarchical porous structures with surface nitrogen-doped porous carbon are current research topics of interest for high performance supercapacitor electrode materials. Herein, a three-dimensional (3D) honeycomb-like porous carbon with interconnected hierarchical porosity and nitrogen self-doping was synthesized by simple and cost-efficient one-step KOH activation from waste cottonseed husk (a-CSHs). The obtained a-CSHs possessed hierarchical micro-, meso-, and macro-pores, a high specific surface area of 1694.1 m(2)/g, 3D architecture, and abundant self N-doping. Owing to these distinct features, a-CSHs delivered high specific capacitances of 238 F/g and 200 F/g at current densities of 0.5 A/g and 20 A/g, respectively, in a 6 mol/L KOH electrolyte, demonstrating good capacitance retention of 84%. The assembled a-CSHs-based symmetric supercapacitor also displayed high specific capacitance of 52 F/g at 0.5 A/g, with an energy density of 10.4 Wh/Kg at 300 W/Kg, and 91% capacitance retention after 5000 cycles at 10 A/g. MDPI 2018-06-08 /pmc/articles/PMC6027543/ /pubmed/29890629 http://dx.doi.org/10.3390/nano8060412 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
Chen, Hui
Wang, Gang
Chen, Long
Dai, Bin
Yu, Feng
Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title_full Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title_fullStr Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title_full_unstemmed Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title_short Three-Dimensional Honeycomb-Like Porous Carbon with Both Interconnected Hierarchical Porosity and Nitrogen Self-Doping from Cotton Seed Husk for Supercapacitor Electrode
title_sort three-dimensional honeycomb-like porous carbon with both interconnected hierarchical porosity and nitrogen self-doping from cotton seed husk for supercapacitor electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6027543/
https://www.ncbi.nlm.nih.gov/pubmed/29890629
http://dx.doi.org/10.3390/nano8060412
work_keys_str_mv AT chenhui threedimensionalhoneycomblikeporouscarbonwithbothinterconnectedhierarchicalporosityandnitrogenselfdopingfromcottonseedhuskforsupercapacitorelectrode
AT wanggang threedimensionalhoneycomblikeporouscarbonwithbothinterconnectedhierarchicalporosityandnitrogenselfdopingfromcottonseedhuskforsupercapacitorelectrode
AT chenlong threedimensionalhoneycomblikeporouscarbonwithbothinterconnectedhierarchicalporosityandnitrogenselfdopingfromcottonseedhuskforsupercapacitorelectrode
AT daibin threedimensionalhoneycomblikeporouscarbonwithbothinterconnectedhierarchicalporosityandnitrogenselfdopingfromcottonseedhuskforsupercapacitorelectrode
AT yufeng threedimensionalhoneycomblikeporouscarbonwithbothinterconnectedhierarchicalporosityandnitrogenselfdopingfromcottonseedhuskforsupercapacitorelectrode