Cargando…

Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites

Porous graphene materials show outstanding performance in energy storage field due to their unique microstructure and properties. To construct 3D hierarchical porous graphene and combine with conductive polyaniline is an effective way to realize high energy density and good cycling stability. The in...

Descripción completa

Detalles Bibliográficos
Autores principales: Hou, Zhaoxia, Kong, Lingxi, Zou, Shengnan, Zhao, Lanwei, Yang, Lirong
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/PMC9048468/
https://www.ncbi.nlm.nih.gov/pubmed/35496120
http://dx.doi.org/10.1039/c9ra07248a
_version_ 1784695934833131520
author Hou, Zhaoxia
Kong, Lingxi
Zou, Shengnan
Zhao, Lanwei
Yang, Lirong
author_facet Hou, Zhaoxia
Kong, Lingxi
Zou, Shengnan
Zhao, Lanwei
Yang, Lirong
author_sort Hou, Zhaoxia
collection PubMed
description Porous graphene materials show outstanding performance in energy storage field due to their unique microstructure and properties. To construct 3D hierarchical porous graphene and combine with conductive polyaniline is an effective way to realize high energy density and good cycling stability. The interlamellar macroporous structure of 3D graphene was constructed by polystyrene (PS) microspheres and nickel foam as double templates. The mesoporous structure was etched in 3D macroporous graphene sheets by potassium hydroxide (KOH) chemical activation. And 3D hierarchical porous graphene (3D-hpGr) composited with polyaniline (PANI) by in situ chemical oxidative polymerization to obtain 3D-hpGr/PANI composites. The effect of the introduction of 3D-hpGr on microstructure, morphology and electrochemical performance of the composites was investigated. PANI nanowire arrays successfully decorate the surface of the 3D-hpGr sheets when the amount of 3D-hpGr reaches 40% (wt%). The specific capacitance of 3D-hpGr/PANI40 reaches 573 F g(−1) at 0.5 A g(−1), much higher than that of pure PANI (419 F g(−1)). The retention ratio of 3D-hpGr/PANI40 retains 84% of its initial specific capacitance after 1000 cycles at 1.0 A g(−1), and the cycling stability of all composites is higher than that of pure PANI (69%). The potential drop of 3D-hpGr/PANI composites decreases from 0.339 V to 0.139 V, and the energy density increases consequently. The energy density of 3D-hpGr/PANI40 reaches 31.2 W h kg(−1) at the power density of 0.709 kW kg(−1).
format Online
Article
Text
id pubmed-9048468
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90484682022-04-28 Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites Hou, Zhaoxia Kong, Lingxi Zou, Shengnan Zhao, Lanwei Yang, Lirong RSC Adv Chemistry Porous graphene materials show outstanding performance in energy storage field due to their unique microstructure and properties. To construct 3D hierarchical porous graphene and combine with conductive polyaniline is an effective way to realize high energy density and good cycling stability. The interlamellar macroporous structure of 3D graphene was constructed by polystyrene (PS) microspheres and nickel foam as double templates. The mesoporous structure was etched in 3D macroporous graphene sheets by potassium hydroxide (KOH) chemical activation. And 3D hierarchical porous graphene (3D-hpGr) composited with polyaniline (PANI) by in situ chemical oxidative polymerization to obtain 3D-hpGr/PANI composites. The effect of the introduction of 3D-hpGr on microstructure, morphology and electrochemical performance of the composites was investigated. PANI nanowire arrays successfully decorate the surface of the 3D-hpGr sheets when the amount of 3D-hpGr reaches 40% (wt%). The specific capacitance of 3D-hpGr/PANI40 reaches 573 F g(−1) at 0.5 A g(−1), much higher than that of pure PANI (419 F g(−1)). The retention ratio of 3D-hpGr/PANI40 retains 84% of its initial specific capacitance after 1000 cycles at 1.0 A g(−1), and the cycling stability of all composites is higher than that of pure PANI (69%). The potential drop of 3D-hpGr/PANI composites decreases from 0.339 V to 0.139 V, and the energy density increases consequently. The energy density of 3D-hpGr/PANI40 reaches 31.2 W h kg(−1) at the power density of 0.709 kW kg(−1). The Royal Society of Chemistry 2020-01-20 /pmc/articles/PMC9048468/ /pubmed/35496120 http://dx.doi.org/10.1039/c9ra07248a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Hou, Zhaoxia
Kong, Lingxi
Zou, Shengnan
Zhao, Lanwei
Yang, Lirong
Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title_full Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title_fullStr Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title_full_unstemmed Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title_short Microstructure and electrochemical performance of 3D hierarchical porous graphene/polyaniline composites
title_sort microstructure and electrochemical performance of 3d hierarchical porous graphene/polyaniline composites
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9048468/
https://www.ncbi.nlm.nih.gov/pubmed/35496120
http://dx.doi.org/10.1039/c9ra07248a
work_keys_str_mv AT houzhaoxia microstructureandelectrochemicalperformanceof3dhierarchicalporousgraphenepolyanilinecomposites
AT konglingxi microstructureandelectrochemicalperformanceof3dhierarchicalporousgraphenepolyanilinecomposites
AT zoushengnan microstructureandelectrochemicalperformanceof3dhierarchicalporousgraphenepolyanilinecomposites
AT zhaolanwei microstructureandelectrochemicalperformanceof3dhierarchicalporousgraphenepolyanilinecomposites
AT yanglirong microstructureandelectrochemicalperformanceof3dhierarchicalporousgraphenepolyanilinecomposites