Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode

A three-dimensional vertical-aligned graphene-polydopamine electrode (PDA@3DVAG) composite with vertical channels and conductive network is prepared by a method of unidirectional freezing and subsequent self-polymerization. When the prepared PDA@3DVAG is constructed as the positive electrode of zinc...

Descripción completa

Detalles Bibliográficos
Autores principales: Cui, Ruowei, Zhang, Zhenwang, Zhang, Huijuan, Tang, Zhihong, Xue, Yuhua, Yang, Guangzhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8839418/
https://www.ncbi.nlm.nih.gov/pubmed/35159731
http://dx.doi.org/10.3390/nano12030386
_version_ 1784650364682764288
author Cui, Ruowei
Zhang, Zhenwang
Zhang, Huijuan
Tang, Zhihong
Xue, Yuhua
Yang, Guangzhi
author_facet Cui, Ruowei
Zhang, Zhenwang
Zhang, Huijuan
Tang, Zhihong
Xue, Yuhua
Yang, Guangzhi
author_sort Cui, Ruowei
collection PubMed
description A three-dimensional vertical-aligned graphene-polydopamine electrode (PDA@3DVAG) composite with vertical channels and conductive network is prepared by a method of unidirectional freezing and subsequent self-polymerization. When the prepared PDA@3DVAG is constructed as the positive electrode of zinc-ion hybrid supercapacitors (ZHSCs), excellent electrochemical performances are obtained. Compared with the conventional electrolyte, PDA@3DVAG composite electrode in highly concentrated salt electrolyte exhibits better multiplicity performance (48.92% at a current density of 3 A g(−1)), wider voltage window (−0.8~0.8 V), better cycle performance with specific capacitance from 96.7 to 59.8 F g(−1), and higher energy density (46.14 Wh kg(−1)).
format Online
Article
Text
id pubmed-8839418
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-88394182022-02-13 Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode Cui, Ruowei Zhang, Zhenwang Zhang, Huijuan Tang, Zhihong Xue, Yuhua Yang, Guangzhi Nanomaterials (Basel) Article A three-dimensional vertical-aligned graphene-polydopamine electrode (PDA@3DVAG) composite with vertical channels and conductive network is prepared by a method of unidirectional freezing and subsequent self-polymerization. When the prepared PDA@3DVAG is constructed as the positive electrode of zinc-ion hybrid supercapacitors (ZHSCs), excellent electrochemical performances are obtained. Compared with the conventional electrolyte, PDA@3DVAG composite electrode in highly concentrated salt electrolyte exhibits better multiplicity performance (48.92% at a current density of 3 A g(−1)), wider voltage window (−0.8~0.8 V), better cycle performance with specific capacitance from 96.7 to 59.8 F g(−1), and higher energy density (46.14 Wh kg(−1)). MDPI 2022-01-25 /pmc/articles/PMC8839418/ /pubmed/35159731 http://dx.doi.org/10.3390/nano12030386 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cui, Ruowei
Zhang, Zhenwang
Zhang, Huijuan
Tang, Zhihong
Xue, Yuhua
Yang, Guangzhi
Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title_full Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title_fullStr Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title_full_unstemmed Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title_short Aqueous Organic Zinc-Ion Hybrid Supercapacitors Prepared by 3D Vertically Aligned Graphene-Polydopamine Composite Electrode
title_sort aqueous organic zinc-ion hybrid supercapacitors prepared by 3d vertically aligned graphene-polydopamine composite electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8839418/
https://www.ncbi.nlm.nih.gov/pubmed/35159731
http://dx.doi.org/10.3390/nano12030386
work_keys_str_mv AT cuiruowei aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode
AT zhangzhenwang aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode
AT zhanghuijuan aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode
AT tangzhihong aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode
AT xueyuhua aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode
AT yangguangzhi aqueousorganiczincionhybridsupercapacitorspreparedby3dverticallyalignedgraphenepolydopaminecompositeelectrode

Ejemplares similares