Cargando…

A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors

We demonstrate a facile and effective method, which is low-cost and easy to scale up, to fabricate holey graphene nanosheets (HGNSs) via ultrafast heating during synthesis. Various heating temperatures are used to modify the material properties of HGNSs. First, we use HGNSs as the electrode active m...

Descripción completa

Detalles Bibliográficos
Autores principales: Huang, Jun-Bin, Patra, Jagabandhu, Lin, Ming-Hsien, Ger, Ming-Der, Liu, Yih-Ming, Pu, Nen-Wen, Hsieh, Chien-Te, Youh, Meng-Jey, Dong, Quan-Feng, Chang, Jeng-Kuei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240531/
https://www.ncbi.nlm.nih.gov/pubmed/32244627
http://dx.doi.org/10.3390/polym12040765
_version_ 1783536904985116672
author Huang, Jun-Bin
Patra, Jagabandhu
Lin, Ming-Hsien
Ger, Ming-Der
Liu, Yih-Ming
Pu, Nen-Wen
Hsieh, Chien-Te
Youh, Meng-Jey
Dong, Quan-Feng
Chang, Jeng-Kuei
author_facet Huang, Jun-Bin
Patra, Jagabandhu
Lin, Ming-Hsien
Ger, Ming-Der
Liu, Yih-Ming
Pu, Nen-Wen
Hsieh, Chien-Te
Youh, Meng-Jey
Dong, Quan-Feng
Chang, Jeng-Kuei
author_sort Huang, Jun-Bin
collection PubMed
description We demonstrate a facile and effective method, which is low-cost and easy to scale up, to fabricate holey graphene nanosheets (HGNSs) via ultrafast heating during synthesis. Various heating temperatures are used to modify the material properties of HGNSs. First, we use HGNSs as the electrode active materials for electric double-layer capacitors (EDLCs). A synthesis temperature of 900 °C seems to be optimal, i.e., the conductivity and adhesion of HGNSs reach a compromise. The gravimetric capacitance of this HGNS sample (namely HGNS-900) is 56 F·g(−1). However, the volumetric capacitance is low, which hinders its practical application. Secondly, we incorporate activated carbon (AC) into HGNS-900 to make a composite EDLC material. The effect of the AC:HGNS-900 ratio on the capacitance, high-rate performance, and cycling stability are systematically investigated. With a proper amount of HGNS-900, both the electrode gravimetric and volumetric capacitances at high rate charging/discharging are clearly higher than those of plain AC electrodes. The AC/HGNS-900 composite is a promising electrode material for nonaqueous EDLC applications.
format Online
Article
Text
id pubmed-7240531
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-72405312020-06-11 A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors Huang, Jun-Bin Patra, Jagabandhu Lin, Ming-Hsien Ger, Ming-Der Liu, Yih-Ming Pu, Nen-Wen Hsieh, Chien-Te Youh, Meng-Jey Dong, Quan-Feng Chang, Jeng-Kuei Polymers (Basel) Article We demonstrate a facile and effective method, which is low-cost and easy to scale up, to fabricate holey graphene nanosheets (HGNSs) via ultrafast heating during synthesis. Various heating temperatures are used to modify the material properties of HGNSs. First, we use HGNSs as the electrode active materials for electric double-layer capacitors (EDLCs). A synthesis temperature of 900 °C seems to be optimal, i.e., the conductivity and adhesion of HGNSs reach a compromise. The gravimetric capacitance of this HGNS sample (namely HGNS-900) is 56 F·g(−1). However, the volumetric capacitance is low, which hinders its practical application. Secondly, we incorporate activated carbon (AC) into HGNS-900 to make a composite EDLC material. The effect of the AC:HGNS-900 ratio on the capacitance, high-rate performance, and cycling stability are systematically investigated. With a proper amount of HGNS-900, both the electrode gravimetric and volumetric capacitances at high rate charging/discharging are clearly higher than those of plain AC electrodes. The AC/HGNS-900 composite is a promising electrode material for nonaqueous EDLC applications. MDPI 2020-04-01 /pmc/articles/PMC7240531/ /pubmed/32244627 http://dx.doi.org/10.3390/polym12040765 Text en © 2020 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
Huang, Jun-Bin
Patra, Jagabandhu
Lin, Ming-Hsien
Ger, Ming-Der
Liu, Yih-Ming
Pu, Nen-Wen
Hsieh, Chien-Te
Youh, Meng-Jey
Dong, Quan-Feng
Chang, Jeng-Kuei
A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title_full A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title_fullStr A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title_full_unstemmed A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title_short A Holey Graphene Additive for Boosting Performance of Electric Double-Layer Supercapacitors
title_sort holey graphene additive for boosting performance of electric double-layer supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240531/
https://www.ncbi.nlm.nih.gov/pubmed/32244627
http://dx.doi.org/10.3390/polym12040765
work_keys_str_mv AT huangjunbin aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT patrajagabandhu aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT linminghsien aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT germingder aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT liuyihming aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT punenwen aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT hsiehchiente aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT youhmengjey aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT dongquanfeng aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT changjengkuei aholeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT huangjunbin holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT patrajagabandhu holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT linminghsien holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT germingder holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT liuyihming holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT punenwen holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT hsiehchiente holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT youhmengjey holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT dongquanfeng holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors
AT changjengkuei holeygrapheneadditiveforboostingperformanceofelectricdoublelayersupercapacitors