High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials

A hybrid supercapacitor that employs nanomaterial has been extensively studied recently. However, inexorable collapse and agglomeration of metal oxide and short cycle stability of graphene sheets greatly hinder their practical applications. Herein, we demonstrate a competent synergic effect between...

Full description

Bibliographic Details
Main Authors:	Chuan, Yi Foo, Hong, Ngee Lim, Mohd Adzir, Mahdi, K. F., Chong, Nay, Ming Huan
Format:	Article
Language:	English
Published:	American Chemical Society 2016
Subjects:	QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/1/fist-2016-kfchong-High-Performance%20Supercapacitor1.pdf

id	ump-16774
recordtype	eprints
spelling	ump-167742017-02-23T04:44:19Z http://umpir.ump.edu.my/id/eprint/16774/ High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials Chuan, Yi Foo Hong, Ngee Lim Mohd Adzir, Mahdi K. F., Chong Nay, Ming Huan QD Chemistry A hybrid supercapacitor that employs nanomaterial has been extensively studied recently. However, inexorable collapse and agglomeration of metal oxide and short cycle stability of graphene sheets greatly hinder their practical applications. Herein, we demonstrate a competent synergic effect between nickel cobaltite (NCO) and reduced graphene oxide (rGO) for synthesizing the three-dimensional hierarchical rGO/NCO nanostructures via a facile one-pot hydrothermal method, followed by subsequent annealing in air. The structural and morphological characteristics of as-synthesized rGO/NCO have been characterized in-depth by FESEM, XRD, XPS, BET, and Raman spectroscopy. When incorporated in a two-electrode system with 2.0 M KOH electrolyte, the three-dimensional rGO/NCO nanostructures exhibit excellent supercapacitive performance. This is due to the unique properties of rGO that provide a flexible and expandable platform for growing NCO nanocrystals, which result in a nanoscopic rose petals morphology. These nanostructures provide a large surface area which facilitates the ion diffusion and eventually enhances the specific capacitance. Furthermore, performance studies between the as-synthesized electrode materials with a commercialized supercapacitor proved that the as-synthesized rGO/NCO electrode possesses a proficient potential to be a supercapacitor material, which provides high energy density as well as power density. A two-electrode system is advantageous over a conventional three-electrode system because it mimics the cell configuration of commercial supercapacitors. American Chemical Society 2016-09-14 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/16774/1/fist-2016-kfchong-High-Performance%20Supercapacitor1.pdf Chuan, Yi Foo and Hong, Ngee Lim and Mohd Adzir, Mahdi and K. F., Chong and Nay, Ming Huan (2016) High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials. Journal of Physical Chemistry C, 120 (38). pp. 21202-21210. ISSN 1932-7447 (print); 1932-7455 (online) http://dx.doi.org/10.1021/acs.jpcc.6b05930 DOI: 10.1021/acs.jpcc.6b05930
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Chuan, Yi Foo Hong, Ngee Lim Mohd Adzir, Mahdi K. F., Chong Nay, Ming Huan High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
description	A hybrid supercapacitor that employs nanomaterial has been extensively studied recently. However, inexorable collapse and agglomeration of metal oxide and short cycle stability of graphene sheets greatly hinder their practical applications. Herein, we demonstrate a competent synergic effect between nickel cobaltite (NCO) and reduced graphene oxide (rGO) for synthesizing the three-dimensional hierarchical rGO/NCO nanostructures via a facile one-pot hydrothermal method, followed by subsequent annealing in air. The structural and morphological characteristics of as-synthesized rGO/NCO have been characterized in-depth by FESEM, XRD, XPS, BET, and Raman spectroscopy. When incorporated in a two-electrode system with 2.0 M KOH electrolyte, the three-dimensional rGO/NCO nanostructures exhibit excellent supercapacitive performance. This is due to the unique properties of rGO that provide a flexible and expandable platform for growing NCO nanocrystals, which result in a nanoscopic rose petals morphology. These nanostructures provide a large surface area which facilitates the ion diffusion and eventually enhances the specific capacitance. Furthermore, performance studies between the as-synthesized electrode materials with a commercialized supercapacitor proved that the as-synthesized rGO/NCO electrode possesses a proficient potential to be a supercapacitor material, which provides high energy density as well as power density. A two-electrode system is advantageous over a conventional three-electrode system because it mimics the cell configuration of commercial supercapacitors.
format	Article
author	Chuan, Yi Foo Hong, Ngee Lim Mohd Adzir, Mahdi K. F., Chong Nay, Ming Huan
author_facet	Chuan, Yi Foo Hong, Ngee Lim Mohd Adzir, Mahdi K. F., Chong Nay, Ming Huan
author_sort	Chuan, Yi Foo
title	High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
title_short	High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
title_full	High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
title_fullStr	High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
title_full_unstemmed	High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials
title_sort	high-performance supercapacitor based on three-dimensional hierarchical rgo/nickel cobaltite nanostructures as electrode materials
publisher	American Chemical Society
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/ http://umpir.ump.edu.my/id/eprint/16774/1/fist-2016-kfchong-High-Performance%20Supercapacitor1.pdf
first_indexed	2023-09-18T22:22:47Z
last_indexed	2023-09-18T22:22:47Z
_version_	1777415767864639488

High-Performance Supercapacitor Based on Three-Dimensional Hierarchical rGO/Nickel Cobaltite Nanostructures as Electrode Materials

Similar Items