NDLI: Enhanced electrochemical performance of hybrid SnO2@MOx (M = Ni, Co, Mn) core–shell nanostructures grown on flexible carbon fibers as the supercapacitor electrode materials

Content Provider	Royal Society of Chemistry (RSC)
Author	Jiao, Yang Wu, Xiang Qu, Fengyu Liu, Yang Zhang, Siwen Yin, Bosi
Copyright Year	2015
Abstract	In this study, hierarchical SnO2@MOx (SnO2@NiO, SnO2@Co3O4, and SnO2@MnO2) heterostructures grown on carbon cloth (CC) for high performance supercapacitors were fabricated by a two-step solution-based method involving a hydrothermal process and a chemical bath deposition, which utilizes the better electronic conductivity of SnO2 nanosheets as the supporting backbone to deposit MOx for supercapacitor electrodes. Particularly, the as-formed SnO2@MOx heterostructure electrodes showed better electrochemical performance than bare SnO2 nanosheets. Remarkably, the SnO2@MnO2 heterostructure electrode showed the highest discharge areal capacitance (980 mF cm−2 at 1 mA cm−2), good rate capability (still 767 mF cm−2 at 20 mA cm−2), and excellent cycling stability (∼21.9% loss after 6000 repetitive cycles at a charge–discharge current density of 1 mA cm−2). The enhanced pseudocapacitive performance was mainly attributed to its unique hybrid structure, which provides fast ion and electron transfer, a large number of active sites, and good strain accommodation. The excellent electrochemical performance of the as-obtained heterostructures will undoubtedly make these hybrid structures attractive for high performance supercapacitors with high power and energy densities.
Starting Page	3676
Ending Page	3682
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	7
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta06339b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon Hydrothermal circulation Chemical bath deposition Supercapacitor Heterojunction Electrochemistry Electrode Capacitance Electric current Ion
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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