Electrochimica Acta, ( ISI ), Volume (271), No (1), Year (2018-4) , Pages (507-518)

Title : ( Core-shell structured Ni3S2 nanorods grown on interconnected Ni-graphene foam for symmetric supercapacitors )

Authors: Elham Kamali Heidari , Zheng-Long Xu , M. Heydarzadeh Sohi , A. Ataie , Jang-Kyo Kim ,

Citation: BibTeX | EndNote

Abstract

We report the synthesis of mesoporous Ni3S2 nanorod arrays on three-dimensional Ni-graphene foams by a facile hydrothermal method for ultrahigh performance supercapacitors. The graphene foam facilitates unique morphological evolution during the hydrothermal process, from a mesoporous, monolithic structure to nanorod arrays of Ni3S2 with a hollow core-solid shell structure and to entirely solid nanorod arrays of Ni3S2. The Ni3S2 composite electrode delivers a remarkable specific capacitance of 1900 F g−1 at a current density of 1 A g−1, as well as promising cyclic stability with a high capacitance of 940 F g−1 after 2000 cycles at 10 A g−1 and 96% retention of its initial capacitance after the 2001st cycle at 5 A g−1. The symmetric supercapacitor prepared using the Ni3S2 electrodes under an optimum condition operates in a wide potential window of 0–1.6 V and offers a specific capacitance of 190.5 F g-1 at 4.5 mA cm−2 along with a maximum energy density of 67.7 W h kg-1. The promising electrochemical performance along with the facile synthesis strategy offers a new insight into developing high performance supercapacitors for emerging energy storage applications.

Keywords

Ni3S2 ;Nanorod; Graphene; Symmetric supercapacitor
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@article{paperid:1067992,
author = {Kamali Heidari, Elham and and and and },
title = {Core-shell structured Ni3S2 nanorods grown on interconnected Ni-graphene foam for symmetric supercapacitors},
journal = {Electrochimica Acta},
year = {2018},
volume = {271},
number = {1},
month = {April},
issn = {0013-4686},
pages = {507--518},
numpages = {11},
keywords = {Ni3S2 ;Nanorod; Graphene; Symmetric supercapacitor},
}

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%0 Journal Article
%T Core-shell structured Ni3S2 nanorods grown on interconnected Ni-graphene foam for symmetric supercapacitors
%A Kamali Heidari, Elham
%A
%A
%A
%A
%J Electrochimica Acta
%@ 0013-4686
%D 2018

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