Hierarchical NiCo2O4@nickel-sulfide nanoplate arrays for high-performance supercapacitors

Qingxin Chu; Wei Wang; Xiaofeng Wang; Bin Yang; Xiaoyang Liu; Jiuhua Chen

doi:10.1016/j.jpowsour.2014.11.015

Hierarchical NiCo₂O₄@nickel-sulfide nanoplate arrays for high-performance supercapacitors

Qingxin Chu
, Wei Wang
, Xiaofeng Wang
, Bin Yang
, Xiaoyang Liu^*
, Jiuhua Chen

^*Corresponding author for this work

Center for High Pressure Science & Technology Advanced Research
Jilin University
Florida International University

Research output: Contribution to journal › Article › peer-review

110 Scopus citations

Abstract

Electrodeposition of nickel sulfide (Ni-S) on NiCo₂O₄ (NiCo₂O₄@Ni-S) nanoplate arrays produces a new hierarchical core-shell functional-material. Weak crystalline Ni-S nanosheets have been uniformly coated on the NiCo₂O₄ nanoplate array obtained by hydrothermal growth. When tested as an electrode for supercapacitors, the NiCo₂O₄@Ni-S nanoplate arrays have been found to exhibit a significantly improved areal capacitance of 1.85 F cm^-2 at a current density of 8 mA cm^-2, good rate capability and cycling stability. In addition, the capacitance fading of the NiCo₂O₄@Ni-S arrays are attributed to the surface coarsening of the Ni-S nanosheets.

Original language	English
Pages (from-to)	19-25
Number of pages	7
Journal	Journal of Power Sources
Volume	276
DOIs	https://doi.org/10.1016/j.jpowsour.2014.11.015
State	Published - 15 Feb 2015
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Array electrode
Core-shell structure
Nickel cobaltate
Nickel sulfide
Supercapacitor

Access to Document

10.1016/j.jpowsour.2014.11.015

Cite this

@article{1599705265a24a7988466748f4fbfa1e,

title = "Hierarchical NiCo2O4@nickel-sulfide nanoplate arrays for high-performance supercapacitors",

abstract = "Electrodeposition of nickel sulfide (Ni-S) on NiCo2O4 (NiCo2O4@Ni-S) nanoplate arrays produces a new hierarchical core-shell functional-material. Weak crystalline Ni-S nanosheets have been uniformly coated on the NiCo2O4 nanoplate array obtained by hydrothermal growth. When tested as an electrode for supercapacitors, the NiCo2O4@Ni-S nanoplate arrays have been found to exhibit a significantly improved areal capacitance of 1.85 F cm-2 at a current density of 8 mA cm-2, good rate capability and cycling stability. In addition, the capacitance fading of the NiCo2O4@Ni-S arrays are attributed to the surface coarsening of the Ni-S nanosheets.",

keywords = "Array electrode, Core-shell structure, Nickel cobaltate, Nickel sulfide, Supercapacitor",

author = "Qingxin Chu and Wei Wang and Xiaofeng Wang and Bin Yang and Xiaoyang Liu and Jiuhua Chen",

note = "Publisher Copyright: {\textcopyright} Published by Elsevier B.V.",

year = "2015",

month = feb,

day = "15",

doi = "10.1016/j.jpowsour.2014.11.015",

language = "英语",

volume = "276",

pages = "19--25",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Hierarchical NiCo2O4@nickel-sulfide nanoplate arrays for high-performance supercapacitors

AU - Chu, Qingxin

AU - Wang, Wei

AU - Wang, Xiaofeng

AU - Yang, Bin

AU - Liu, Xiaoyang

AU - Chen, Jiuhua

N1 - Publisher Copyright: © Published by Elsevier B.V.

PY - 2015/2/15

Y1 - 2015/2/15

N2 - Electrodeposition of nickel sulfide (Ni-S) on NiCo2O4 (NiCo2O4@Ni-S) nanoplate arrays produces a new hierarchical core-shell functional-material. Weak crystalline Ni-S nanosheets have been uniformly coated on the NiCo2O4 nanoplate array obtained by hydrothermal growth. When tested as an electrode for supercapacitors, the NiCo2O4@Ni-S nanoplate arrays have been found to exhibit a significantly improved areal capacitance of 1.85 F cm-2 at a current density of 8 mA cm-2, good rate capability and cycling stability. In addition, the capacitance fading of the NiCo2O4@Ni-S arrays are attributed to the surface coarsening of the Ni-S nanosheets.

AB - Electrodeposition of nickel sulfide (Ni-S) on NiCo2O4 (NiCo2O4@Ni-S) nanoplate arrays produces a new hierarchical core-shell functional-material. Weak crystalline Ni-S nanosheets have been uniformly coated on the NiCo2O4 nanoplate array obtained by hydrothermal growth. When tested as an electrode for supercapacitors, the NiCo2O4@Ni-S nanoplate arrays have been found to exhibit a significantly improved areal capacitance of 1.85 F cm-2 at a current density of 8 mA cm-2, good rate capability and cycling stability. In addition, the capacitance fading of the NiCo2O4@Ni-S arrays are attributed to the surface coarsening of the Ni-S nanosheets.

KW - Array electrode

KW - Core-shell structure

KW - Nickel cobaltate

KW - Nickel sulfide

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/84912535736

U2 - 10.1016/j.jpowsour.2014.11.015

DO - 10.1016/j.jpowsour.2014.11.015

M3 - 文章

AN - SCOPUS:84912535736

SN - 0378-7753

VL - 276

SP - 19

EP - 25

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -