Hybrid Co(OH)2/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors

Cheng Liang; Leilei Chen; Dajun Wu; Chi Zhang; Shaohui Xu; Yiping Zhu; Dayuan Xiong; Pingxiong Yang; Lianwei Wang; Paul K. Chu

doi:10.1016/j.matlet.2016.02.132

Hybrid Co(OH)₂/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors

Cheng Liang, Leilei Chen, Dajun Wu, Chi Zhang, Shaohui Xu, Yiping Zhu, Dayuan Xiong, Pingxiong Yang, Lianwei Wang, Paul K. Chu

School of Physics and Electronic Science

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

16 Scopus citations

Abstract

Nano-scale Co(OH)₂/NG (nano-graphene: NG) composites serving as the active materials of miniature supercapacitors are deposited on macroporous electrically conductive network (MECN). The Co(OH)₂/NG composite in the channels largely contribute to the capacitance. The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a 2 M KOH solution. The Co(OH)₂/NG composite exhibits a stable capacitance of 3.522 F/cm² (880.5 F/g) and retention ratio is 99% after 5000 cycles demonstrating the stability and durability. The Co(OH)₂/NG/MECN can be scanned faster than Co(OH)₂/MECN in CV because of the higher conductivity.

Original language	English
Pages (from-to)	40-43
Number of pages	4
Journal	Materials Letters
Volume	172
DOIs	https://doi.org/10.1016/j.matlet.2016.02.132
State	Published - 1 Jun 2016

Keywords

Carbon materials
Co(OH)
Composite materials
Deposition
MECN
Supercapacitor

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10.1016/j.matlet.2016.02.132

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@article{be055855425549848453127cda018d3f,

title = "Hybrid Co(OH)2/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors",

abstract = "Nano-scale Co(OH)2/NG (nano-graphene: NG) composites serving as the active materials of miniature supercapacitors are deposited on macroporous electrically conductive network (MECN). The Co(OH)2/NG composite in the channels largely contribute to the capacitance. The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a 2 M KOH solution. The Co(OH)2/NG composite exhibits a stable capacitance of 3.522 F/cm2 (880.5 F/g) and retention ratio is 99\% after 5000 cycles demonstrating the stability and durability. The Co(OH)2/NG/MECN can be scanned faster than Co(OH)2/MECN in CV because of the higher conductivity.",

keywords = "Carbon materials, Co(OH), Composite materials, Deposition, MECN, Supercapacitor",

author = "Cheng Liang and Leilei Chen and Dajun Wu and Chi Zhang and Shaohui Xu and Yiping Zhu and Dayuan Xiong and Pingxiong Yang and Lianwei Wang and Chu, \{Paul K.\}",

year = "2016",

month = jun,

day = "1",

doi = "10.1016/j.matlet.2016.02.132",

language = "英语",

volume = "172",

pages = "40--43",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Hybrid Co(OH)2/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors

AU - Liang, Cheng

AU - Chen, Leilei

AU - Wu, Dajun

AU - Zhang, Chi

AU - Xu, Shaohui

AU - Zhu, Yiping

AU - Xiong, Dayuan

AU - Yang, Pingxiong

AU - Wang, Lianwei

AU - Chu, Paul K.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Nano-scale Co(OH)2/NG (nano-graphene: NG) composites serving as the active materials of miniature supercapacitors are deposited on macroporous electrically conductive network (MECN). The Co(OH)2/NG composite in the channels largely contribute to the capacitance. The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a 2 M KOH solution. The Co(OH)2/NG composite exhibits a stable capacitance of 3.522 F/cm2 (880.5 F/g) and retention ratio is 99% after 5000 cycles demonstrating the stability and durability. The Co(OH)2/NG/MECN can be scanned faster than Co(OH)2/MECN in CV because of the higher conductivity.

AB - Nano-scale Co(OH)2/NG (nano-graphene: NG) composites serving as the active materials of miniature supercapacitors are deposited on macroporous electrically conductive network (MECN). The Co(OH)2/NG composite in the channels largely contribute to the capacitance. The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a 2 M KOH solution. The Co(OH)2/NG composite exhibits a stable capacitance of 3.522 F/cm2 (880.5 F/g) and retention ratio is 99% after 5000 cycles demonstrating the stability and durability. The Co(OH)2/NG/MECN can be scanned faster than Co(OH)2/MECN in CV because of the higher conductivity.

KW - Carbon materials

KW - Co(OH)

KW - Composite materials

KW - Deposition

KW - MECN

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/84960902144

U2 - 10.1016/j.matlet.2016.02.132

DO - 10.1016/j.matlet.2016.02.132

M3 - 文章

AN - SCOPUS:84960902144

SN - 0167-577X

VL - 172

SP - 40

EP - 43

JO - Materials Letters

JF - Materials Letters

ER -

Hybrid Co(OH)₂/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors

Abstract

Keywords

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