Core-shell CoMoO4@Ni(OH)2 on ordered macro-porous electrode plate for high-performance supercapacitor

Mai Li; Hongxing Yang; Yuanhao Wang; Lianwei Wang; Paul K. Chu

doi:10.1016/j.electacta.2018.06.043

Core-shell CoMoO₄@Ni(OH)₂ on ordered macro-porous electrode plate for high-performance supercapacitor

Mai Li^*
, Hongxing Yang
, Yuanhao Wang
, Lianwei Wang
, Paul K. Chu

^*Corresponding author for this work

School of Physics and Electronic Science

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

34 Scopus citations

Abstract

Multidimensional CoMoO₄@Ni(OH)₂ nanocomposite materials are fabricated on the nickel modified surface and channels of an ordered macro-porous electrode plate (OMEP) by a multistep high temperature hydrothermal method as the supercapacitor electrode in a high power density energy storage device. The effects, morphology, capacitive properties, and formation mechanism of the CoMoO₄@Ni(OH)₂ composite materials are systematically investigated. Compared to nanostructured nickel grown on the OMEP or CoMoO₄@Ni(OH)₂ on nickel plate with the same area, the CoMoO₄@Ni(OH)₂/OMEP shows enhanced electrochemical energy storage properties such as high energy capacitance of 8.55 F cm⁻² (1812.42 F g⁻¹) at 2 mA cm⁻² and good cycling stability of 87.42% capacity retention after 5000 cycles. An asymmetrical supercapacitor (ASC) device is assembled with a polyethylene (PE) membrane, CoMoO₄@Ni(OH)₂/OMEP, and active carbon covered nickel foam. The ASC with the CoMoO₄@Ni(OH)₂/OMEP has an energy density of 9.66 Wh Kg⁻¹ even at a power density of 3000 W Kg⁻¹ as well as stable power characteristics with 86.5% retention after 10,000 cycles at a current of 0.06 A. The device produces large instantaneous power after charging at 2.8 V for 10 s one ASC can power a 5 mm red LED with high efficiency.

Original language	English
Pages (from-to)	538-547
Number of pages	10
Journal	Electrochimica Acta
Volume	283
DOIs	https://doi.org/10.1016/j.electacta.2018.06.043
State	Published - 1 Sep 2018

Keywords

Core-shell structure
Energy storage
Hybrid device
Ordered macro-porous electrode plate
Supercapacitors

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10.1016/j.electacta.2018.06.043

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@article{bcd211971dfe4a149b2c2df084ce36c5,

title = "Core-shell CoMoO4@Ni(OH)2 on ordered macro-porous electrode plate for high-performance supercapacitor",

abstract = "Multidimensional CoMoO4@Ni(OH)2 nanocomposite materials are fabricated on the nickel modified surface and channels of an ordered macro-porous electrode plate (OMEP) by a multistep high temperature hydrothermal method as the supercapacitor electrode in a high power density energy storage device. The effects, morphology, capacitive properties, and formation mechanism of the CoMoO4@Ni(OH)2 composite materials are systematically investigated. Compared to nanostructured nickel grown on the OMEP or CoMoO4@Ni(OH)2 on nickel plate with the same area, the CoMoO4@Ni(OH)2/OMEP shows enhanced electrochemical energy storage properties such as high energy capacitance of 8.55 F cm−2 (1812.42 F g−1) at 2 mA cm−2 and good cycling stability of 87.42\% capacity retention after 5000 cycles. An asymmetrical supercapacitor (ASC) device is assembled with a polyethylene (PE) membrane, CoMoO4@Ni(OH)2/OMEP, and active carbon covered nickel foam. The ASC with the CoMoO4@Ni(OH)2/OMEP has an energy density of 9.66 Wh Kg−1 even at a power density of 3000 W Kg−1 as well as stable power characteristics with 86.5\% retention after 10,000 cycles at a current of 0.06 A. The device produces large instantaneous power after charging at 2.8 V for 10 s one ASC can power a 5 mm red LED with high efficiency.",

keywords = "Core-shell structure, Energy storage, Hybrid device, Ordered macro-porous electrode plate, Supercapacitors",

author = "Mai Li and Hongxing Yang and Yuanhao Wang and Lianwei Wang and Chu, \{Paul K.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

day = "1",

doi = "10.1016/j.electacta.2018.06.043",

language = "英语",

volume = "283",

pages = "538--547",

journal = "Electrochimica Acta",

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publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Core-shell CoMoO4@Ni(OH)2 on ordered macro-porous electrode plate for high-performance supercapacitor

AU - Li, Mai

AU - Yang, Hongxing

AU - Wang, Yuanhao

AU - Wang, Lianwei

AU - Chu, Paul K.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - Multidimensional CoMoO4@Ni(OH)2 nanocomposite materials are fabricated on the nickel modified surface and channels of an ordered macro-porous electrode plate (OMEP) by a multistep high temperature hydrothermal method as the supercapacitor electrode in a high power density energy storage device. The effects, morphology, capacitive properties, and formation mechanism of the CoMoO4@Ni(OH)2 composite materials are systematically investigated. Compared to nanostructured nickel grown on the OMEP or CoMoO4@Ni(OH)2 on nickel plate with the same area, the CoMoO4@Ni(OH)2/OMEP shows enhanced electrochemical energy storage properties such as high energy capacitance of 8.55 F cm−2 (1812.42 F g−1) at 2 mA cm−2 and good cycling stability of 87.42% capacity retention after 5000 cycles. An asymmetrical supercapacitor (ASC) device is assembled with a polyethylene (PE) membrane, CoMoO4@Ni(OH)2/OMEP, and active carbon covered nickel foam. The ASC with the CoMoO4@Ni(OH)2/OMEP has an energy density of 9.66 Wh Kg−1 even at a power density of 3000 W Kg−1 as well as stable power characteristics with 86.5% retention after 10,000 cycles at a current of 0.06 A. The device produces large instantaneous power after charging at 2.8 V for 10 s one ASC can power a 5 mm red LED with high efficiency.

AB - Multidimensional CoMoO4@Ni(OH)2 nanocomposite materials are fabricated on the nickel modified surface and channels of an ordered macro-porous electrode plate (OMEP) by a multistep high temperature hydrothermal method as the supercapacitor electrode in a high power density energy storage device. The effects, morphology, capacitive properties, and formation mechanism of the CoMoO4@Ni(OH)2 composite materials are systematically investigated. Compared to nanostructured nickel grown on the OMEP or CoMoO4@Ni(OH)2 on nickel plate with the same area, the CoMoO4@Ni(OH)2/OMEP shows enhanced electrochemical energy storage properties such as high energy capacitance of 8.55 F cm−2 (1812.42 F g−1) at 2 mA cm−2 and good cycling stability of 87.42% capacity retention after 5000 cycles. An asymmetrical supercapacitor (ASC) device is assembled with a polyethylene (PE) membrane, CoMoO4@Ni(OH)2/OMEP, and active carbon covered nickel foam. The ASC with the CoMoO4@Ni(OH)2/OMEP has an energy density of 9.66 Wh Kg−1 even at a power density of 3000 W Kg−1 as well as stable power characteristics with 86.5% retention after 10,000 cycles at a current of 0.06 A. The device produces large instantaneous power after charging at 2.8 V for 10 s one ASC can power a 5 mm red LED with high efficiency.

KW - Core-shell structure

KW - Energy storage

KW - Hybrid device

KW - Ordered macro-porous electrode plate

KW - Supercapacitors

UR - https://www.scopus.com/pages/publications/85049456771

U2 - 10.1016/j.electacta.2018.06.043

DO - 10.1016/j.electacta.2018.06.043

M3 - 文章

AN - SCOPUS:85049456771

SN - 0013-4686

VL - 283

SP - 538

EP - 547

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Core-shell CoMoO₄@Ni(OH)₂ on ordered macro-porous electrode plate for high-performance supercapacitor

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Keywords

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