Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage

Rajkumar Patel; Akbar I. Inamdar; Bo Hou; Seung Nam Cha; Abu Talha Ansari; Jayavant L. Gunjakar; Hyunsik Im; Hyungsang Kim

doi:10.1016/j.cap.2017.01.020

Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage

Rajkumar Patel, Akbar I. Inamdar, Bo Hou, Seung Nam Cha, Abu Talha Ansari, Jayavant L. Gunjakar, Hyunsik Im, Hyungsang Kim

Division of System Semiconductor

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

30 Scopus citations

Abstract

A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)₂) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)₂ electrode exhibits a high specific capacitance of 2710.2 F/g at a current density of 9.1 A/g, and a good capacity retention of ∼70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)₂ electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector.

Original language	English
Pages (from-to)	501-506
Number of pages	6
Journal	Current Applied Physics
Volume	17
Issue number	4
DOIs	https://doi.org/10.1016/j.cap.2017.01.020
State	Published - 1 Apr 2017

Keywords

Electrochemical properties
Nanofoam structure
Nickel cobalt hydroxide
Solvothermal process

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@article{f4310ceb4ab6435385371720419c179d,

title = "Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage",

abstract = "A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)2) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)2 electrode exhibits a high specific capacitance of 2710.2 F/g at a current density of 9.1 A/g, and a good capacity retention of ∼70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)2 electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector.",

keywords = "Electrochemical properties, Nanofoam structure, Nickel cobalt hydroxide, Solvothermal process",

author = "Rajkumar Patel and Inamdar, {Akbar I.} and Bo Hou and Cha, {Seung Nam} and Ansari, {Abu Talha} and Gunjakar, {Jayavant L.} and Hyunsik Im and Hyungsang Kim",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = apr,

day = "1",

doi = "10.1016/j.cap.2017.01.020",

language = "English",

volume = "17",

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T1 - Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage

AU - Patel, Rajkumar

AU - Inamdar, Akbar I.

AU - Hou, Bo

AU - Cha, Seung Nam

AU - Ansari, Abu Talha

AU - Gunjakar, Jayavant L.

AU - Im, Hyunsik

AU - Kim, Hyungsang

PY - 2017/4/1

Y1 - 2017/4/1

N2 - A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)2) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)2 electrode exhibits a high specific capacitance of 2710.2 F/g at a current density of 9.1 A/g, and a good capacity retention of ∼70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)2 electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector.

AB - A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)2) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)2 electrode exhibits a high specific capacitance of 2710.2 F/g at a current density of 9.1 A/g, and a good capacity retention of ∼70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)2 electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector.

KW - Electrochemical properties

KW - Nanofoam structure

KW - Nickel cobalt hydroxide

KW - Solvothermal process

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U2 - 10.1016/j.cap.2017.01.020

DO - 10.1016/j.cap.2017.01.020

M3 - Article

AN - SCOPUS:85011312015

SN - 1567-1739

VL - 17

SP - 501

EP - 506

JO - Current Applied Physics

JF - Current Applied Physics

IS - 4

ER -

Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage

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Keywords

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