Free-standing, flexible β-Ni(OH)                         2                         /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution

Lanlan Wang; Jian Zhang; Weitao Jiang; Hong Zhao; Hongzhong Liu

doi:10.1016/j.apsusc.2017.09.196

Free-standing, flexible β-Ni(OH) ₂ /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution

Lanlan Wang
, Jian Zhang
, Weitao Jiang
, Hong Zhao
, Hongzhong Liu

School of Mechanical Engineering

Xi'an Jiaotong University
Technische Universität Dresden

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

17 Scopus citations

Abstract

The oxidation of water into molecular oxygen (oxygen evolution reaction, OER) is a pivotal reaction in many energy conversion devices. The high cost of IrO ₂ , however, seriously hinder its large-scale applications in water oxidation. Here, we have at first reported a free-standing and flexible film electrode consisting of 2D β-Ni(OH) ₂ /electrochemically-exfoliated graphene hybrid nanosheets (NiG-2), which is synthesized by a solvothermal reaction and an assembly process. The as-obtained NiG-2 film electrode exhibited an excellent electrocatalytic OER activity with an extremely low OER onset overpotential of ∼250 mV in a 1 M KOH aqueous solution, which is lower than these of the commercial Ir/C (370 mV at 10 mA cm ⁻² ) catalyst.

Original language	English
Pages (from-to)	88-93
Number of pages	6
Journal	Applied Surface Science
Volume	433
DOIs	https://doi.org/10.1016/j.apsusc.2017.09.196
State	Published - 1 Mar 2018

Keywords

Film electrode
Flexible
Free-standing
Graphene
Nickel hydroxide
Water oxidation

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10.1016/j.apsusc.2017.09.196

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@article{a2cdce6c71eb4c248f2060be183f0d62,

title = " Free-standing, flexible β-Ni(OH) 2 /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution ",

abstract = " The oxidation of water into molecular oxygen (oxygen evolution reaction, OER) is a pivotal reaction in many energy conversion devices. The high cost of IrO 2 , however, seriously hinder its large-scale applications in water oxidation. Here, we have at first reported a free-standing and flexible film electrode consisting of 2D β-Ni(OH) 2 /electrochemically-exfoliated graphene hybrid nanosheets (NiG-2), which is synthesized by a solvothermal reaction and an assembly process. The as-obtained NiG-2 film electrode exhibited an excellent electrocatalytic OER activity with an extremely low OER onset overpotential of ∼250 mV in a 1 M KOH aqueous solution, which is lower than these of the commercial Ir/C (370 mV at 10 mA cm −2 ) catalyst.",

keywords = "Film electrode, Flexible, Free-standing, Graphene, Nickel hydroxide, Water oxidation",

author = "Lanlan Wang and Jian Zhang and Weitao Jiang and Hong Zhao and Hongzhong Liu",

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

year = "2018",

month = mar,

day = "1",

doi = "10.1016/j.apsusc.2017.09.196",

language = "英语",

volume = "433",

pages = "88--93",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

Free-standing, flexible β-Ni(OH) ₂ /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution . / Wang, Lanlan; Zhang, Jian; Jiang, Weitao et al.
In: Applied Surface Science, Vol. 433, 01.03.2018, p. 88-93.

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

TY - JOUR

T1 - Free-standing, flexible β-Ni(OH) 2 /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution

AU - Wang, Lanlan

AU - Zhang, Jian

AU - Jiang, Weitao

AU - Zhao, Hong

AU - Liu, Hongzhong

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The oxidation of water into molecular oxygen (oxygen evolution reaction, OER) is a pivotal reaction in many energy conversion devices. The high cost of IrO 2 , however, seriously hinder its large-scale applications in water oxidation. Here, we have at first reported a free-standing and flexible film electrode consisting of 2D β-Ni(OH) 2 /electrochemically-exfoliated graphene hybrid nanosheets (NiG-2), which is synthesized by a solvothermal reaction and an assembly process. The as-obtained NiG-2 film electrode exhibited an excellent electrocatalytic OER activity with an extremely low OER onset overpotential of ∼250 mV in a 1 M KOH aqueous solution, which is lower than these of the commercial Ir/C (370 mV at 10 mA cm −2 ) catalyst.

AB - The oxidation of water into molecular oxygen (oxygen evolution reaction, OER) is a pivotal reaction in many energy conversion devices. The high cost of IrO 2 , however, seriously hinder its large-scale applications in water oxidation. Here, we have at first reported a free-standing and flexible film electrode consisting of 2D β-Ni(OH) 2 /electrochemically-exfoliated graphene hybrid nanosheets (NiG-2), which is synthesized by a solvothermal reaction and an assembly process. The as-obtained NiG-2 film electrode exhibited an excellent electrocatalytic OER activity with an extremely low OER onset overpotential of ∼250 mV in a 1 M KOH aqueous solution, which is lower than these of the commercial Ir/C (370 mV at 10 mA cm −2 ) catalyst.

KW - Film electrode

KW - Flexible

KW - Free-standing

KW - Graphene

KW - Nickel hydroxide

KW - Water oxidation

UR - https://www.scopus.com/pages/publications/85031498196

U2 - 10.1016/j.apsusc.2017.09.196

DO - 10.1016/j.apsusc.2017.09.196

M3 - 文章

AN - SCOPUS:85031498196

SN - 0169-4332

VL - 433

SP - 88

EP - 93

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Free-standing, flexible β-Ni(OH) ₂ /electrochemically-exfoliated graphene film electrode for efficient oxygen evolution

Abstract

Keywords

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