One-step construction of porous Ni/Co metal/oxide nanocubes for highly efficient oxygen evolution

Binling Chen; Zhuxian Yang; Qijian Niu; Hong Chang; Guiping Ma; Yanqiu Zhu; Yongde Xia

doi:10.1016/j.elecom.2018.07.016

One-step construction of porous Ni/Co metal/oxide nanocubes for highly efficient oxygen evolution

Binling Chen, Zhuxian Yang, Qijian Niu, Hong Chang, Guiping Ma, Yanqiu Zhu, Yongde Xia^*

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

A one-step method to synthesize porous Ni/Co metal/oxide as highly efficient oxygen evolution reaction (OER) catalysts is presented. Using Ni-Co Prussian blue analogue as both the precursor and the template, a simple oxidation in air at low temperatures results in the formation of Ni/Co metal/oxide nanocubes with fine particles. The optimized porous NiCoO_x-400 exhibits excellent OER activity with a low onset of 1.40 V (vs. RHE), an overpotential of 280 mV at 10 mA/cm² and a small Tafel slope of 74 mV/decade in 0.1 M KOH solution, significantly superior to those of the state-of-the-art noble-metal OER catalyst IrO₂/C. This approach offers the potential to generate highly active and low-cost OER catalysts on a large scale.

Original language	English
Pages (from-to)	191-196
Number of pages	6
Journal	Electrochemistry Communications
Volume	93
DOIs	https://doi.org/10.1016/j.elecom.2018.07.016
Publication status	Published - Aug 2018
Externally published	Yes

Keywords

Electrocatalyst
Nanocubes: Prussian blue analogue
Ni/Co metal oxide
Oxygen evolution reaction

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10.1016/j.elecom.2018.07.016

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@article{8790f387d4684deabf96766b1a41de27,

title = "One-step construction of porous Ni/Co metal/oxide nanocubes for highly efficient oxygen evolution",

abstract = "A one-step method to synthesize porous Ni/Co metal/oxide as highly efficient oxygen evolution reaction (OER) catalysts is presented. Using Ni-Co Prussian blue analogue as both the precursor and the template, a simple oxidation in air at low temperatures results in the formation of Ni/Co metal/oxide nanocubes with fine particles. The optimized porous NiCoOx-400 exhibits excellent OER activity with a low onset of 1.40 V (vs. RHE), an overpotential of 280 mV at 10 mA/cm2 and a small Tafel slope of 74 mV/decade in 0.1 M KOH solution, significantly superior to those of the state-of-the-art noble-metal OER catalyst IrO2/C. This approach offers the potential to generate highly active and low-cost OER catalysts on a large scale.",

keywords = "Electrocatalyst, Nanocubes: Prussian blue analogue, Ni/Co metal oxide, Oxygen evolution reaction",

author = "Binling Chen and Zhuxian Yang and Qijian Niu and Hong Chang and Guiping Ma and Yanqiu Zhu and Yongde Xia",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = aug,

doi = "10.1016/j.elecom.2018.07.016",

language = "English",

volume = "93",

pages = "191--196",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - One-step construction of porous Ni/Co metal/oxide nanocubes for highly efficient oxygen evolution

AU - Chen, Binling

AU - Yang, Zhuxian

AU - Niu, Qijian

AU - Chang, Hong

AU - Ma, Guiping

AU - Zhu, Yanqiu

AU - Xia, Yongde

PY - 2018/8

Y1 - 2018/8

N2 - A one-step method to synthesize porous Ni/Co metal/oxide as highly efficient oxygen evolution reaction (OER) catalysts is presented. Using Ni-Co Prussian blue analogue as both the precursor and the template, a simple oxidation in air at low temperatures results in the formation of Ni/Co metal/oxide nanocubes with fine particles. The optimized porous NiCoOx-400 exhibits excellent OER activity with a low onset of 1.40 V (vs. RHE), an overpotential of 280 mV at 10 mA/cm2 and a small Tafel slope of 74 mV/decade in 0.1 M KOH solution, significantly superior to those of the state-of-the-art noble-metal OER catalyst IrO2/C. This approach offers the potential to generate highly active and low-cost OER catalysts on a large scale.

AB - A one-step method to synthesize porous Ni/Co metal/oxide as highly efficient oxygen evolution reaction (OER) catalysts is presented. Using Ni-Co Prussian blue analogue as both the precursor and the template, a simple oxidation in air at low temperatures results in the formation of Ni/Co metal/oxide nanocubes with fine particles. The optimized porous NiCoOx-400 exhibits excellent OER activity with a low onset of 1.40 V (vs. RHE), an overpotential of 280 mV at 10 mA/cm2 and a small Tafel slope of 74 mV/decade in 0.1 M KOH solution, significantly superior to those of the state-of-the-art noble-metal OER catalyst IrO2/C. This approach offers the potential to generate highly active and low-cost OER catalysts on a large scale.

KW - Electrocatalyst

KW - Nanocubes: Prussian blue analogue

KW - Ni/Co metal oxide

KW - Oxygen evolution reaction

UR - https://www.scopus.com/pages/publications/85050002026

U2 - 10.1016/j.elecom.2018.07.016

DO - 10.1016/j.elecom.2018.07.016

M3 - Article

AN - SCOPUS:85050002026

SN - 1388-2481

VL - 93

SP - 191

EP - 196

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

One-step construction of porous Ni/Co metal/oxide nanocubes for highly efficient oxygen evolution

Abstract

Keywords

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