Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

Peng Wang; Fang Song; Rose Amal; Yun Hau Ng; Xile Hu

doi:10.1002/cssc.201501599

Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

Peng Wang, Fang Song^*, Rose Amal, Yun Hau Ng, Xile Hu

^*Corresponding author for this work

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

189 Scopus citations

Abstract

Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10 mAcm^-2 at an overpotential of 281 mV for OER and 95 mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoO_x, which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.

Original language	English (US)
Pages (from-to)	472-477
Number of pages	6
Journal	CHEMSUSCHEM
Volume	9
Issue number	5
DOIs	https://doi.org/10.1002/cssc.201501599
State	Published - Mar 8 2016

Keywords

cobalt phosphide
electrocatalysts
hydrogen evolution
nanoarrays
oxygen evolution

ASJC Scopus subject areas

Environmental Chemistry
General Chemical Engineering
General Materials Science
General Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/cssc.201501599

Cite this

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title = "Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth",

abstract = "Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10 mAcm-2 at an overpotential of 281 mV for OER and 95 mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoOx, which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.",

keywords = "cobalt phosphide, electrocatalysts, hydrogen evolution, nanoarrays, oxygen evolution",

author = "Peng Wang and Fang Song and Rose Amal and Ng, {Yun Hau} and Xile Hu",

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year = "2016",

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doi = "10.1002/cssc.201501599",

language = "English (US)",

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T1 - Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

AU - Wang, Peng

AU - Song, Fang

AU - Amal, Rose

AU - Ng, Yun Hau

AU - Hu, Xile

PY - 2016/3/8

Y1 - 2016/3/8

N2 - Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10 mAcm-2 at an overpotential of 281 mV for OER and 95 mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoOx, which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.

AB - Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10 mAcm-2 at an overpotential of 281 mV for OER and 95 mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoOx, which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.

KW - cobalt phosphide

KW - electrocatalysts

KW - hydrogen evolution

KW - nanoarrays

KW - oxygen evolution

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DO - 10.1002/cssc.201501599

M3 - Article

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ER -

Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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