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: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

192 Citations (Scopus)

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 mA cm^-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
Pages (from-to)	472-477
Journal	ChemSusChem
Volume	9
Issue number	5
Online published	26 Jan 2016
DOIs	https://doi.org/10.1002/cssc.201501599
Publication status	Published - 8 Mar 2016
Externally published	Yes

Research Keywords

cobalt phosphide
electrocatalysts
hydrogen evolution
nanoarrays
oxygen evolution

UN SDGs

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

Access Output

10.1002/cssc.201501599

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{e0479159fe824b6c9193a2bc583a2782,

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 mA cm-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",

year = "2016",

month = mar,

day = "8",

doi = "10.1002/cssc.201501599",

language = "English",

volume = "9",

pages = "472--477",

journal = "ChemSusChem",

issn = "1864-5631",

publisher = "Wiley-VCH Verlag GmbH",

number = "5",

}

TY - JOUR

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 mA cm-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 mA cm-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

UR - http://www.scopus.com/inward/record.url?scp=84959317811&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84959317811&origin=recordpage

U2 - 10.1002/cssc.201501599

DO - 10.1002/cssc.201501599

M3 - RGC 21 - Publication in refereed journal

C2 - 26811938

SN - 1864-5631

VL - 9

SP - 472

EP - 477

JO - ChemSusChem

JF - ChemSusChem

IS - 5

ER -

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

Abstract

Research Keywords

UN SDGs

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this