Fe doped skutterudite-type CoP3 nanoneedles as efficient electrocatalysts for hydrogen and oxygen evolution in alkaline media

Lei Lin; Q. Fu; Yaping Han; Jianing Wang; Xingquan Zhang; Yaohui Zhang; C. Hu; Zhiguo Liu; Yu Sui; Xianjie Wang

doi:10.1016/j.jallcom.2019.151767

Fe doped skutterudite-type CoP₃ nanoneedles as efficient electrocatalysts for hydrogen and oxygen evolution in alkaline media

Lei Lin
, Q. Fu^*
, Yaping Han
, Jianing Wang
, Xingquan Zhang
, Yaohui Zhang
, C. Hu
, Zhiguo Liu
, Yu Sui
, Xianjie Wang

^*Corresponding author for this work

Northeast Forestry University
School of Physics, Harbin Institute of Technology
Southwest University of Science and Technology

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

19 Scopus citations

Abstract

Non-noble-metal catalysts are the key point for the development of water splitting to produce hydrogen, a process which can be used to overcome the energy crisis. In this paper, we investigated water splitting in alkaline environments using skutterudite-type cobalt phosphide (CoP₃) nanoneedle arrays fabricated on carbon cloth. A moderate amount of iron is doped into pristine CoP₃, and the resulting Co_1−xFe_xP₃ shows a significant enhancement for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) compared with the pristine CoP₃. Co_0.7Fe_0.3P₃ displays the best HER performance, with an overpotential of 167 mV vs. reversible hydrogen electrode (RHE) to reach a current density of 10 mA cm⁻² (η₁₀) and a Tafel slope of 65.1 mV dec⁻¹. Co_0.7Fe_0.3P₃ also shows the best OER catalytic performance, reaching a current density of 50 mA cm⁻² (η₅₀) at an overpotential of 330 mV vs. RHE. Our results indicate that simple second metal element doping is an effective way to improve the HER and OER performance of skutterudite-type electrocatalysts in alkaline media.

Original language	English
Article number	151767
Journal	Journal of Alloys and Compounds
Volume	808
DOIs	https://doi.org/10.1016/j.jallcom.2019.151767
State	Published - 5 Nov 2019
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Catalyst
Doping
Electrocatalysis
Water splitting

Access to Document

10.1016/j.jallcom.2019.151767

Cite this

@article{02e2738007ab467eae7cad61bd0a49d4,

title = "Fe doped skutterudite-type CoP3 nanoneedles as efficient electrocatalysts for hydrogen and oxygen evolution in alkaline media",

abstract = "Non-noble-metal catalysts are the key point for the development of water splitting to produce hydrogen, a process which can be used to overcome the energy crisis. In this paper, we investigated water splitting in alkaline environments using skutterudite-type cobalt phosphide (CoP3) nanoneedle arrays fabricated on carbon cloth. A moderate amount of iron is doped into pristine CoP3, and the resulting Co1−xFexP3 shows a significant enhancement for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) compared with the pristine CoP3. Co0.7Fe0.3P3 displays the best HER performance, with an overpotential of 167 mV vs. reversible hydrogen electrode (RHE) to reach a current density of 10 mA cm−2 (η10) and a Tafel slope of 65.1 mV dec−1. Co0.7Fe0.3P3 also shows the best OER catalytic performance, reaching a current density of 50 mA cm−2 (η50) at an overpotential of 330 mV vs. RHE. Our results indicate that simple second metal element doping is an effective way to improve the HER and OER performance of skutterudite-type electrocatalysts in alkaline media.",

keywords = "Catalyst, Doping, Electrocatalysis, Water splitting",

author = "Lei Lin and Q. Fu and Yaping Han and Jianing Wang and Xingquan Zhang and Yaohui Zhang and C. Hu and Zhiguo Liu and Yu Sui and Xianjie Wang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = nov,

day = "5",

doi = "10.1016/j.jallcom.2019.151767",

language = "英语",

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journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Fe doped skutterudite-type CoP3 nanoneedles as efficient electrocatalysts for hydrogen and oxygen evolution in alkaline media

AU - Lin, Lei

AU - Fu, Q.

AU - Han, Yaping

AU - Wang, Jianing

AU - Zhang, Xingquan

AU - Zhang, Yaohui

AU - Hu, C.

AU - Liu, Zhiguo

AU - Sui, Yu

AU - Wang, Xianjie

PY - 2019/11/5

Y1 - 2019/11/5

N2 - Non-noble-metal catalysts are the key point for the development of water splitting to produce hydrogen, a process which can be used to overcome the energy crisis. In this paper, we investigated water splitting in alkaline environments using skutterudite-type cobalt phosphide (CoP3) nanoneedle arrays fabricated on carbon cloth. A moderate amount of iron is doped into pristine CoP3, and the resulting Co1−xFexP3 shows a significant enhancement for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) compared with the pristine CoP3. Co0.7Fe0.3P3 displays the best HER performance, with an overpotential of 167 mV vs. reversible hydrogen electrode (RHE) to reach a current density of 10 mA cm−2 (η10) and a Tafel slope of 65.1 mV dec−1. Co0.7Fe0.3P3 also shows the best OER catalytic performance, reaching a current density of 50 mA cm−2 (η50) at an overpotential of 330 mV vs. RHE. Our results indicate that simple second metal element doping is an effective way to improve the HER and OER performance of skutterudite-type electrocatalysts in alkaline media.

AB - Non-noble-metal catalysts are the key point for the development of water splitting to produce hydrogen, a process which can be used to overcome the energy crisis. In this paper, we investigated water splitting in alkaline environments using skutterudite-type cobalt phosphide (CoP3) nanoneedle arrays fabricated on carbon cloth. A moderate amount of iron is doped into pristine CoP3, and the resulting Co1−xFexP3 shows a significant enhancement for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) compared with the pristine CoP3. Co0.7Fe0.3P3 displays the best HER performance, with an overpotential of 167 mV vs. reversible hydrogen electrode (RHE) to reach a current density of 10 mA cm−2 (η10) and a Tafel slope of 65.1 mV dec−1. Co0.7Fe0.3P3 also shows the best OER catalytic performance, reaching a current density of 50 mA cm−2 (η50) at an overpotential of 330 mV vs. RHE. Our results indicate that simple second metal element doping is an effective way to improve the HER and OER performance of skutterudite-type electrocatalysts in alkaline media.

KW - Catalyst

KW - Doping

KW - Electrocatalysis

KW - Water splitting

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U2 - 10.1016/j.jallcom.2019.151767

DO - 10.1016/j.jallcom.2019.151767

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