Efficient overall water splitting using nickel boride-based electrocatalysts

Jie Lao; Dong Li; Chunli Jiang; Rong Luo; Hui Peng; Ruijuan Qi; Hechun Lin; Rong Huang; Geoffrey I.N. Waterhouse; Chunhua Luo

doi:10.1016/j.ijhydene.2020.07.171

Efficient overall water splitting using nickel boride-based electrocatalysts

Jie Lao, Dong Li, Chunli Jiang, Rong Luo, Hui Peng, Ruijuan Qi, Hechun Lin, Rong Huang, Geoffrey I.N. Waterhouse, Chunhua Luo

School of Physics and Electronic Science

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

35 Scopus citations

Abstract

Currently there is tremendous interest in the discovery of low cost and efficient electrocatalysts for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). In this work, iron-doped nickel boride (Fe_xNi_1-xB) and nickel boride (NiB) were successfully grown on 3D self-supporting graphene (SSG) electrodes via a one-step reduction approach. The Fe_0.2Ni_0.8B/SSG electrode required a very low overpotential of only 263 mV for OER (the best OER activity achieved to date for a metal boride). NiB/SSG showed modest OER performance but excellent HER activity. A water electrolyzer comprising Fe_0.2Ni_0.8B/SSG and NiB/SSG delivered a current density of 10 mA cm⁻² at a voltage of only 1.62 V. Further, the Fe_0.2Ni_0.8B/SSG and NiB/SSG catalysts showed excellent stability with no deactivation observed over 14 h of testing. Results demonstrate that nickel boride-based electrocatalysts are promising lost cost alternatives to precious metal-based electrocatalysts for OER, HER and overall water splitting.

Original language	English
Pages (from-to)	28616-28625
Number of pages	10
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	53
DOIs	https://doi.org/10.1016/j.ijhydene.2020.07.171
State	Published - 30 Oct 2020

Keywords

HER
Iron doping
Nickel boride
OER
Overall water splitting
Self-supporting graphene

UN SDGs

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

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10.1016/j.ijhydene.2020.07.171

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title = "Efficient overall water splitting using nickel boride-based electrocatalysts",

abstract = "Currently there is tremendous interest in the discovery of low cost and efficient electrocatalysts for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). In this work, iron-doped nickel boride (FexNi1-xB) and nickel boride (NiB) were successfully grown on 3D self-supporting graphene (SSG) electrodes via a one-step reduction approach. The Fe0.2Ni0.8B/SSG electrode required a very low overpotential of only 263 mV for OER (the best OER activity achieved to date for a metal boride). NiB/SSG showed modest OER performance but excellent HER activity. A water electrolyzer comprising Fe0.2Ni0.8B/SSG and NiB/SSG delivered a current density of 10 mA cm−2 at a voltage of only 1.62 V. Further, the Fe0.2Ni0.8B/SSG and NiB/SSG catalysts showed excellent stability with no deactivation observed over 14 h of testing. Results demonstrate that nickel boride-based electrocatalysts are promising lost cost alternatives to precious metal-based electrocatalysts for OER, HER and overall water splitting.",

keywords = "HER, Iron doping, Nickel boride, OER, Overall water splitting, Self-supporting graphene",

author = "Jie Lao and Dong Li and Chunli Jiang and Rong Luo and Hui Peng and Ruijuan Qi and Hechun Lin and Rong Huang and Waterhouse, \{Geoffrey I.N.\} and Chunhua Luo",

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year = "2020",

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day = "30",

doi = "10.1016/j.ijhydene.2020.07.171",

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TY - JOUR

T1 - Efficient overall water splitting using nickel boride-based electrocatalysts

AU - Lao, Jie

AU - Li, Dong

AU - Jiang, Chunli

AU - Luo, Rong

AU - Peng, Hui

AU - Qi, Ruijuan

AU - Lin, Hechun

AU - Huang, Rong

AU - Waterhouse, Geoffrey I.N.

AU - Luo, Chunhua

PY - 2020/10/30

Y1 - 2020/10/30

N2 - Currently there is tremendous interest in the discovery of low cost and efficient electrocatalysts for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). In this work, iron-doped nickel boride (FexNi1-xB) and nickel boride (NiB) were successfully grown on 3D self-supporting graphene (SSG) electrodes via a one-step reduction approach. The Fe0.2Ni0.8B/SSG electrode required a very low overpotential of only 263 mV for OER (the best OER activity achieved to date for a metal boride). NiB/SSG showed modest OER performance but excellent HER activity. A water electrolyzer comprising Fe0.2Ni0.8B/SSG and NiB/SSG delivered a current density of 10 mA cm−2 at a voltage of only 1.62 V. Further, the Fe0.2Ni0.8B/SSG and NiB/SSG catalysts showed excellent stability with no deactivation observed over 14 h of testing. Results demonstrate that nickel boride-based electrocatalysts are promising lost cost alternatives to precious metal-based electrocatalysts for OER, HER and overall water splitting.

AB - Currently there is tremendous interest in the discovery of low cost and efficient electrocatalysts for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). In this work, iron-doped nickel boride (FexNi1-xB) and nickel boride (NiB) were successfully grown on 3D self-supporting graphene (SSG) electrodes via a one-step reduction approach. The Fe0.2Ni0.8B/SSG electrode required a very low overpotential of only 263 mV for OER (the best OER activity achieved to date for a metal boride). NiB/SSG showed modest OER performance but excellent HER activity. A water electrolyzer comprising Fe0.2Ni0.8B/SSG and NiB/SSG delivered a current density of 10 mA cm−2 at a voltage of only 1.62 V. Further, the Fe0.2Ni0.8B/SSG and NiB/SSG catalysts showed excellent stability with no deactivation observed over 14 h of testing. Results demonstrate that nickel boride-based electrocatalysts are promising lost cost alternatives to precious metal-based electrocatalysts for OER, HER and overall water splitting.

KW - HER

KW - Iron doping

KW - Nickel boride

KW - OER

KW - Overall water splitting

KW - Self-supporting graphene

UR - https://www.scopus.com/pages/publications/85089395927

U2 - 10.1016/j.ijhydene.2020.07.171

DO - 10.1016/j.ijhydene.2020.07.171

M3 - 文章

AN - SCOPUS:85089395927

SN - 0360-3199

VL - 45

SP - 28616

EP - 28625

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 53

ER -

Efficient overall water splitting using nickel boride-based electrocatalysts

Abstract

Keywords

UN SDGs

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