Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting

Xin Xiao; Dekang Huang; Richard Fu; Ming Wen; Xingxing Jiang; Xiaowei Lv; Man Li; Lin Gao; Shuangshuang Liu; Mingkui Wang; Chuan Zhao; Yan Shen

doi:10.1021/acsami.7b16430

Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting

Xin Xiao, Dekang Huang, Richard Fu, Ming Wen, Xingxing Jiang, Xiaowei Lv, Man Li, Lin Gao, Shuangshuang Liu, Mingkui Wang, Chuan Zhao, Yan Shen

Mathematics, Physics and Electrical Engineering

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Abstract

Developing high-active and low-cost bifunctional materials for catalyzing hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) holds pivotal role in water splitting. Therefore, we present a new strategy to form NiS/Ni2P heterostructures. The as-obtained NiS/Ni2P/CC requires overpotentials of 111 mV for the HER and 265 mV for the OER to reach a current density of 20 mA cm-2, outperforming their counterparts such as NiS and Ni2P under the same conditions. Additionally, the NiS/Ni2P/CC electrode requires a 1.67 V cell voltage to deliver 10 mA cm-2 in two-electrode electrolysis system, which is comparable to the cell using the benchmark Pt/C||RuO2 electrode. Detailed characterizations reveal that strong electronic interactions between NiS and Ni2P, abundant active sites, and smaller charge transfer resistance contribute to the improved HER and OER activity.

Original language	English
Pages (from-to)	4689-4696
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	5
Early online date	15 Jan 2018
DOIs	https://doi.org/10.1021/acsami.7b16430
Publication status	Published - 7 Feb 2018

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title = "Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting",

abstract = "Developing high-active and low-cost bifunctional materials for catalyzing hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) holds pivotal role in water splitting. Therefore, we present a new strategy to form NiS/Ni2P heterostructures. The as-obtained NiS/Ni2P/CC requires overpotentials of 111 mV for the HER and 265 mV for the OER to reach a current density of 20 mA cm-2, outperforming their counterparts such as NiS and Ni2P under the same conditions. Additionally, the NiS/Ni2P/CC electrode requires a 1.67 V cell voltage to deliver 10 mA cm-2 in two-electrode electrolysis system, which is comparable to the cell using the benchmark Pt/C||RuO2 electrode. Detailed characterizations reveal that strong electronic interactions between NiS and Ni2P, abundant active sites, and smaller charge transfer resistance contribute to the improved HER and OER activity.",

author = "Xin Xiao and Dekang Huang and Richard Fu and Ming Wen and Xingxing Jiang and Xiaowei Lv and Man Li and Lin Gao and Shuangshuang Liu and Mingkui Wang and Chuan Zhao and Yan Shen",

year = "2018",

month = feb,

day = "7",

doi = "10.1021/acsami.7b16430",

language = "English",

volume = "10",

pages = "4689--4696",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting

AU - Xiao, Xin

AU - Huang, Dekang

AU - Fu, Richard

AU - Wen, Ming

AU - Jiang, Xingxing

AU - Lv, Xiaowei

AU - Li, Man

AU - Gao, Lin

AU - Liu, Shuangshuang

AU - Wang, Mingkui

AU - Zhao, Chuan

AU - Shen, Yan

PY - 2018/2/7

Y1 - 2018/2/7

N2 - Developing high-active and low-cost bifunctional materials for catalyzing hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) holds pivotal role in water splitting. Therefore, we present a new strategy to form NiS/Ni2P heterostructures. The as-obtained NiS/Ni2P/CC requires overpotentials of 111 mV for the HER and 265 mV for the OER to reach a current density of 20 mA cm-2, outperforming their counterparts such as NiS and Ni2P under the same conditions. Additionally, the NiS/Ni2P/CC electrode requires a 1.67 V cell voltage to deliver 10 mA cm-2 in two-electrode electrolysis system, which is comparable to the cell using the benchmark Pt/C||RuO2 electrode. Detailed characterizations reveal that strong electronic interactions between NiS and Ni2P, abundant active sites, and smaller charge transfer resistance contribute to the improved HER and OER activity.

AB - Developing high-active and low-cost bifunctional materials for catalyzing hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) holds pivotal role in water splitting. Therefore, we present a new strategy to form NiS/Ni2P heterostructures. The as-obtained NiS/Ni2P/CC requires overpotentials of 111 mV for the HER and 265 mV for the OER to reach a current density of 20 mA cm-2, outperforming their counterparts such as NiS and Ni2P under the same conditions. Additionally, the NiS/Ni2P/CC electrode requires a 1.67 V cell voltage to deliver 10 mA cm-2 in two-electrode electrolysis system, which is comparable to the cell using the benchmark Pt/C||RuO2 electrode. Detailed characterizations reveal that strong electronic interactions between NiS and Ni2P, abundant active sites, and smaller charge transfer resistance contribute to the improved HER and OER activity.

U2 - 10.1021/acsami.7b16430

DO - 10.1021/acsami.7b16430

M3 - Article

SN - 1944-8244

VL - 10

SP - 4689

EP - 4696

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 5

ER -

Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting

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