Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting

Xiao, Xin, Huang, Dekang, Fu, Yong Qing, Wen, Ming, Jiang, Xingxing, Lv, Xiaowei, Li, Man, Gao, Lin, Liu, Shuangshuang, Wang, Mingkui, Zhao, Chuan and Shen, Yan (2018) Engineering NiS/Ni2P Heterostructures for Efficient Electrocatalytic Water Splitting. ACS Applied Materials & Interfaces, 10 (5). pp. 4689-4696. ISSN 1944-8244

[img] Text (Article)
acsami Fu 2018.pdf - Accepted Version
Restricted to Repository staff only until 15 January 2019.

Download (1MB) | Request a copy
Official URL: https://doi.org/10.1021/acsami.7b16430

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.

Item Type: Article
Uncontrolled Keywords: bifunctional electrocatalyst; heterostructures; nickel phosphide; nickel sulfide; overall water splitting
Subjects: F200 Materials Science
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 22 Jan 2018 15:31
Last Modified: 16 Apr 2018 17:54
URI: http://nrl.northumbria.ac.uk/id/eprint/33155

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence