One-pot synthesis nickel sulfide/amorphous molybdenum sulfide nanosheets array on nickel foam as a robust oxygen evolution reaction electrocatalyst
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (China)
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)
To design highly efficient and low-cost electrocatalysts for oxygen evolution reaction (OER) is a great challenge for electrochemical water splitting. Here we introduce a simple and cost-effective strategy for one-step synthesis of a three-dimensional Ni{sub 3}S{sub 2}/MoS{sub X} (x is close to 3) nanosheets on Ni foam (NF) via a sovelthermal reaction. The electrochemical performance of the Ni{sub 3}S{sub 2}/MoS{sub X} nanosheets on NF has been investigated and exhibits superior OER electrocatalytic activity as well as excellent electrochemical durability. As a novel non-noble-metal OER catalyst operating in basic electrolytes, this 3D cathode exhibits an onset overpotential of as low as 165 mV, a Tafel slope of 67.5 mV dec{sup −1} and remarkable long-term stability. This catalyst maintains its catalytic activity for at least 14 h and only affords 50, 100, and 150 mA cm{sup −2} OER current densities at overpotentials of 215 mV, 265 mV and 305 mV respectively. - Highlights: • The Ni{sub 3}S{sub 2}/MoS{sub X} nanosheets/NF electrode synthesized via a simple and cost-effective sovelthermal reaction. • The Ni{sub 3}S{sub 2}/MoS{sub X} nanosheets were directly grown on the conductive Ni foam with a high surface area, superior electrical conductivity and excellent. mechanical flexibility as an electrode material for oxygen evolution reaction in basic media. • The Ni{sub 3}S{sub 2}/MoS{sub X} nanosheets/NF exhibits superior OER electrocatalytic activity as well as excellent electrochemical durability. - Graphical abstract: The Ni{sub 3}S{sub 2}/MoS{sub X} nanosheets were directly grown on the conductive Ni foam via a one-step sovelthermal reaction, such structure with a high surface area (high density of oxygen-evolution catalytic sites), facilitating conductivity, electron transfer as a high performance and extraordinary duration electrode material for oxygen evolution reaction in basic media. Display Omitted.
- OSTI ID:
- 22742072
- Journal Information:
- Journal of Solid State Chemistry, Vol. 256; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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