One-pot synthesis of nickel sulfide with sulfur powder as sulfur source in solution and their electrochemical properties for hydrogen evolution reaction
| Autor: | Qingsong Dong, Zhiqiang Fang, Yizhen Zou, Zhaomin Hao, Yuqing Wang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Tafel equation
Nickel sulfide Inorganic chemistry Exchange current density chemistry.chemical_element 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Sulfur 0104 chemical sciences Catalysis Inorganic Chemistry Nickel chemistry.chemical_compound chemistry Materials Chemistry Water splitting Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Inorganic Chemistry Communications. 79:1-4 |
| ISSN: | 1387-7003 |
| Popis: | Among low-cost and earth-abundant elements, the nickel-based HER catalysts, particularly nickel sulfide, are considered as one of the most promising candidates in this field. In this paper, a kind of spherical nickel sulfide material was obtained using nickel acetate and sulfur powder as precursors by one-pot synthesis. The use of sulfur powder as sulfur source with solution-based method will enable the synthesis of metal sulfides to be more simple and capable of mass production. In addition, the as-synthesized nickel sulfide exhibits an onset overpotential of as low as 25 mV, a Tafel slope of 90 mV dec− 1, and an exchange current density of 0.44 mA cm− 2. Furthermore, this catalyst maintains its catalytic activity for at least 25 h and only requires overpotentials of 42 and 113 mV to attain current densities of 2 and 10 mA cm− 2, respectively. The electrocatalytic performance is promising for applications as non-noble-metal HER catalyst with water splitting for hydrogen production. |
| Databáze: | OpenAIRE |
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