Carbon encapsulated mixed-metal sulfide as proficient electrocatalyst for hydrogen evolution reaction
| Autor: | Mingsong Wang, Nimra Aslam, Asma Shaheen, Shahid Hussain, Muhammad Sufyan Javed, Guanjun Qiao, Guiwu Liu, Yingyi Zhang, Nabi Ullah |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
chemistry.chemical_classification Materials science Sulfide Nanoparticle chemistry.chemical_element Overpotential Condensed Matter Physics Electrocatalyst 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Catalysis chemistry Chemical engineering 0103 physical sciences Electrode Electrical and Electronic Engineering Pyrolysis Carbon |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:14762-14771 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-01848-2 |
| Popis: | Proficient electrocatalyst for hydrogen evolution reaction (HER) synthesized via a single-step, simple and low-temperature pyrolysis method. The mixed metal sulfide catalyst Co9S8/NiS@C shows irregular multi-shaped structure having small pores covered with carbon layers. The as-prepared Co9S8/NiS@C composites are made up of very small intermingled nanoparticles. The tiny nanoparticle contains large surface area that serves as an active-site for excellent HER performances. The Co9S8/NiS@C electrode is tested under alkaline solution performs overpotential (vs. RHE) of 0.28 V at current density of 10 mA cm−2. It exhibits a low Rct with an excellent and continuous stability for 10 h. The excellent HER performances of Co9S8/NiS@C are attributed to shape, size, and crystal structure of mixed metal sulfide and small surface pores that provide abundant active sites for electrocatalysis reaction. |
| Databáze: | OpenAIRE |
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