Strained W(SexS1–x)2 Nanoporous Films for Highly Efficient Hydrogen Evolution
| Autor: | Le Zhou, Ruquan Ye, Yang Yang, Kun Liang, Yong Yan, Zhao Li, Yongho Sohn, Yilun Li, Kyle Marcus, Nina Orlovskaya, Limin Guo |
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| Rok vydání: | 2017 |
| Předmět: |
Tafel equation
Materials science Renewable Energy Sustainability and the Environment Nanoporous Energy Engineering and Power Technology Nanotechnology 02 engineering and technology Chemical vapor deposition Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Electron transfer Fuel Technology Chemical engineering Chemistry (miscellaneous) Materials Chemistry 0210 nano-technology Ternary operation Hydrogen production |
| Zdroj: | ACS Energy Letters. 2:1315-1320 |
| ISSN: | 2380-8195 |
| Popis: | A W(SexS1–x)2 nanoporous architecture (NPA) was developed by facile anodic and chemical vapor deposition treatments. The ternary W(SexS1–x)2 NPA offers significant advantages toward high-efficiency hydrogen generation: (i) Nanoporous morphology provides more electrochemically active sites to split water. (ii) Lattice mismatch and disordering in the mix-phased W(SexS1–x)2 film introduce more defects to enhance the catalytic activity. (iii) Conducting 1T phase formed in the strained W(SexS1–x)2 facilitates the electron transfer during catalytic reactions. Therefore, an onset overpotential of 45 mV and a Tafel slope of 59 mV dec–1 were achieved using the as-prepared W(SexS1–x)2 NPA. |
| Databáze: | OpenAIRE |
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