2023 Fiscal Year Final Research Report
Influence of carbon substrates on the synthesis of tungsten carbides and their catalytic activities for hydrogen evolution reaction.
| Project/Area Number |
21K05142
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 34030:Green sustainable chemistry and environmental chemistry-related
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| Research Institution | Gunma University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
小林 里江子 群馬大学, 大学院理工学府, 助教 (70600013)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | カーボン担体 / 窒素ドープ / 炭化タングステン / 水素発生触媒 / 材料反応工学 |
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| Outline of Final Research Achievements |
This study investigated the reaction of WxC/C catalyst for hydrogen evolution (HER) with WO3 and carbon to determine the effect of nitrogen doping of the carbon source on the HER activity. Nitrogen doping maintained the highly dispersed state of WxC up to high loadings, resulting in high HER catalytic activity, which was explained by the action of the nitrogen doping of lowering the onset deposition temperature of the metallic tungsten particles with high melting temperature. Hydrogen evolution tests using a cell equipped with gas diffusion electrode revealed an increased hydrogen evolution rate with increasing WxC catalyst loading. However, the HER activity was not enough compared to the Pt catalysts, indicating the need for further increase in activity.
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| Free Research Field |
無機材料科学、電気化学、反応工学、触媒化学
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| Academic Significance and Societal Importance of the Research Achievements |
再生可能エネルギーを用いた水電解は、水素社会を構築する上での重要な技術である。本研究では、水素発生用炭化タングステン触媒の高活性化のための材料科学的条件を明らかにし、かつ実際の利用形態に近いガス拡散セルを用いた評価より、現状の問題点を明らかにした。これらの成果は、当該触媒開発におけるカーボン材料の優位性を示すのみならず、水素社会実現に拍車をかける成果である
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