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  Operando Insights on the Degradation Mechanisms of Rhenium doped Molybdenum Disulfide Nanocatalysts for Electrolyzer Applications

Aymerich Armengol, R., Vega Paredes, M., Mingers, A. M., Camuti, L., Kim, J., Bae, J., Efthimiopoulos, I., Sahu, R., Podjaski, F., Rabe, M., Scheu, C., Lim, J., & Zhang, S. (2023). Operando Insights on the Degradation Mechanisms of Rhenium doped Molybdenum Disulfide Nanocatalysts for Electrolyzer Applications. arXiv preprint arXiv:2309.08977.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-000D-B9B9-2 版のパーマリンク: https://hdl.handle.net/21.11116/0000-000D-B9C0-9
資料種別: 学術論文

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 作成者:
Aymerich Armengol, Raquel1, 著者           
Vega Paredes, Miguel1, 著者           
Mingers, Andrea Maria2, 著者           
Camuti, Luca3, 著者
Kim, Jeeung4, 著者
Bae, Jeongwook4, 著者
Efthimiopoulos, Ilias5, 著者           
Sahu, Rajib1, 著者           
Podjaski, Filip6, 著者
Rabe, Martin5, 著者           
Scheu, Christina1, 著者           
Lim, Joohyun4, 著者
Zhang, Siyuan1, 著者           
所属:
1Nanoanalytics and Interfaces, Independent Max Planck Research Groups, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2054294              
2Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
3Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany Department of Chemistry, University of Munich (LMU), Butenandtstraße 5–13 (D), 81377 Munich, Germany, ou_persistent22              
4Department of Chemistry, Institute for Molecular Science and Fusion Technology, Multidimensional Genomics Research Center, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea., ou_persistent22              
5Spectroscopy at Electrochemical Interfaces, Project Groups, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3291780              
6Department of Chemistry, Imperial College London, United Kingdom, ou_persistent22              

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 要旨: MoS2 nanostructures are promising catalysts for proton-exchange-membrane (PEM) electrolyzers to replace expensive noble metals. Their broadscale application demands high activity for the hydrogen evolution reaction (HER) as well as good durability. Doping in MoS2 is commonly applied to enhance the HER activity of MoS2-based nanocatalysts, but the effect of dopants in the electrochemical and structural stability is yet to be discussed. Herein, we correlate operando electrochemical measurements to the structural evolution of the materials down to the nanometric scale by identical location electron microscopy and spectroscopy. Different degradation mechanisms at first electrolyte contact, open circuit stabilization and HER conditions are identified for MoS2 nanocatalysts with and without Rhenium doping. Our results demonstrate that doping in MoS2 nanocatalysts can not only improve their HER activity, but also their stability. Doping of MoS2-based nanocatalysts is validated as a promising strategy to follow for the continuous improvement of high performance and durable PEM electrolyzers.

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言語: eng - English
 日付: 2023-09-1620232023
 出版の状態: 出版
 ページ: -
 出版情報: -
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 識別子(DOI, ISBNなど): arXiv: 2309.08977
 学位: -

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出版物名: arXiv preprint arXiv:2309.08977
種別: 学術雑誌
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