Revealing the Contribution of Individual Factors to Hydrogen Evolution Reaction Catalytic Activity

Revealing the Contribution of Individual Factors to Hydrogen Evolution Reaction Catalytic Activity

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 18 vom: 11. Mai, Seite e1706076
1. Verfasser: Zhou, Yu (VerfasserIn)
Weitere Verfasser: Silva, Jose Luis, Woods, John M, Pondick, Joshua V, Feng, Qingliang, Liang, Zhixiu, Liu, Wen, Lin, Li, Deng, Bingchen, Brena, Barbara, Xia, Fengnian, Peng, Hailin, Liu, Zhongfan, Wang, Hailiang, Araujo, Carlos Moyses, Cha, Judy J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 2D TMD materials electrochemical microreactors hydrogen evolution reaction individual factors overall performance
Beschreibung
Zusammenfassung:© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
For the electrochemical hydrogen evolution reaction (HER), the electrical properties of catalysts can play an important role in influencing the overall catalytic activity. This is particularly important for semiconducting HER catalysts such as MoS2 , which has been extensively studied over the last decade. Herein, on-chip microreactors on two model catalysts, semiconducting MoS2 and semimetallic WTe2 , are employed to extract the effects of individual factors and study their relations with the HER catalytic activity. It is shown that electron injection at the catalyst/current collector interface and intralayer and interlayer charge transport within the catalyst can be more important than thermodynamic energy considerations. For WTe2 , the site-dependent activities and the relations of the pure thermodynamics to the overall activity are measured and established, as the microreactors allow precise measurements of the type and area of the catalytic sites. The approach presents opportunities to study electrochemical reactions systematically to help establish rational design principles for future electrocatalysts
Beschreibung:Date Completed 01.08.2018
Date Revised 01.10.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201706076