Electrochemical Quartz Microbalance for Studying Electrodeposited Pt Catalysts for Methanol Oxidation Reaction
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Le résumé fourni par la source
Pt catalysts are investigated for methanol oxidation in direct methanol fuel cells, utilizing the electrochemical quartz microbalance method (EQCM) with exceptional resolution and sensitivity. Pt catalysts were deposited onto the gas-diffusion layer of carbon using stationary potential electrodeposition. Physical characterization and electrochemical tests were performed. SEM results showed that Pt presented dendrite crystals with nanoscale facets. Cyclic voltammetry (CV) demonstrated that the current density for the methanol oxidation reaction highly reached 1020 mA·cm−2 for the deposited Pt catalyst by EQCM. The dendrite crystal structures of deposited Pt provide much area for high catalytic activity. It found that the peak density of the Pt catalysts for the methanol oxidation reaction decreased after five cycles. Furthermore, the response frequency for the adsorption of the deposited Pt catalysts was investigated using EQCM and compared with commercial PtRu catalysts. The results showed that the response frequency of the Pt catalysts decreased more rapidly than that of the PtRu catalysts. It is possible for the adsorption of small organic molecules on Pt catalysts to occur during the methanol electro-oxidation with COad intermediates. The reaction mechanism is preliminarily discussed by the electrochemical measurement combined with EQCM.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Electrochemical Quartz Microbalance for Studying Electrodeposited Pt Catalysts for Methanol Oxidation Reaction
- Date Crossref
- 03/04/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Suzhou University pays non établi dans la noticeUniversité ou école supérieure
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North China Electric Power University pays non établi dans la noticeUniversité ou école supérieure
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Wuyi University Fujian Provincial Key Laboratory of Eco-Industrial Green Technology pays non établi dans la noticeUniversité ou école supérieure
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School of Mechanical and Electronic Engineering pays non établi dans la noticeUniversité ou école supérieure
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School of Energy Power and Mechanical Engineering Key Laboratory of Power Station Energy Transfer Conversion and System of MOE pays non établi dans la noticeUniversité ou école supérieure
Suzhou University, North China Electric Power University et Fujian Provincial Key Laboratory of Eco-Industrial Green Technology — Wuyi University, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.