The Role of Water-Surface Interactions of Platinum Based Catalysts in Electrochemical Methanol Oxidation

被引：2

作者：

Hodnik, Nejc ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany

来源：

10TH ESEE: EUROPEAN SYMPOSIUM ON ELECTROCHEMICAL ENGINEERING | 2014年 / 41卷

关键词：

OXYGEN REDUCTION; ELECTRODE-KINETICS; AQUEOUS-SOLUTION; PARTICLE-SIZE; ZERO CHARGE; ELECTROOXIDATION; CO; REACTIVITY; INTERFACE; MECHANISM;

D O I：

10.3303/CET1441004

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Study focuses on the impact of potential of zero total charge (PZTC) determined with N2O reduction on different Pt-based catalysts in three important proton exchange membrane fuel cell (PEMFC) reactions, namely oxygen reduction (ORR), CO oxidation and methanol oxidation (MOR). The catalysts activities are correlated with a change in PZTC, hence with a change of structure and surface coverage of adsorbed water (and other adsorbed species). These correlations indicate that adsorbed water and its dissociation products (OHad) together with other adsorbed species govern the trend in the rates of the above reactions.

引用

页码：19 / 24

页数：6

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