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Formic acid electro-catalytic oxidation at high temperature in supporting electrolyte free system: Mechanism study and catalyst stability

机译:支持无电解质体系中甲酸的高温电催化氧化:机理研究和催化剂稳定性

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摘要

As a potential fuel for proton exchange membrane fuel cell, formic acid (FA) is easily decomposed on palladium (Pd) based catalysts, which are also the most effective and commonly used FA electro-oxidation catalysts in the direct formic acid fuel cell (DFAFC). Here we try to study the interaction between these two reactions in a supporting electrolyte free electrochemical cell. Considering the operation condition in the anode of DFAFC, influence of FA decomposition on FA electro-oxidation is detected and confirmed by mechanistic study. By doping platinum (Pt) into Pd, stability of the FA electro-oxidation can be extremely improved at fuel cell operation temperature. (C) 2015 Elsevier B.V. All rights reserved.
机译:作为质子交换膜燃料电池的潜在燃料,甲酸(FA)易于在钯(Pd)基催化剂上分解,这也是直接甲酸燃料电池(DFAFC)中最有效和最常用的FA电氧化催化剂)。在这里,我们尝试研究支持无电解质的电化学电池中这两个反应之间的相互作用。考虑到DFAFC阳极的工作条件,通过机理研究发现并证实了FA分解对FA电氧化的影响。通过将铂(Pt)掺杂到Pd中,可以在燃料电池工作温度下极大地改善FA电氧化的稳定性。 (C)2015 Elsevier B.V.保留所有权利。

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