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Local Impact of Pt Nanodeposits on Ionomer Decomposition in Polymer Electrolyte Membranes

机译:Pt纳米粒子对聚合物电解质膜离聚物分解的局部影响

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Based on recent theoretical studies, we designed a multistep experimental protocol to understand the impact of environmental conditions around Pt nanodeposits on membrane chemical degradation. The first experiment probes the local potential at a Pt microelectrode for different rates of permeation of hydrogen and oxygen gases from anode and cathode side. The subsequent degradation experiment utilizes the local conditions taken from the first experiment to analyze local rates of ionomer degradation. The rate of ionomer decomposition is significantly enhanced in the anodic H-2-rich membrane region, which can be explained with the markedly increased amount of H2O2 formation at Pt nanodeposits in this region.
机译:基于近期理论研究,我们设计了一种多步骤实验方案,以了解PT纳多到膜化学降解围绕Pt纳米蛋白周围的环境条件的影响。 第一实验探测Pt微电极的局部电位,用于阳极和阴极侧的氢气和氧气渗透的不同速率。 随后的降解实验利用了从第一个实验中取出的局部条件来分析离聚物降解的局部速率。 在富含阳极H-2的膜区中,离聚物分解的速率显着增强,这可以用该区域的Pt纳米脂素的显着增加的H2O2形成量来解释。

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