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Cascade Adsorption Mechanism to Overcome the Activation Energy Barrier in Oxygen Reduction Reactions

机译:级联吸附机制以克服氧气还原反应中的激活能量屏障

摘要

The oxygen reduction reaction (ORR) catalyst has particles of a first ORR catalyst material interspersedly contacted with particles of a second ORR catalyst material. The first and second ORR catalyst materials have different d-band centers, whereby oxygen is rapidly adsorbed at the first binding site, partially reduced, and then transported to the second site where the reduction is complete and rapidly desorbed by water. can be This allows the catalyst to avoid the limitations of slow reactant binding and/or slow product release.
机译:氧还原反应(ORR)催化剂具有第一ORR催化剂材料的颗粒,其与第二ORR催化剂材料的颗粒相互作用。 第一和第二ORR催化剂材料具有不同的D频带中心,其中氧气在第一结合位点快速吸附,部分地减少,然后将其运输到第二位点,其中还原完成并通过水快速解吸。 可以这允许催化剂避免慢反应物结合和/或产品释放缓慢的局限性。

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