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Advances in Direct Formic Acid Fuel Cells: Fabrication of Efficient Ir/Pd Nanocatalysts for Formic Acid Electro-Oxidation

机译:直接甲酸燃料电池的进展:用于甲酸电氧化的高效Ir / Pd纳米催化剂的制备

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The modification of a glassy carbon (GC) electrode with palladium (PdNPs) and Iridium (IrNPs)nanoparticles is targeted to develop efficient anodes for formic acid electro璷xidation (FAO). Thedeposition order of PdNPs and IrNPs is appropriately adjusted in such a way that could improve theelectrocatalytic activity and stability of the electrode towards FAO. The highest catalytic activity andstability are obtained at the Ir/Pd/GC electrode (with PdNPs directly deposited onto the GC electrodefollowed with IrNPs). Such enhancement is manifested in the increase of the oxidation current offormic acid (FA) together with a favorable negative shift in the onset potential of FAO. This marvelousenhancement is believed to originate from the electronic enhancement and/or the bi-functionalmechanism of IrNPs to the Pd揵ased catalysts.
机译:用钯(PdNPs)和铱(IrNPs)纳米粒子修饰玻璃碳(GC)电极的目的是开发用于甲酸电氧化(FAO)的高效阳极。可以适当调整PdNPs和IrNPs的沉积顺序,以提高电极对FAO的电催化活性和稳定性。在Ir / Pd / GC电极上可获得最高的催化活性和稳定性(PdNP直接沉积在GC电极上,然后是IrNP)。这种增强表现为甲酸(FA)氧化电流的增加,以及粮农组织开始潜力的有利的负向变化。据信这种奇妙的增强源自IrNP对Pd-ased催化剂的电子增强和/或双功能机理。

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