IrMo Nanocatalysts for Efficient Alkaline Hydrogen
Electrocatalysis
Posted on 2020-06-22 - 04:35
Developing
highly efficient electrocatalysts and fundamentally
understanding the mechanisms for alkaline hydrogen electrode reactions,
including the hydrogen oxidation reaction (HOR) and the hydrogen evolution
reaction (HER), are highly desirable. Here we report the synthesis
of the IrMo alloy nanocatalyst and its outstanding HOR/HER performances
under alkaline media. Specifically, the IrMo0.59 exhibits
the highest catalytic activities, which are 5 times higher than that
of Ir and commercial Pt/C toward HOR and even a 10-fold enhancement
toward HER. Density functional theory (DFT) calculations reveal that
H2O-occupied Mo sites on the surface of IrMo could effectively
optimize the free energies of *H2O and *OH, thereby enable
IrMo following the so-called bifunctional mechanism both in alkaline
HER/HOR electrolysis.
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Fu, Luhong; Li, Yunbo; Yao, Na; Yang, Fulin; Cheng, Gongzhen; Luo, Wei (2020). IrMo Nanocatalysts for Efficient Alkaline Hydrogen
Electrocatalysis. ACS Publications. Collection. https://doi.org/10.1021/acscatal.0c02254
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AUTHORS (6)
LF
Luhong Fu
YL
Yunbo Li
NY
Na Yao
FY
Fulin Yang
GC
Gongzhen Cheng
WL
Wei Luo