Laser fabrication of Pt anchored Mo2C micropillars as integrated gas diffusion and catalytic electrode for proton exchange membrane water electrolyzer
Haifeng Yuan 1Lili Zhao 1Bin Chang1
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作者信息
1. Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR),University of Jinan,Jinan 250022,PR China
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Abstract
The efficient electrocatalysts for hydrogen evolution reaction(HER)are indispensable.Herein,Mo2C micropillars decorated with Pt nanoparticles(<4 nm)on Mo foil(Pt/Mo2C-L/Mo)are synthesized by laser ablation in a focused mode in CH4 atmosphere and laser-induced reduction in an under-focused mode in Ar/H2 atmosphere.The Pt/Mo2C-L/Mo possesses excellent HER performance(21 mV at 10 mA cm~(-2))and stability(1317 mA cm~(-2)for 100 h)in acid media.Integrated gas diffusion and catalytic electrodes of Pt/Mo2C-L/Mo are constructed by laser in a mixed model and used in proton exchange membrane water electrolyzer(PEMWE).The voltage of the constructed PEMWE of(-)Pt/Mo2C-L/Mo || IrO2/Ti(+)(1.55 V at 10 mA cm~(-2))is lower than that of(-)20 wt.% Pt/C || IrO2(+)(1.69 V at 10 mA cm~(-2))for overall water splitting.This work provides a universal laser synthetic strategy of integrated electrodes with promising application in the field of hydrogen energy.
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