Energy-Saving Hydrogen Production from Methanol Electrocatalysis Catalyzed by Molybdenum Phosphide/Nitrogen-Doped Carbon Polyhedrons Supported Pt Nanoparticles  

作　　者：Jiaojiao Li Meng Li Fulin Yang Ligang Feng 

机构地区：[1]School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,Jiangsu,225002 China [2]Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming,Yunnan,650093 China

出　　处：《Chinese Journal of Chemistry》2025年第2期146-154,共9页中国化学(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.22272148,22102105).

摘　　要：Improving the catalytic efficiency and anti-poisoning ability of Pt-based catalysts is very critical in methanol electrolysis technology for high-purity hydrogen generation.Herein,the nitrogen-doped carbon polyhedrons-encapsulated Mop(MoP@NC)supported Pt nanoparticles were demonstrated to be effective for methanol electrolysis resulting from the combined advantages.The nitrogen-doped carbon polyhedrons not only greatly enhanced the conductivity but also effectively prevented the aggregation of MoP to offer Pt anchoring sites.The electronic structure modification of Pt from their interaction reduced the adsorption energy of co^(*),resulting in good cO-poisoning resistance and accelerated reaction kinetics.Specifically,Pt-MoP@NC exhibited the highest peak current density of 106.4 mA.cm^(-2) for methanol oxidation and a lower overpotential of 28 mV at 10 mA.cm^(-2) for hydrogen evolution.Energy-saving hydrogen production from methanol electrolysis was demonstrated in the two-electrode systems assembled by Pt-MoP@NC which required a low cell voltage of 0.65 V to reach a kinetic current density of 10 mA.cm-on the glass carbon system,about 1.02 V less than thatofwaterelectrolysis.

关 键 词：Molybdenum phosphide Methanol oxidation reaction Pt-based catalyst Hydrogen evolution reaction ELECTROCATALYST 

分 类 号：O64[理学—物理化学]