首页|A general synthetic strategy for N,P co-doped graphene supported metal-rich noble metal phosphides for hydrogen generation

A general synthetic strategy for N,P co-doped graphene supported metal-rich noble metal phosphides for hydrogen generation

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The exploitation of electrocatalysts with high activity and durability for HER is desirable for future energy systems,but it is still a challenge.NMPs have attracted increasing attentions,but the preparation process often needs toxic regents or dangerous reaction conditions.Herein,we develop a general green method to fabricate metal-rich NMPs anchored on NPG through pyrolyzing DNA cross-linked complexes.The obtained Ru2P-NPG exhibits an ultrasmall overpotential of 7 mV at 10 mA cm-2 and ultralow Tafel slope of 33 mV dec-1 in 1.0 mol L-1 KOH,even better than that of commercial Pt/C.In addition,Ru2P-NPG also shows low overpotentials of 29 and 78 mV in 0.5 mol L-1 H2SO4 and 1.0 mol L-1 PBS,respectively.The superior activity can be attributed to the ultrafine dispersion of Ru2P nanoparticles for more accessible sites,more defects formed for abundant active sites,the two-dimensional plane structure for accelerated electron transfer and mass transport,as well as the regulation of electron distribution of the catalyst.Moreover,the synthetic method can also be applied to prepare other metal-rich noble metal phosphides(Pd3P-NPG and Rh2P-NPG),which also exhibits high activity for HER.This work provides an effective strategy for designing NMP-based electrocatalysts.

Noble metal phosphidesElectrocatalystDeoxyribonucleic acidHydrogen evolutionpH universal

Jingwen Ma、Xiang Li、Guangyu Lei、Jun Wang、Juan Wang、Jian Liu、Ming Ke、Yang Li、Chunwen Sun

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School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing,100083,China

State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing,102249,China

Lab of Advanced Nano-structures & Transfer Processes,Department of Chemical Engineering,Tianjin University,Tianjin,300354,China

PetroChina Planning and Engineering Institute,Beijing,100083,China

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中央高校基本科研业务费专项国家重点研发计划

2022XJHH022019YFC1907602

2024

10.1016/j.gee.2022.04.009

绿色能源与环境(英文)

绿色能源与环境(英文)

CSTPCD
ISSN：
年,卷(期)：2024.9(1)
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