N-doped porous graphite with multilevel pore defects and ultra-high conductivity anchoring Pt nanoparticles for proton exchange membrane water electrolyzers  

作　　者：Yu Hao Dongfang Chen Guangxin Yang Song Hu Shunyu Wang Pucheng Pei Jinkai Hao Xiaoming Xu 

机构地区：[1]School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Shunde Innovation School,University of Science and Technology Bejing,Foshan 528000,Guangdong,China [3]School of Vehicle and Mobility,Tsinghua University,Beijing 100084,China [4]National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 11623,Liaoning,China

出　　处：《Journal of Energy Chemistry》2025年第3期290-301,共12页能源化学(英文版)

基　　金：funded by the National Natural Science Foundation of China(No.52202446);the Young Elite Scientists Sponsorship Program by CAST(No.2022QNRC001);the Young Elite Scientists Sponsorship Program by BAST(No.BYESS2023050);the Beijing Association for Science and Technology’s Golden-Bridge Seed Funding Program(No.ZZ22042);the Fundamental Research Funds for the Central Universities of China。

摘　　要：Water electrolysis for hydrogen production offers a promising solution to future energy crises and environmental challenges.Although platinum is an efficient catalyst for hydrogen evolution reactions(HERs),its high cost and stability challenges limit its widespread use.A novel platinum-based catalyst,comprising platinum nanoparticles on nitrogen-doped porous graphite(Pt-N-porous graphite),addresses these limitations.This catalyst prevents nanoparticle aggregation,provides a high specific surface area of 1308 m^(2)g^(-1),and enhances mass transfer and active site exposure.Additionally,it exhibits superior electrical conductivity compared to commercial Pt-C,enhancing charge transfer efficiency.The Pt-N-porous graphite catalyst achieves an overpotential of 99 mV at 100 mA cm^(-2)and maintains stable performance after 10,000 cycles.Applied as a catalyst-coated membrane(CCM)in a proton exchange membrane(PEM)electrolyzer,it demonstrates excellent performance.Thus,the industrially synthesizable Pt-N-porous graphite catalyst holds great potential for large-scale energy applications.

关 键 词：Hydrogen evolution reaction Defect-rich porous graphite Superior electrical conductance Spatial confinement Electronic modulation 

分 类 号：O643.36[理学—物理化学]