新型炭材料（中英文）2026，Vol.41Issue(4)：977-994,18.DOI:10.1016/S1872-5805(26)61093-1
模板辅助构筑蜂窝状氮掺杂碳负载铂分级多孔催化剂及其增强氧还原性能研究
A platinum catalyst with hierarchical porosity supported on a honeycomb-like nitrogen-doped carbon for excellent oxygen reduction reaction performance
摘要
Abstract
Advanced catalyst structures with good active site accessibility and strong metal-support in-teractions are crucial for oxygen reduction reaction(ORR)catalysis.A hierarchically porous Pt catalyst supported on honeycomb-like nitrogen-doped car-bon(Pt/HNC-400,where 400 denotes the optimal dosage(mg)of the sacrificial SiO2 hard template used during synthesis)was fabricated by combining template-assisted pyrolysis and alcohol reduction.The fabrication involves the template-assisted pyro-lysis of ZIF-67(which provides the N-dopant through its 2-methylimidazole ligand)followed by HF etching to completely remove the SiO2,yielding a 3D interconnected porous carbon support.Com-pared to a commercial Pt/C,it had an exceptional ORR performance with a half-wave potential of 0.901 V(41 mV higher),a mass activity at 0.9 V that was 15.3 times higher,and significantly improved durability(a half-wave potential decay of 25 mV vs.80 mV after 10 000 accelerated durability tests(ADTs)).Mechanistic investigations showed that this superior performance is due to the combined effects of the 3D porous structure,ultrafine Pt nanoparticles with strong metal-support interactions,and in-situ formed Co-Nx moieties from the pyrolysis of precursor ZIF-67.After 10 000 ADTs it was shown to have excellent struc-tural integrity,retaining 87.4%of its initial electrochemically active surface area(102.7 m2g-1).This study may assist the devel-opment of new high-performance ORR catalysts.关键词
氧还原反应/类蜂窝碳/模板辅助热解/氮掺杂碳/ZIF-67Key words
Oxygen reduction reaction/honeycomb-like carbon/template-assisted pyrolysis/nitrogen-doped carbon/ZIF-67分类
化学化工引用本文复制引用
符冬菊,刘旭光,陈泽锐,胡照,王南,荀京辉,张伦侨,林泽曦,刘伟峰,于肖..模板辅助构筑蜂窝状氮掺杂碳负载铂分级多孔催化剂及其增强氧还原性能研究[J].新型炭材料（中英文）,2026,41(4):977-994,18.基金项目
This work was supported by National Natural Science Foundation of China(22578303,52302293),Natural Science Foundation of Top Talent of SZTU(GDRC202421),Central Leading Science and Tech-nology Development Foundation of Shanxi Province(YDZJSX2022A009),and Shenzhen Science and Technology Program(20231127203830001). 国家自然科学基金(22578303,52302293) （22578303,52302293）
深圳鹏城孔雀高层次人才项目(GDRC202421) （GDRC202421）
山西省中央地方项目(YDZJSX2022A009) （YDZJSX2022A009）
深圳普通高校稳定支持项目(20231127203830001). （20231127203830001）
