Fe3C纳米颗粒负载的3D介孔N-掺杂碳作为酸性氧还原催化剂  

Fe3C Nanoparticles-loaded 3D Nanoporous N-doped Carbon as Oxygen Reduction Catalyst in Acidic Medium

作　　者：翁苗苗 何兴权[1] WENG Miao-miao;HE Xing-quan(School of Chemistry and Environment Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学化学与环境工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2020年第1期120-126,共7页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省自然科学基金项目(20160101298JC)。

摘　　要：高性能的非贵金属氧还原反应(ORR)电催化剂被广泛认为是在燃料电池中最有可能取代贵金属铂基催化剂的候选者。在此,利用聚苯胺和铁(Ⅲ)修饰的介孔石墨化氮化碳(g-C3N4)作为前驱体,合成了一种新型的碳化铁(Fe3C)负载的多孔氮掺杂碳材料,命名为Fe3C/NC-800(其中800代表热解温度)。该催化剂在酸性介质中对ORR展示了优异的催化活性,与Pt/C比较,具有更正的起始电位。这种新型的非贵金属基碳材料可能成为贵金属ORR电催化剂的可行替代品。High-performance,non-precious metal electrocatalysts have been widely considered as the most prospective candidates to replace Pt-based electrocatalysts for the oxygen reduction reaction(ORR) in fuel cells. Herein,a novel iron carbide(Fe3C) nanoparticles-loaded porous N-doped carbon material,named as Fe3C/NC-800(where 800 represents the pyrolysis temperature),was synthesized by using polyaniline and Fe(Ⅲ)-modified mesoporous graphitic carbon nitride(g-C3N4) as a precursor. The as-prepared catalyst showed the electrocatalytic activity with a more positive onset potential was excellent when being compared to the benchmark Pt/C(20 wt.% Pt). This novel non-noble metal-based carbon material can potentially become viable alternative to precious metal electrocatalysts for ORR.

关 键 词：燃料电池 电催化剂 氧还原反应 非贵金属基碳材料 

分 类 号：O646[理学—物理化学]