Template-free synthesis of hollow nitrogen-doped carbon as efficient electrocatalysts for oxygen reduction reaction

In this paper, we report a template-free method to fabricate hollow nitrogen-doped carbon (HNC) by pyrolysis of hollow polyaniline microspheres, which were synthesized by suspension polymerization method. The entire synthesis is simple, environmentally benign, and economic. The oxygen reduction reac...

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Published inJournal of power sources Vol. 274; pp. 645 - 650
Main Authors Wu, Rui, Chen, Siguo, Zhang, Yuanliang, Wang, Yao, Ding, Wei, Li, Li, Qi, Xueqiang, Shen, Xiu, Wei, Zidong
Format Journal Article
LanguageEnglish
Published 15.01.2015
Subjects
Carbon
Catalysts
Crossovers
Durability
Economics
Noble metals
Platinum
Reduction
Synthesis
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Summary:In this paper, we report a template-free method to fabricate hollow nitrogen-doped carbon (HNC) by pyrolysis of hollow polyaniline microspheres, which were synthesized by suspension polymerization method. The entire synthesis is simple, environmentally benign, and economic. The oxygen reduction reaction (ORR) activity of the as-prepared HNC catalyst is close to that of the commercial Pt/C catalyst in alkaline media with four electron pathway. Moreover, the HNC shows much better fuel crossover resistance and long-term durability than the commercial Pt/C in alkaline medium. All these features make HNC a potentially promising and suitable substitute for the expensive noble metal catalysts in the next generation alkaline fuel cells.
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ISSN:0378-7753
DOI:10.1016/j.jpowsour.2014.10.118