Effect of Transition Metals on the Structure and Performance of the Doped Carbon Catalysts Derived From Polyaniline and Melamine for ORR Application

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• 作者：Hongliang Peng ; Fangfang Liu ; Xiaojun Liu ; Shijun Liao ; Chenghang You ; Xinlong Tian ; Haoxiong Nan ; Fan Luo ; Huiyu Song ; Zhiyong Fu ; Peiyan Huang
• 刊名：ACS Catalysis
• 出版年：2014
• 出版时间：October 3, 2014
• 年：2014
• 卷：4
• 期：10
• 页码：3797-3805
• 全文大小：752K
• ISSN：2155-5435

文摘

In this work, the effects of the addition of transition metals (Mn, Fe, Co, Ni, Cu) on the structure and performance of the doped carbon catalysts M-PANI/C-Mela are investigated. The results show that the doping of various transition metals affected structures and performances of the catalysts significantly. Doping with Fe and Mn leads to a catalyst with a graphene-like structure, and doping with Co, Ni, and Cu leads to a disordered or nanosheet structure. The doping of transition metals can enhance the performance of the catalysts, and their ORR activity follows the order of Fe > Co > Cu > Mn > Ni, which is consistent with the order of their active N contents. We suggest that the various performance enhancements of the transition metals may be the result of the joint effect of the following three aspects: the N content/active N content, metal residue, and the surface area and pore structure, but not the effect of any single factor.

Keywords:

doped carbon; effect; oxygen reduction reaction; performance; structure; transition metals