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Polyaniline derived N- and O-enriched high surface area hierarchical porous carbons as an efficient metal-free electrocatalyst for oxygen reduction

文献类型： 外文期刊

作者： Zhou, Fen 1 ; Wang, Guangjin 1 ; Huang, Fei 3 ; Zhang, Yue 1 ; Pan, Mu 1 ;

作者机构： 1.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Hubei Key Lab Fuel Cells, Wuhan 430070, Hubei, Peoples R China

2.Hubei Engn Univ, Coll Chem & Mat Sci, Xiaogan 432000, Peoples R China

3.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Minist Agr,Guangdong Key Lab Agr Prod Proc, Guangzhou 510610, Guangdong, Peoples R China

关键词： Polyaniline;N- and O-enriched high surface area hierarchical porous carbons;Oxygen reduction reaction;Electrocatalyst

期刊名称：ELECTROCHIMICA ACTA （ 影响因子：6.901； 五年影响因子：6.016 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： AbstractFor promoting the development of fuel cells and metal-air batteries, it is imperative to replace rare and expensive precious-metal catalysts with sustainable catalysts composed of earth-abundant elements. Herein, we reported the preparation of polyaniline derived N- and O-enriched high surface area hierarchical porous carbon catalysts that can be regarded as metal-free catalysts for oxygen reduction reaction (ORR). Using perchloric acid (HClO4) as oxidant and pore-forming agent, the N- and O-enriched high surface area hierarchical porous carbon catalysts were fabricated by electrochemical polymerization of aniline, followed by high temperature carbonization of the resulting polyaniline (PANI) precursors. The obtained carbon catalysts exhibited excellent catalytic activity for ORR with high ORR onset potential and high kinetic current density, and good electrochemical stability. These superior electrochemical properties of the N- and O- enriched high surface area hierarchical porous carbon catalysts were closely related to their high surface area and high content of pyridinic nitrogen and graphitic nitrogen.]]>

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