title: A highly efficient electrocatalyst for oxygen reduction reaction: phosphorus and nitrogen co-doped hierarchically ordered porous carbon derived from an iron-functionalized polymer.
abstract: Heteroatom-doped carbon materials have shown respectable activity for the oxygen reduction reaction (ORR) in alkaline media. However, the performances of these materials are not satisfactory for energy conversion devices, such as fuel cells. Here, we demonstrate a new type of phosphorus and nitrogen co-doped hierarchically ordered porous carbon (PNHOPC) derived from an iron-functionalized mesoporous polymer through an evaporation-induced self-assembly process that simultaneously combines the carbonization and nitrogen doping processes. The soft template and the nitrogen doping process facilitate the formation of the hierarchically ordered structure for the PNHOPC. The catalyst possesses a large surface area (1118 cm(2) g(-1)) and a pore volume of 1.14 cm(3) g(-1). Notably, it exhibits excellent ORR catalytic performance, superior stability and methanol tolerance in acidic electrolytes, thus making the catalyst promising for fuel cells. The correlations between the unique pore structure and the nitrogen and phosphorus configuration of the catalysts with high catalytic activity are thoroughly investigated.
authors.affiliation: Division of Energy Storage, Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. zhanghm@dicp.ac.cn zhonghexiang@dicp.ac.cn and Graduate University of the Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Chengwei
authors.initials: C
authors.lastname: Deng
authors.affiliation: Division of Energy Storage, Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. zhanghm@dicp.ac.cn zhonghexiang@dicp.ac.cn.
authors.forename: Hexiang
authors.initials: H
authors.lastname: Zhong
authors.affiliation: Division of Energy Storage, Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. zhanghm@dicp.ac.cn zhonghexiang@dicp.ac.cn and Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Dalian 116023, P.R. China.
authors.forename: Xianfeng
authors.initials: X
authors.lastname: Li
authors.affiliation: Division of Energy Storage, Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. zhanghm@dicp.ac.cn zhonghexiang@dicp.ac.cn and Graduate University of the Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Yao
authors.affiliation: Division of Energy Storage, Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. zhanghm@dicp.ac.cn zhonghexiang@dicp.ac.cn and Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Dalian 116023, P.R. China.
authors.forename: Huamin
authors.initials: H
authors.lastname: Zhang