多孔有机聚合物衍生的FeP@N、P共掺杂多孔碳作为pH通用型氧还原反应的高效电催化剂
Porous Organic Polymer-Derived FeP@N,P-Codoped Porous Carbon as Efficient Electrocatalysts for pH Universal ORR.
作者信息
Zhang Meng, Ming Jingjing, Zhang Wenhua, Xie Jingru, Lin Ping, Song Xiaofei, Chen Xiangying, Wang Xuedong, Zhou Baolong
机构信息
College of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, P. R. China.
Department of Clinical Pharmacy, Weifang People's Hospital, Weifang 261000, Shandong, P. R. China.
出版信息
ACS Omega. 2020 Mar 24;5(13):7225-7234. doi: 10.1021/acsomega.9b03851. eCollection 2020 Apr 7.
A new porous organic polymer (CP-CMP) was designed and synthesized via the direct polymerization of pyrrole and hexakis(4-formyl-phenoxy)cyclotriphosphazene, skipping the tedious synthetic procedure of porphyrin-monomers containing special groups. This special porous organic polymer (POP) serves as an "all in one" precursor for C, N, P, and Fe. Direct carbonization of this special POP afforded FeP@N,P-codoped porous carbons with hierarchical pore structure and high graphitization. Finally, the optimal catalyst (CP-CMP-900) prepared by carbonization of CP-CMP at 900 °C exhibited high efficiency for oxygen electroreduction. Typically, CP-CMP-900 presented an oxygen reduction reaction half-wave potential ( ) of 0.85, 0.73, and 0.65 V, respectively, in alkaline, neutral, and acidic media, close to those of commercial Pt/C in the same electrolyte (0.843, 0.71, and 0.74 V). Furthermore, it also displayed excellent methanol immunity and long-time stability in various electrolytes better than commercial Pt/C (20%).
通过吡咯与六（4 - 甲酰基苯氧基）环三磷腈的直接聚合反应，设计并合成了一种新型多孔有机聚合物（CP - CMP），省去了含特殊基团卟啉单体繁琐的合成步骤。这种特殊的多孔有机聚合物（POP）作为C、N、P和Fe的“一体化”前驱体。对这种特殊的POP进行直接碳化，得到具有分级孔结构和高石墨化程度的FeP@N，P共掺杂多孔碳。最后，通过在900℃对CP - CMP进行碳化制备的最优催化剂（CP - CMP - 900）对氧电还原表现出高效性。具体而言，CP - CMP - 900在碱性、中性和酸性介质中分别呈现出0.85、0.73和0.65 V的氧还原反应半波电位，与相同电解液中商业Pt/C的半波电位（0.843、0.71和0.74 V）相近。此外，它在各种电解液中还表现出优于商业Pt/C（20%）的优异抗甲醇性能和长期稳定性。
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