Facile preparation of CoO nanoparticles embedded N-doped porous carbon from conjugated microporous polymer for oxygen reduction reaction

被引:24
作者
Hu, Lingling [1 ]
Gu, Shuai [1 ]
Yu, Wenguang [1 ]
Zhang, Weijie [1 ]
Xie, Qiujian [1 ]
Pan, Chunyue [1 ]
Tang, Juntao [1 ]
Yu, Guipeng [1 ]
机构
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
基金
美国国家科学基金会;
关键词
Electrocatalyst; Porous carbon; Oxygen reduction; CoO nanoparticles; Conjugated microporous polymer; SIZE-DEPENDENT ACTIVITY; ELECTROCATALYSTS; NITROGEN; CATALYSTS; NANOCRYSTALS; CONVERSION; NANOTUBES; ENERGY; NETWORKS; CAPTURE;
D O I
10.1016/j.jcis.2019.11.079
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Developing cost-effective approaches for fabricating porous carbon (PC) based catalysts with favourable oxygen reduction reaction (ORR) performance is highly significant for fuel-cell devices. Herein, we reported a precursor controlled, molten salt-templated approach to prepare ultrafine CoO nanoparticles embedded nitrogen-doped PC materials with high surface area (1236 m(2) g(-1)) and large pore volume (0.68 cm(3) g(-1)). This method is simple and feasible, which produce CoO nanoparticles that were uniformly distributed on carbon skeleton with diameters in the range of 5-10 nm. The unexpected collapse of porous structures and agglomeration of metal nanoparticles were suppressed in the synthetic process. The as-made sample not only showed efficient catalytic activity towards ORR in alkaline media with a half wave potential (E-1/2) of 0.85 V (vs. RHE), but also exhibited better stability and stronger resistance to methanol than Pt/C. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码:550 / 557
页数:8
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