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

[Display omitted] 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 ult...

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Bibliographic Details
Published in:Journal of colloid and interface science 2020-03, Vol.562, p.550-557
Main Authors: Hu, Lingling, Gu, Shuai, Yu, Wenguang, Zhang, Weijie, Xie, Qiujian, Pan, Chunyue, Tang, Juntao, Yu, Guipeng
Format: Article
Language:English
Subjects:
Conjugated microporous polymer
CoO nanoparticles
Electrocatalyst
Oxygen reduction
Porous carbon
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Summary:[Display omitted] 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 m2 g−1) and large pore volume (0.68 cm3 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 (E1/2) of 0.85 V (vs. RHE), but also exhibited better stability and stronger resistance to methanol than Pt/C.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2019.11.079