Co2N nanoparticles embedded N-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction

doi:10.1016/j.apsusc.2018.12.204

	Co2N nanoparticles embedded N-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction
	Guo, Dakai; Tian, Zhengfang; Wang, Jiacheng; Ke, Xuebin; Zhu, Yufang
刊名	APPLIED SURFACE SCIENCE
	2019-04-15
卷号	473 页码:555
关键词	Cobalt nitrides Mesoporous carbon Electrocatalysts Oxygen reduction reaction
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2018.12.204
文献子类	Article
英文摘要	Co-N-C electrocatalysts have attracted great attention in electrocatalytic ORR (oxygen reduction reaction) field. In this work, we propose to prepare Co2N nanoparticles embedded N-doped mesoporous carbon by a facile method including in situ copolymerization and pyrolysis under NH3 atmosphere. The results show that more N atoms can be doped in carbon framework by NH3 pyrolysis, it is also found that pyrolysis temperature and Co content can influence the ORR performance of samples. The sample prepared by adding Co precursor and pyrolysis at 700 degrees C has high N content (11.86 at%) and relative large specific surface area (362 m(2) g(-1)), and it also exhibited superior electrocatalytic ORR performance in terms of E-onset (- 0.038 V vs. SCE), E-1/2 (- 0.126 V vs. SCE) and large current density (5.22 mA cm(-2)). Additionally, the sample also shows better stability and resistance to methanol poisoning than Pt/C catalyst. The synergistic effect of Co-N active centers and hierarchical porous structures contribute the excellent electrocatalytic activity, which are considering as alternative catalysts for ORR in full cells.
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27191]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Guo, Dakai,Tian, Zhengfang,Wang, Jiacheng,et al. Co2N nanoparticles embedded N-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction[J]. APPLIED SURFACE SCIENCE,2019,473:555.
APA	Guo, Dakai,Tian, Zhengfang,Wang, Jiacheng,Ke, Xuebin,&Zhu, Yufang.(2019).Co2N nanoparticles embedded N-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction.APPLIED SURFACE SCIENCE,473,555.
MLA	Guo, Dakai,et al."Co2N nanoparticles embedded N-doped mesoporous carbon as efficient electrocatalysts for oxygen reduction reaction".APPLIED SURFACE SCIENCE 473(2019):555.