A catalyst-free synthesis of B, N co-doped graphene nanostructures with   tunable dimensions as highly efficient metal free dual electrocatalysts

doi:10.1039/c6ta07214c

CORC > 北京大学 > 工学院

	A catalyst-free synthesis of B, N co-doped graphene nanostructures with tunable dimensions as highly efficient metal free dual electrocatalysts
	Tabassum, Hassina ; Zou, Ruqiang ; Mahmood, Asif ; Liang, Zibin ; Guo, Shaojun
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2016
关键词	OXYGEN REDUCTION REACTION HYDROGEN-EVOLUTION REACTION CARBON NANOTUBES ACTIVE-SITES NITROGEN BORON BCN NANOCRYSTALS SULFUR FILMS
DOI	10.1039/c6ta07214c
英文摘要	The search for highly efficient earth-abundant carbon nanomaterials with Pt-like electrocatalytic activity for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is still a great challenge. Herein, we present a new catalyst-free synthetic strategy of self-squeezing and rolling of B, N co-doped graphene nanosheets to nanotubes with tunable dimensions and atomic bonds as metal-free electrocatalysts for enhancing the ORR and HER using (polyethylene glycol (PEG)) as the directing agent. We found that the PEG with a higher molecular weight favors the formation of B, N co-doped graphene nanosheets with a high concentration of B-N bonds in a carbon framework whereas the one with a lower molecular weight leads to B, N co-doped graphene nanotubes (BCN nanotubes) with segregated B-C and N-C bonds. The as-prepared graphene nanostructures show interesting atomic bonds and dimension-dependent electrocatalytic activity towards the ORR and HER with BCN nanotubes being the best. The BCN nanotubes show Pt-like ORR activity and much better ORR stability than commercial Pt/C catalysts. They also exhibit excellent HER activity with a very low overpotential and a small Tafel slope of 92 mV dec(-1). The present work highlights the importance of tuning atomic bonds and dimensions of carbon nanomaterials for achieving highly efficient electrocatalysts for the ORR and HER.; National Natural Science Foundation of China [51322205, 21371014]; Peking University; Young Thousand Talented Program; SCI(E); ARTICLE; rzou@pku.edu.cn; guosj@pku.edu.cn; 42; 16469-16475; 4
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/459170]
专题	工学院
推荐引用方式 GB/T 7714	Tabassum, Hassina,Zou, Ruqiang,Mahmood, Asif,et al. A catalyst-free synthesis of B, N co-doped graphene nanostructures with tunable dimensions as highly efficient metal free dual electrocatalysts[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016.
APA	Tabassum, Hassina,Zou, Ruqiang,Mahmood, Asif,Liang, Zibin,&Guo, Shaojun.(2016).A catalyst-free synthesis of B, N co-doped graphene nanostructures with tunable dimensions as highly efficient metal free dual electrocatalysts.JOURNAL OF MATERIALS CHEMISTRY A.
MLA	Tabassum, Hassina,et al."A catalyst-free synthesis of B, N co-doped graphene nanostructures with tunable dimensions as highly efficient metal free dual electrocatalysts".JOURNAL OF MATERIALS CHEMISTRY A (2016).