Reactive template synthesis of nitrogen-doped graphene-like carbon nanosheets derived from hydroxypropyl methylcellulose and dicyandiamide as efficient oxygen reduction electrocatalysts

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 高性能陶瓷和超微结构国家重点实验室 > 期刊论文

	Reactive template synthesis of nitrogen-doped graphene-like carbon nanosheets derived from hydroxypropyl methylcellulose and dicyandiamide as efficient oxygen reduction electrocatalysts
	Hu, Chun 1,2; Zhou, Yao 1; Ma, Ruguang 1; Liu, Qian 1,3; Wang, Jiacheng 1,3
刊名	JOURNAL OF POWER SOURCES
	2017-03-31
卷号	345 页码:120-130
关键词	Graphene Nitrogen doping Reactive template Electrocatalysis Oxygen reduction reaction Stability
英文摘要	Oxygen reduction reaction (ORR) plays a dominant role in proton exchange membrane fuel cells (PEMFCs). Thus, the design and preparation of efficient ORR electrocatalysts is of high importance. In this work, we successfully prepared a series of nitrogen-doped graphene-like carbon nanosheets (NCNSs) with large pore volumes of up to 1.244 cm(3) g(-1) and high level of N dopants (5.3-6.8 at%) via a one-step, in-situ reactive template strategy by co-pyrolysis of hydroxypropyl methylcellulose (HPMC) and dicyandiamide (DICY) as the precursors at 1000 degrees C. The DICY-derived graphitic carbon nitride (g-C3N4) nanosheets could act as the hard template for the confined growth of 2D carbon nanosheets, and the further increase in the pyrolysis temperature could directly remove off the g-C3N4 template by complete decomposition and simultaneously dope N atoms within the carbon nanosheets. The pyridinic and graphitic nitrogen groups are dominant among various N functional groups in the NCNSs. The NCNS_1:10 prepared with the HPMC/DICY mass ratio of 1/10 can be used as the metal-free ORR electrocatalysts with optimal activity (onset potential: 0.1 V vs. SCE; limiting current density: 4.8 mA cm(-2)) in 0(2)-saturated 0.1 M KOH electrolyte among the NCNSs. Moreover, the NCNS_1:10 demonstrates a dominant four electron reduction process, as well as excellent long-term operation stability and outstanding methanol crossover resistance. The excellent ORR activity of the NCNS_1:10 should be mainly owing to high contents of pyridinic and graphitic N dopants, large pore volume, hierarchical structures, and micro structural defects. (C) 2017 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	SBA-15 MESOPOROUS MATERIALS ; PEROXIDE FUEL-CELL ; PT-FREE CATALYSTS ; IN-SITU GROWTH ; COFE2O4 NANOPARTICLES ; HYDROGEN EVOLUTION ; POROUS CARBON ; PERFORMANCE ; SUPPORT ; FOAM
收录类别	SCI
语种	英语
WOS记录号	WOS:000397355500013
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23703]
专题	上海硅酸盐研究所_高性能陶瓷和超微结构国家重点实验室_期刊论文
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, PR, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, PR, Peoples R China 3.Shanghai Inst Mat Genome, Shanghai, PR, Peoples R China
推荐引用方式 GB/T 7714	Hu, Chun,Zhou, Yao,Ma, Ruguang,et al. Reactive template synthesis of nitrogen-doped graphene-like carbon nanosheets derived from hydroxypropyl methylcellulose and dicyandiamide as efficient oxygen reduction electrocatalysts[J]. JOURNAL OF POWER SOURCES,2017,345:120-130.
APA	Hu, Chun,Zhou, Yao,Ma, Ruguang,Liu, Qian,&Wang, Jiacheng.(2017).Reactive template synthesis of nitrogen-doped graphene-like carbon nanosheets derived from hydroxypropyl methylcellulose and dicyandiamide as efficient oxygen reduction electrocatalysts.JOURNAL OF POWER SOURCES,345,120-130.
MLA	Hu, Chun,et al."Reactive template synthesis of nitrogen-doped graphene-like carbon nanosheets derived from hydroxypropyl methylcellulose and dicyandiamide as efficient oxygen reduction electrocatalysts".JOURNAL OF POWER SOURCES 345(2017):120-130.