Swelling-induced synthesis of nitrogen-doped graphene for oxygen reduction reaction

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 先进润滑与防护材料研究发展中心

	Swelling-induced synthesis of nitrogen-doped graphene for oxygen reduction reaction
	Pan FP(潘富平)1,2 ; Guo, Shu (郭术)3; Zhang JY(张俊彦)1
刊名	Electrochimica Acta
	2015
卷号	180 页码:29-36
关键词	Oxygen reduction reaction Fuel cells Swelling Graphene Nitrogen doping
ISSN号	0013-4686
英文摘要	The development of graphene-based electrocatalyst for the oxygen reduction reaction (ORR) is of great significance. Herein, we report a swelling-induced approach based on the thermal condensation of dicyandiamide (DCDA) to convert the porous sucrose-derived sphere (PSS) into nitrogen-doped graphene (NG) via facile one-step pyrolysis. The polycondensation of DCDA creates the volume expansion that results in the rupture of PSS and the formation of NG after high-temperature nitrogen doping and carbonization processes. This method allows for the facile optimization of the nitrogen doping level and graphitization degree by adjusting the annealing temperature. In alkaline media, the NG exhibits an excellent electrocatalytic ORR activity comparable to commercial Pt/C catalyst in terms of four-electron transfer pathway, low overpotential and high kinetic-limiting current density of 15.29 mA cm⁻² at 0.665 V (vs. RHE), together with its better durability. The high ORR performance of NG is attributed to the synergetic effects between optimal nitrogen doping (moderate total nitrogne content with high proportion of graphitic nitrogen) and enhanced electronic conductivity, which offers the highly active and dense centers and facilitates the electron transfer for ORR process, respectively. This finding is useful for producing novel nanocarbon and propelling the application of clean energy systems.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Key Basic Research and Development (973) Program of China (Grant No. 2013CB632300);the National Natural Science Foundation of China (Grant No. 51275508;51205383).
语种	英语
WOS记录号	WOS:000363345100004
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/19060]
专题	兰州化学物理研究所_先进润滑与防护材料研究发展中心兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Hainan Normal Univ, Sch Chem & Chem Engn, Haikou 571158, Peoples R China
推荐引用方式 GB/T 7714	Pan FP,Guo, Shu ,Zhang JY. Swelling-induced synthesis of nitrogen-doped graphene for oxygen reduction reaction[J]. Electrochimica Acta,2015,180:29-36.
APA	Pan FP,Guo, Shu ,&Zhang JY.(2015).Swelling-induced synthesis of nitrogen-doped graphene for oxygen reduction reaction.Electrochimica Acta,180,29-36.
MLA	Pan FP,et al."Swelling-induced synthesis of nitrogen-doped graphene for oxygen reduction reaction".Electrochimica Acta 180(2015):29-36.