Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction

doi:10.1007/s40820-017-0181-1

	Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction
	Gu, Daguo ; Zhou, Yao 1; Ma, Ruguang 1; Wang, Fangfang 1; Liu, Qian 1,2; Wang, Jiacheng 1,2
刊名	NANO-MICRO LETTERS
	2018
卷号	10 期号:2
关键词	Nitrogen doping Graphene-like Carbon nanoflakes Electrocatalyst Oxygen reduction reaction
ISSN号	2311-6706
DOI	10.1007/s40820-017-0181-1
英文摘要	series of N-doped carbon materials (NCs) were synthesized by using biomass citric acid and dicyandiamide as renewable raw materials via a facile one-step pyrolysis method. The characterization of microstructural features shows that the NCs samples are composed of few-layered graphene-like nanoflakes with controlled in situ N doping, which is attributed to the confined pyrolysis of citric acid within the interlayers of the dicyandiamide-derived g-C3N4 with high nitrogen contents. Evidently, the pore volumes of the NCs increased with the increasing content of dicyandiamide in the precursor. Among these samples, the NCs nanoflakes prepared with the citric acid/dicyandiamide mass ratio of 1: 6, NC-6, show the highest N content of similar to 6.2 at%, in which pyridinic and graphitic N groups are predominant. Compared to the commercial Pt/C catalyst, the as-prepared NC-6 exhibits a small negative shift of similar to 66 mV at the half-wave potential, demonstrating excellent electrocatalytic activity in the oxygen reduction reaction. Moreover, NC-6 also shows better long-term stability and resistance to methanol crossover compared to Pt/C. The efficient and stable performance are attributed to the graphene-like microstructure and high content of pyridinic and graphitic doped nitrogen in the sample, which creates more active sites as well as facilitating charge transfer due to the close four-electron reaction pathway. The superior electrocatalytic activity coupled with the facile synthetic method presents a new pathway to cost-effective electrocatalysts for practical fuel cells or metal-air batteries. [GRAPHICS]
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000425093800010
资助机构	The authors thank the financial support from the National Key Research and Development Program of China (2016YFB0700204), Natural Science Foundation of Jiangsu Province (No. BK20140472), NSFC (51602332, 51502327), Science and Technology Commission of Shanghai Municipality (15520720400, 15YF1413800, 14DZ2261203, 16DZ2260603), and One Hundred Talent Plan of Chinese Academy of Sciences. ; The authors thank the financial support from the National Key Research and Development Program of China (2016YFB0700204), Natural Science Foundation of Jiangsu Province (No. BK20140472), NSFC (51602332, 51502327), Science and Technology Commission of Shanghai Municipality (15520720400, 15YF1413800, 14DZ2261203, 16DZ2260603), and One Hundred Talent Plan of Chinese Academy of Sciences.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25071]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Yancheng Inst Technol, Sch Mat Engn, Yancheng 224051, Jiangsu, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 3.Shanghai Inst Mat Genome, 99 Shangda Rd, Shanghai 200444, Peoples R China
推荐引用方式 GB/T 7714	Gu, Daguo,Zhou, Yao,Ma, Ruguang,et al. Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction[J]. NANO-MICRO LETTERS,2018,10(2).
APA	Gu, Daguo,Zhou, Yao,Ma, Ruguang,Wang, Fangfang,Liu, Qian,&Wang, Jiacheng.(2018).Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction.NANO-MICRO LETTERS,10(2).
MLA	Gu, Daguo,et al."Facile Synthesis of N-Doped Graphene-Like Carbon Nanoflakes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction".NANO-MICRO LETTERS 10.2(2018).