Efficient N-doping of hollow core-mesoporous shelled carbon spheres via hydrothermal treatment in ammonia solution for the electrocatalytic oxygen reduction reaction

doi:10.1016/j.micromeso.2017.10.050

	Efficient N-doping of hollow core-mesoporous shelled carbon spheres via hydrothermal treatment in ammonia solution for the electrocatalytic oxygen reduction reaction
	Zhou, Tingsheng 1; Ma, Ruguang ; Zhou, Yao ; Xing, Ruohao ; Liu, Qian 2; Zhu, Yufang 1; Wang, Jiacheng 2
刊名	MICROPOROUS AND MESOPOROUS MATERIALS
	2018
卷号	261 页码:88
关键词	Hydrothermal treatment N-doping Hollow mesoporous spheres Carbon Oxygen reduction reaction
ISSN号	1387-1811
DOI	10.1016/j.micromeso.2017.10.050
英文摘要	Nitrogen-doped hollow core-mesoporous shelled carbon spheres (NHMCSs) are successfully synthesized via a simple, scalable hydrothermal treatment of hollow mesoporous carbon spheres (HMCSs) with ammonia water as the nitrogen source. This strategy not only efficiently introduces nitrogen atoms into the carbon framework, but also causes the fracture of some spheres and increases the shell thickness of hollow spheres. The subsequent pyrolysis at 900 degrees C in Ar results in the transformation of pyrrolic-N to graphitic-N. The resulting NHMCS-900 has a high BET specific surface area (648 m(2) g(-1)), large pore volume (1.06 cm(3) g(-1)), hierarchical mesoporosity (2-8, 43.9 nm), uniform shells and large hollow cores. The electrochemical experiments indicate that NHMCS-900 as a metal-free electrocatalyst possesses the improved ORR activity with a close four-electron reaction pathway (similar to 3.88) and a peroxide yield lower than 10% over a wide potential range in alkaline solution. Contrary to commercial PVC, NHMCS-900 is unaffected by the methanol crossover effect and exhibits excellent long-term durability with 97.0% of the initial current density after 5.56 h of continuous operation. The excellent activity of NHMCS-900 is mainly attributed to the high relative content of pyridinic-N and graphitic-N. Besides, the superior activity is also ascribed to its unique structural properties, promoting fast and efficient mass transfer and providing inner and outer surfaces with N-relative active sites for ORR.
学科主题	Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000427668000011
资助机构	The authors thank the financial support from the National Key Research and Development Program of China (2016YFB0700204), NSFC (51602332, 51502327), Science and Technology Commission of Shanghai Municipality (15520720400, 15YF1413800, 14DZ2261203, 16DZ2260603), Key Project for Young Researcher of State Key Laboratory of High Performance Ceramics and Superfine Microstructure, 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), NSFC (51602332, 51502327), Science and Technology Commission of Shanghai Municipality (15520720400, 15YF1413800, 14DZ2261203, 16DZ2260603), Key Project for Young Researcher of State Key Laboratory of High Performance Ceramics and Superfine Microstructure, 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/331005/24961]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 2.Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, 516 Jungong Rd, Shanghai 200093, 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	Zhou, Tingsheng,Ma, Ruguang,Zhou, Yao,et al. Efficient N-doping of hollow core-mesoporous shelled carbon spheres via hydrothermal treatment in ammonia solution for the electrocatalytic oxygen reduction reaction[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2018,261:88, 97.
APA	Zhou, Tingsheng.,Ma, Ruguang.,Zhou, Yao.,Xing, Ruohao.,Liu, Qian.,...&Wang, Jiacheng.(2018).Efficient N-doping of hollow core-mesoporous shelled carbon spheres via hydrothermal treatment in ammonia solution for the electrocatalytic oxygen reduction reaction.MICROPOROUS AND MESOPOROUS MATERIALS,261,88.
MLA	Zhou, Tingsheng,et al."Efficient N-doping of hollow core-mesoporous shelled carbon spheres via hydrothermal treatment in ammonia solution for the electrocatalytic oxygen reduction reaction".MICROPOROUS AND MESOPOROUS MATERIALS 261(2018):88.