A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts

doi:10.1002/adma.201706508

	A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts
	Ji, SF; Zheng LR(郑黎荣); Li, YD; Wang, DS; Peng, Q; Chen, C; Gu, L; Wang, Y; Zheng, LR; Zhang, J
刊名	ADVANCED MATERIALS
	2018
卷号	30 期号:15 页码:1706508
关键词	isolated-single-atomic-site oxygen reduction reaction polymer porous nitrogen-doped carbon
ISSN号	0935-9648
DOI	10.1002/adma.201706508
文献子类	Article
英文摘要	A novel polymer encapsulation strategy to synthesize metal isolated-single-atomic-site (ISAS) catalysts supported by porous nitrogen-doped carbon nanospheres is reported. First, metal precursors are encapsulated in situ by polymers through polymerization; then, metal ISASs are created within the polymer-derived p-CN nanospheres by controlled pyrolysis at high temperature (200-900 degrees C). Transmission electron microscopy and N-2 sorption results reveal this material to exhibit a nanospheric morphology, a high surface area (approximate to 380 m(2) g(-1)), and a porous structure (with micropores and mesopores). Characterization by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure confirms the metal to be present as metal ISASs. This methodology is applicable to both noble and nonprecious metals (M-ISAS/p-CN, M = Co, Ni, Cu, Mn, Pd, etc.). In particular, the Co-ISAS/p-CN nanospheres obtained using this method show comparable (E-1/2 = 0.838 V) electrochemical oxygen reduction activity to commercial Pt/C with 20 wt% Pt loading (E-1/2 = 0.834 V) in alkaline media, superior methanol tolerance, and outstanding stability, even after 5000 cycles.
电子版国际标准刊号	1521-4095
WOS关键词	OXYGEN REDUCTION REACTION ; FREE ELECTROCATALYSTS ; COBALT ; GRAPHENE ; SPHERES ; OXIDE ; HYDROGENATION ; SELECTIVITY ; SURFACE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000430101200024
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285828]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Ji, SF,Zheng LR,Li, YD,et al. A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts[J]. ADVANCED MATERIALS,2018,30(15):1706508.
APA	Ji, SF.,郑黎荣.,Li, YD.,Wang, DS.,Peng, Q.,...&Han, AJ.(2018).A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts.ADVANCED MATERIALS,30(15),1706508.
MLA	Ji, SF,et al."A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts".ADVANCED MATERIALS 30.15(2018):1706508.