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A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts
Han, AJ; Chen, WX; Zhang, SL; Zhang, ML; Han, YH; Zhang, J; Ji, SF; Zheng, LR; Wang, Y; Gu, L; Chen, C; Peng, Q; Wang, DS; Li, YD
2018
Source PublicationADVANCED MATERIALS
ISSN0935-9648
Volume30Issue:15Pages:-
Subtype期刊论文
AbstractA 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.
KeywordOxygen Reduction Reaction Free Electrocatalysts Cobalt Graphene Spheres Oxide Hydrogenation Selectivity Surface
DOI10.1002/adma.201706508
Indexed BySCI
Language英语
WOS IDWOS:000430101200024
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28910
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.Han, AJ
2.Chen, WX
3.Zhang, SL
4.Zhang, ML
5.Han, YH
6.Zhang, J
7.Ji, SF
8.Zheng, LR
9.Wang, Y
10.Gu, L
11.Chen, C
12.Peng, Q
13.Wang, DS
14.Li, YD
Recommended Citation
GB/T 7714
Han, AJ,Chen, WX,Zhang, SL,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):-.
APA Han, AJ.,Chen, WX.,Zhang, SL.,Zhang, ML.,Han, YH.,...&Li, YD.(2018).A Polymer Encapsulation Strategy to Synthesize Porous Nitrogen-Doped Carbon-Nanosphere-Supported Metal Isolated-Single-Atomic-Site Catalysts.ADVANCED MATERIALS,30(15),-.
MLA Han, AJ,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):-.
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