IHEP OpenIR
Single Cobalt Atoms with Precise N-Coordination as Superior Oxygen Reduction Reaction Catalysts
Yin, PQ; Yao, T; Wu, Y; Zheng, LR; Lin, Y; Liu, W; Ju, HX; Zhu, JF; Hong, X; Deng, ZX; Zhou, G; Wei, SQ; Li, YD; Zheng LR(郑黎荣)
2016
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
EISSN1521-3773
Volume55Issue:36Pages:10800-10805
SubtypeArticle
AbstractA new strategy for achieving stable Co single atoms (SAs) on nitrogen-doped porous carbon with high metal loading over 4wt% is reported. The strategy is based on a pyrolysis process of predesigned bimetallic Zn/Co metal-organic frameworks, during which Co can be reduced by carbonization of the organic linker and Zn is selectively evaporated away at high temperatures above 800 degrees C. The spherical aberration correction electron microscopy and extended X-ray absorption fine structure measurements both confirm the atomic dispersion of Co atoms stabilized by as-generated N-doped porous carbon. Surprisingly, the obtained Co-N-x single sites exhibit superior ORR performance with a half-wave potential (0.881V) that is more positive than commercial Pt/C (0.811V) and most reported non-precious metal catalysts. Durability tests revealed that the Co single atoms exhibit outstanding chemical stability during electrocatalysis and thermal stability that resists sintering at 900 degrees C. Our findings open up a new routine for general and practical synthesis of a variety of materials bearing single atoms, which could facilitate new discoveries at the atomic scale in condensed materials.
Keywordcoordination control metal single atoms metal-organic frameworks oxygen reduction reaction
DOI10.1002/anie.201604802
WOS KeywordMETAL-ORGANIC FRAMEWORK ; ZEOLITIC IMIDAZOLATE FRAMEWORKS ; NITROGEN-DOPED GRAPHENE ; CO OXIDATION ; FUEL-CELLS ; Z-CONTRAST ; ELECTROCATALYSTS ; SITES ; IRON ; IDENTIFICATION
Indexed BySCI
Language英语
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000383473600050
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/260277
Collection中国科学院高能物理研究所
Affiliation中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Yin, PQ,Yao, T,Wu, Y,et al. Single Cobalt Atoms with Precise N-Coordination as Superior Oxygen Reduction Reaction Catalysts[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2016,55(36):10800-10805.
APA Yin, PQ.,Yao, T.,Wu, Y.,Zheng, LR.,Lin, Y.,...&郑黎荣.(2016).Single Cobalt Atoms with Precise N-Coordination as Superior Oxygen Reduction Reaction Catalysts.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,55(36),10800-10805.
MLA Yin, PQ,et al."Single Cobalt Atoms with Precise N-Coordination as Superior Oxygen Reduction Reaction Catalysts".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 55.36(2016):10800-10805.
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