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)
刊名ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2016
卷号55期号:36页码:10800-10805
关键词coordination control metal single atoms metal-organic frameworks oxygen reduction reaction
DOI10.1002/anie.201604802
文章类型期刊论文
英文摘要A 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.
类目[WOS]Chemistry, Multidisciplinary
关键词[WOS]METAL-ORGANIC FRAMEWORK ; ZEOLITIC IMIDAZOLATE FRAMEWORKS ; NITROGEN-DOPED GRAPHENE ; CO OXIDATION ; FUEL-CELLS ; Z-CONTRAST ; ELECTROCATALYSTS ; SITES ; IRON ; IDENTIFICATION
语种英语
WOS记录号WOS:000383473600050
引用统计
被引频次:94[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260277
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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
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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