Phase and composition controllable synthesis of cobalt manganese spinel nanoparticles towards efficient oxygen electrocatalysis

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题名:	Phase and composition controllable synthesis of cobalt manganese spinel nanoparticles towards efficient oxygen electrocatalysis
作者:	鄭芳怡;Li, Chun;Han, Xiaopeng;Cheng, Fangyi;Hu, Yuxiang;Chen, Chengcheng;Chen, Jun
贡献者:	地球科學學院大氣科學學系
关键词:	639/301/299/161/886;639/301/299/161/891;639/301/357/551;639/925/357/354;Batteries;Catalysis;Catalysts;Chemical precipitation;Cobalt;Composition;Crystallization;Crystallography;Electrochemistry;Energy storage;Fuel cells;Humanities and Social Sciences;Laboratories;Magnetism;Manganese;Metal air batteries;Metal oxides;Microscopy;multidisciplinary;Nanocomposites;Nanoparticles;Oxidation;Oxides;Oxygen;Rechargeable batteries;Science;Science (multidisciplinary);Spinel;Stability;Symmetry;Synthesis
日期:	2015-06-04
上传时间:	2026-04-21 14:05:35 (UTC+8)
出版者:	Nature Publishing Group;London: Springer Science and Business Media LLC
摘要:	摘要： AbstractSpinel-type oxides are technologically important in many fields, including electronics, magnetism, catalysis and electrochemical energy storage and conversion. Typically, these materials are prepared by conventional ceramic routes that are energy consuming and offer limited control over shape and size. Moreover, for mixed-metal oxide spinels (for example, CoxMn3−xO4), the crystallographic phase sensitively correlates with the metal ratio, posing great challenges to synthesize active product with simultaneously tuned phase and composition. Here we report a general synthesis of ultrasmall cobalt manganese spinels with tailored structural symmetry and composition through facile solution-based oxidation–precipitation and insertion–crystallization process at modest condition. As an example application, the nanocrystalline spinels catalyse the oxygen reduction/evolution reactions, showing phase and composition co-dependent performance. Furthermore, the mild synthetic strategy allows the formation of homogeneous and strongly coupled spinel/carbon nanocomposites, which exhibit comparable activity but superior durability to Pt/C and serve as efficient catalysts to build rechargeable Zn–air and Li–air batteries. 其他題名： Nat Commun 出版者： London: Springer Science and Business Media LLC 出版日期： 2015-06-04 出處： Nature Communications, 2015-06, Vol.6 (1), p.7345--7345, Article 7345 資源來源： Publicly Available Content Database 版權： The Author(s) 2015 版權： Copyright Nature Publishing Group Jun 2015 版權： Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 2015 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 識別號： ISSN: 2041-1723 識別號： EISSN: 2041-1723 識別號： DOI: 10.1038/ncomms8345 識別號： PMID: 26040417
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