纳米颗粒
材料科学
合金
化学工程
多硫化物
金属
双功能
相(物质)
制作
纳米技术
电解质
化学
冶金
催化作用
电极
有机化学
医学
替代医学
物理化学
病理
工程类
生物化学
作者
Yanping Chen,Yiming Yao,Wen Zhao,Lifeng Wang,Haitao Li,Jiangwei Zhang,Baojun Wang,Yi Jia,Riguang Zhang,Yan Yu,Jian Liu
标识
DOI:10.1038/s41467-023-42941-9
摘要
Abstract Complex metal nanoparticles distributed uniformly on supports demonstrate distinctive physicochemical properties and thus attract a wide attention for applications. The commonly used wet chemistry methods display limitations to achieve the nanoparticle structure design and uniform dispersion simultaneously. Solid-phase synthesis serves as an interesting strategy which can achieve the fabrication of complex metal nanoparticles on supports. Herein, the solid-phase synthesis strategy is developed to precisely synthesize uniformly distributed CoFe@FeO x core@shell nanoparticles. Fe atoms are preferentially exsolved from CoFe alloy bulk to the surface and then be carburized into a Fe x C shell under thermal syngas atmosphere, subsequently the formed Fe x C shell is passivated by air, obtaining CoFe@FeO x with a CoFe alloy core and a FeO x shell. This strategy is universal for the synthesis of MFe@FeO x (M = Co, Ni, Mn). The CoFe@FeO x exhibits bifunctional effect on regulating polysulfides as the separator coating layer for Li-S and Na-S batteries. This method could be developed into solid-phase synthetic systems to construct well distributed complex metal nanoparticles.
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