磷化物
纳米结构
材料科学
锡
纳米技术
阳极
纳米颗粒
化学工程
电极
纳米团簇
锂(药物)
化学
冶金
金属
物理化学
医学
工程类
内分泌学
作者
Zhen Kong,Zhenlin Liang,Meiling Huang,Huayao Tu,Kang Zhang,Yongliang Shao,Yongzhong Wu,Xiaopeng Hao
标识
DOI:10.1016/j.jallcom.2022.167328
摘要
The rational design of nanostructure is crucial to achieving high-rate and long-term cycling performance for electrodes. Herein, the tin phosphide composites with yolk–shell nanostructure (SnxPy/NG) are designed and synthesized by one-step carbonization and phosphorization from the precursor of Sn6O4(OH)4/NG. The SnxPy/NG electrode with yolk–shell nanostructure shows energy storage properties superior to that of nanoclusters or nanoparticles. The void space in yolk–shell nanostructure relieves the huge volume expansion, and the unique phase hybridization of Sn4P3 and SnP0.94 promotes the reaction kinetics. Thus, SnxPy/NG delivers high-rate long-term cycling stability for Li-half cells (521.2 mA h g−1 maintained after 3000 cycles at 5.0 A g−1) and Na-half cells (203.1 mA h g−1 maintained after 300 cycles at 1.0 A g−1). The design strategy can promote the practical application of Sn-based phosphide and pave the way for designing and exploring other metal-based phosphide electrodes for energy storage.
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