阳极
碳化
钾
电化学
钠
化学工程
材料科学
复合材料
同步加速器
复合数
纳米颗粒
碳纤维
化学
纳米技术
电极
冶金
物理化学
工程类
物理
核物理学
扫描电子显微镜
作者
Qiannan Liu,Zhe Hu,Yaru Liang,Lin Li,Chao Zou,Huile Jin,Shun Wang,Haijun Lu,Qinfen Gu,Shulei Chou,Yong Liu,Shi Xue Dou
标识
DOI:10.1002/anie.201913683
摘要
Hierarchical hollow CoP and carbon composites were obtained through a facile synthetic method, where carbonization and phosphorization of the precursor were completed within one single step. The composites are composed of hollow CoP@C spheres, which are further made up of CoP nanoparticles with a thin outer carbon layer. Electrochemical performances of the prepared CoP@C composites as anodes for sodium and potassium storage were evaluated and compared. In situ TEM, in situ synchrotron XRD, and DFT calculations were conducted to study the structural evolution and the interaction between Na/K and CoP during cycling processes. Benefiting from the synergistic effect of conductive carbon layer and hierarchical hollow structure, the as-prepared CoP@C composites demonstrate superior sodium and potassium storage capability as anode materials for rechargeable batteries.
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