材料科学
阳极
杂原子
阴极
电化学
纳米复合材料
微观结构
电池(电)
碳纤维
化学工程
锂(药物)
纳米技术
兴奋剂
复合材料
复合数
光电子学
戒指(化学)
电极
化学
有机化学
医学
功率(物理)
物理
物理化学
量子力学
内分泌学
工程类
作者
Peiyu Wang,Guoheng Zhang,Wanjun Chen,Yang Bao,Xiangli Wang,Qiong Chen,Liwei Liu,Haiyan Jiao,Xiaoyan Deng,Le Yang,Wenting Zhu,Huan Liu
标识
DOI:10.1016/j.colsurfa.2023.132861
摘要
Mg-Li hybrid batteries (MLHBs) are regarded as promising candidates for electrical energy devices because they can combine the high capacity as well as fast ion transfer advantages of cathodes in lithium-ion batteries (LIBs) and the great safety feature of Mg metal anode in MLHBs. Here, we report a core-shell nanocomposite cathode material (T-Nb2O5 @C-PZS) for MLHB application, where heteroatoms-doped carbon layer is wrapped on T-Nb2O5 microparticles. Owning to the excellent pseudocapacitive performance from T-Nb2O5 core and the abundant N, S and P heteroatoms from the carbon shell, the T-Nb2O5 @C-PZS cathode shows a high discharge capacity (198 mAh g−1 at 0.1 A g−1), excellent rate performance (100 mAh g−1 at 2 A g−1) and outstanding cyclic stability (a capacity retention rate of 85% after 5000 cycles at 1.0 A g−1), when the Mg metal is used as the anode. The advantages of the preparation, microstructure as well as electrochemical performance of T-Nb2O5 @C-PZS make it a promising cathode for MLHBs.
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