Hao Qiuyan, Cui Guoliang, Zhao Yan, Bakenov Zhumabay
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China.
Institute of Batteries LLC, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Nur-Sultan 010000, Kazakhstan.
Nanomaterials (Basel). 2019 Sep 5;9(9):1256. doi: 10.3390/nano9091256.
A simple method is developed for the preparation of MoSe/MoO composite with a flower-like structure for high-performance lithium-ion batteries (LIBs). MoSe could lead to fast and facile movement of Li due to its larger interlayer spacing. Meanwhile, MoO could protect the lamellar structure of MoSe from being destroyed in the charging/discharging processes to maintain the required active surface to electrolytes. In addition, the flower-like structure of the composite could effectively alleviate the volume expansion during charging/discharging. As LIBs are anode material, MoSe/MoO composite demonstrates an excellent specific discharge capacity of 1042 mAh g after 100 cycles at 0.1 A g, which is attributed to the synergistic effects of MoSe and MoO in the composite.
开发了一种简单的方法来制备具有花状结构的MoSe/MoO复合材料，用于高性能锂离子电池（LIBs）。由于MoSe的层间距较大，它可以使Li快速且容易地移动。同时，MoO可以保护MoSe的层状结构在充电/放电过程中不被破坏，以保持与电解质所需的活性表面。此外，复合材料的花状结构可以有效缓解充电/放电过程中的体积膨胀。作为LIBs的负极材料，MoSe/MoO复合材料在0.1 A g下循环100次后表现出优异的比放电容量，为1042 mAh g，这归因于复合材料中MoSe和MoO的协同效应。
