作者：HN Yang, SJ Ji, JP Yin, Wei Feng, WQ Kong, ZS Wen
关键字：Solvothermal method, Ni metal organic frame, Interface bonding, Silicon anode
论文来源：期刊
具体来源：Journal of Colloid and Interface Science
发表时间：2020年

Poor electrochemical kinetics caused by the unstable structure for the dramatically volumetric expansion (>300%) hinders the application of silicon in rechargeable lithium ion batteries. Si@C-Ni-MOF composites with petal-like Ni-MOFs as the skeleton and Si@C nanoparticles as the active center were synthesized via facile solvothermal process. The resulting Ni-MOF-Si@C material maintains admirable stability on cycling, and its capacity remains 1545.3 mAh g-1 with a high capacity retention rate of 99.79% after 300 cycles at the current density of 200mA g-1. The enhancement on the kinetics is obtained, attributing to the porous structure created by the petal-like Ni-MOFs and the strong interface bonding between Si@C and Ni-MOFs.

https://doi.org/10.1016/j.jcis.2020.10.102