Mo-Doped SnO<sub>2</sub> Nanoparticles Embedded in Ultrathin Graphite Nanosheets as a High-Reversible-Capacity, Superior-Rate, and Long-Cycle-Life Anode Material for Lithium-Ion Batteries
Yefeng Feng, Kaidan Wu, Yukun Sun, Zhiling Guo, Ke Jin, Xiping Huang, Chen Bai, Huafeng Dong, Deping Xiong, Miao He
Abstract
A new ternary Mo–SnO2–graphite composite has been constructed via hydrothermal and ball milling. The Mo/SnO2 hybrids were homogeneously dispersed in graphite nanosheets. In the Mo–SnO2–graphite, Mo can inhibit the Sn nanoparticle aggregation, enhance the reversible conversion reaction in lithiation, and improve the electrochemical performance. Consequently, the Mo–SnO2–graphite composite contributes a high capacity of 1317.4 mAh g–1 at 0.2 A g–1 after 200 cycles, remarkable rate property of 514.0 mAh g–1 at 5 A g–1, and long-term cyclic stabilization of 759.0 mAh g–1 after 950 cycles at 1.0 A g–1. With outstanding electrochemical performance and facial synthesis, the ternary Mo–SnO2–graphite is a hopeful anode material for lithium-ion batteries (LIBs).