Mo-Doped SnO2 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; Jin Ke; Xiping Huang; Chen Bai; Huafeng Dong; Deping Xiong; Miao He

doi:10.1021/acs.langmuir.0c01604

Mo-Doped SnO₂ Nanoparticles Embedded in Ultrathin Graphite Nanosheets as a High-Reversible-Capacity, Superior-Rate, and Long-Cycle-Life Anode Material for Lithium-Ion Batteries

Langmuir. 2020 Aug 11;36(31):9276-9283. doi: 10.1021/acs.langmuir.0c01604. Epub 2020 Jul 27.

Authors

Yefeng Feng¹, Kaidan Wu², Yukun Sun², Zhiling Guo¹, Jin Ke¹, Xiping Huang¹, Chen Bai¹, Huafeng Dong¹, Deping Xiong¹, Miao He¹

Affiliations

¹ School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, P. R. China.
² School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, P. R. China.

PMID: 32674578
DOI: 10.1021/acs.langmuir.0c01604

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).