首页|Preparation of SnO2-Nb-C composite by hydrothermal and ball milling processes for high-performance lithium-ion batteries
Preparation of SnO2-Nb-C composite by hydrothermal and ball milling processes for high-performance lithium-ion batteries
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NSTL
Elsevier
A novel ternary SnO2-Nb-C composite, which consists of SnO2 nanoparticles and a fraction of Niobium (Nb) embedded in flake carbon, is synthesized by hydrothermal and ball milling method. To be used as an anode material for lithium-ion batteries (LIBs), the SnO2-Nb-C composite is smoothly doped with n-type elements owing to the various valences of Nb, which enhances the electronic conductivity of the electrode, and effectively inhibits volume changes in SnO2 during the cycle process, thus improving the electrode's electrochemical performance. Therefore, at 0.2 A g-1, the capacity is 956 mAh g-1 after 100 cycles, and the rate capacity is 1130.2 mAh g-1. Furthermore, at 1.0 A g-1, the specific discharge capacity is 1077.0 mAh g-1 after 500 cycles. According to the characterization results, the SnO2-Nb-C nanocomposite can be regarded as a potential anode material for LIBs.
NSTL
Elsevier
