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Large-size carbon-coated SnO2 composite as improved anode material for lithium ion batteries
2020/9/27 13:08:07 admin

SnO(2)microbelt coating carbon composite was fabricated via electrospinning precursor, thermal treatment, and polymer adhesion process. Primarily, the solvent of electrospinning jet quickly evaporates in a relatively high-temperature environment; intermediate microtubules simultaneously form when the solute containing tin salt and binder converge on the skin of the jet; then, the microtubules collapse into flat microbelt product under the action of atmospheric pressure. Subsequently, SnO(2)microbelts can be obtained by annealing the electrospinning products. Finally, the SnO2@C microbelts are synthesized by dopamine polymerization and carbonization process. The SnO2@C microbelts present a regular strip with width similar to 1.2 mu m and thickness similar to 120 nm. Because of the synergy effect of carbon coating and SnO(2)microbelt design project, the composite shows superior lithium storage of 504 mAh g(-1)after 100 cycles at 0.2 A g(-1). The SnO2@C microbelts are expected to be competitive alternative anode material of next-generation LIBs.

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