Oriented, One-Dimensional Tin Dioxide–Titanium Dioxide Composites as Anode Materials for Lithium-Ion Batteries

Clayton T. Kacica, Louis S. Wang, Tandeep S. Chadha, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Highly oriented columnar nanostructures of tin dioxide (SnO2) and a composite tin dioxide material with a thin titanium dioxide coating (SnO2–TiO2) are fabricated using aerosol chemical vapor deposition (ACVD) and are utilized as high-capacity anode materials in lithium-ion batteries. The SnO2 nanostructures exhibit a specific capacity of 445 mAh g−1 after 100 cycles at a rate of 1 C, but experience substantial capacity fade at a charge rate of 2 C, and a capacity of 251 mAh g−1 after 100 cycles. To enhance the capacity retention a coating of TiO2 is applied to the electrodes. Comparatively, the SnO2–TiO2 electrode exhibits a capacity of 497 mAh g−1 after 100 cycles at a charge rate of 2 C. Diffusion measurements indicate that no inhibition of lithium diffusion occurs due to a thin TiO2 coating. The superior capacity retention of the composite electrode may be attributed to the protection of SnO2 from irreversible reactions using a TiO2 coating.

Original languageEnglish (US)
Pages (from-to)1966-1974
Number of pages9
JournalEnergy Technology
Volume6
Issue number10
DOIs
StatePublished - Oct 2018
Externally publishedYes

Keywords

  • aerosol
  • chemical vapor deposition
  • electrodes
  • lithium-ion batteries
  • nanostructures

ASJC Scopus subject areas

  • Energy(all)

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