Synthesis of high volumetric capacity graphene oxide-supported tellurantimony Na- and Li-ion battery anodes by hydrogen peroxide sol gel processing

Dmitry A. Grishanov, Alexey A. Mikhaylov, Alexander G. Medvedev, Jenny Gun, Arun Nagasubramanian, Srinivasan Madhavi, Ovadia Lev*, Petr V. Prikhodchenko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

High-charge-capacity sodium-ion battery anodes made of Sb2Te3@reduced graphene oxide are reported for the first time. Uniform nano-coating of graphene oxide is carried out from common sol of peroxotellurate and peroxoantimonate under room temperature processing. Reduction by hydrazine under glycerol reflux yields Sb2Te3@reduced graphene oxide. The electrodes exhibit exceptionally high volumetric charge capacity, above 2300 mAh cm−3 at 100 mA g−1 current density, showing very good rate capabilities and retaining 60% of this capacity even at 2000 mA g−1. A comparison of sodiation and lithiation shows that lithiation exhibits better volumetric charge capacity, but surprisingly only marginally better relative rate capability retention at 2000 mA g−1. Tellurium-based electrodes are attractive due to the high volumetric charge capacity of Te, its very high electric conductivity, and the low relative expansion upon lithiation/sodiation.

Original languageAmerican English
Pages (from-to)165-171
Number of pages7
JournalJournal of Colloid and Interface Science
Volume512
DOIs
StatePublished - 15 Feb 2018

Bibliographical note

Publisher Copyright:
© 2017

Keywords

  • Antimony
  • Batteries
  • Hydrogen peroxide
  • Sodium
  • Sol gel
  • Telluride

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