Sustainable one step process for making carbon-free TiO 2 anodes and sodium-ion battery electrochemistry

Tandeep S. Chadha, Prasit Kumar Dutta, Ramesh Raliya, Sagar Mitra, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Electrodes with a carbon-free architecture impart a sustainable solution by eliminating side reactions. Such designs are required for anode systems, especially for sodium-ion batteries where the capacity contribution from carbon is noticed. Herein, carbon-free TiO 2 is prepared in the monolithic dendritic form via a facile single-step aerosol vapor deposition technique, grown onto a stainless steel current collector. The single crystalline nature of the anatase dendrites explicitly provides detailed crystallographic analysis. Herein, we have realized an escalation of the rutile phase with the existing anatase phase upon cycling, which is depicted as a moiré pattern, while evaluating the structure through TEM studies. As the anode is carbon and binder-free, the overall material is electrochemically active, and hence appreciably improves the volumetric energy-density. Here, we observe a long cycle life of 1000 cycles from the additive-free anatase dendrites with an adequate capacity retention of 85.1%. Therefore, we believe that our single-step fabrication process to procure additive-free monolithic electrodes is a forthcoming paramount technique to produce sodium-ion batteries on mass.

Original languageEnglish (US)
Pages (from-to)1582-1587
Number of pages6
JournalSustainable Energy and Fuels
Volume2
Issue number7
DOIs
StatePublished - 2018
Externally publishedYes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology

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