Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Spinel Li4Ti5O12 has been considered as one of the most prospective anode materials for Li-ion microbatteries. Homogeneous and crack-free Li4Ti5O12 film with thickness around 200 nm have been deposited on Pt/Ti/SiO2/Si(100) substrate by r.f. magnetron sputtering. The influence of the post-annealing treatment on the phase composition, structure and electrochemical properties was studied. The Li/Ti molar ratio in the films decreased with an increasing oxygen fraction. The amount of Li4Ti5O12 phase increases with increasing annealing temperature from 500°C to 700°C. Electrochemical characterization of samples heat-treated at 600°C presents a redox reaction around 1.55 V indicating that the film contains Li4Ti5O12 spinel. The high capacity and good reversibility in the sample post-annealing treatment at 600 °C can be attributed to high crystallinity of Li4Ti5O12 and amorphous TiO2 phase.

Original languageEnglish
Title of host publicationBatteries
EditorsJ. W. Fergus
PublisherElectrochemical Society Inc.
Pages37-43
Number of pages7
Edition2
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2015
Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
Duration: 2015 Jul 262015 Jul 31

Publication series

NameECS Transactions
Number2
Volume68
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
CountryUnited Kingdom
CityGlasgow
Period15-07-2615-07-31

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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