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

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

2 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 Jan 1
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

Fingerprint

Annealing
Thin films
Processing
Redox reactions
Electrochemical properties
Phase composition
Magnetron sputtering
Anodes
Cracks
Oxygen
Ions
Substrates
Temperature
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Tsai, S. Y., Fung, K. Z., & Ni, C. T. (2015). Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications. In J. W. Fergus (Ed.), Batteries (2 ed., pp. 37-43). (ECS Transactions; Vol. 68, No. 2). Electrochemical Society Inc.. https://doi.org/10.1149/06802.0037ecst
Tsai, Shu Yi ; Fung, Kuan Zong ; Ni, Chung Ta. / Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications. Batteries. editor / J. W. Fergus. 2. ed. Electrochemical Society Inc., 2015. pp. 37-43 (ECS Transactions; 2).
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Tsai, SY, Fung, KZ & Ni, CT 2015, Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications. in JW Fergus (ed.), Batteries. 2 edn, ECS Transactions, no. 2, vol. 68, Electrochemical Society Inc., pp. 37-43, 14th 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, 15-07-26. https://doi.org/10.1149/06802.0037ecst

Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications. / Tsai, Shu Yi; Fung, Kuan Zong; Ni, Chung Ta.

Batteries. ed. / J. W. Fergus. 2. ed. Electrochemical Society Inc., 2015. p. 37-43 (ECS Transactions; Vol. 68, No. 2).

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

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N2 - 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.

AB - 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.

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Tsai SY, Fung KZ, Ni CT. Conductivity enhancement and thin-film processing of Li4Ti5O12(LTO) Spinel for Li battery applications. In Fergus JW, editor, Batteries. 2 ed. Electrochemical Society Inc. 2015. p. 37-43. (ECS Transactions; 2). https://doi.org/10.1149/06802.0037ecst