Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes

Jianqiu Deng; Zhouguang Lu; C. Y. Chung; Xiaodong Han; Zhongmin Wang; Huaiying Zhou

doi:10.1016/j.apsusc.2014.06.162

Author(s)

Jianqiu Deng
Zhouguang Lu
Xiaodong Han
Zhongmin Wang
Huaiying Zhou

Detail(s)

Original language	English
Pages (from-to)	936-941
Journal / Publication	Applied Surface Science
Volume	314
Publication status	Published - 30 Sept 2014

Link(s)

DOI	DOI https://doi.org/10.1016/j.apsusc.2014.06.162 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84906782630&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(d0ef47de-045c-426f-90a2-0e9769c3582b).html

Abstract

Li₄Ti₅O₁₂ thin film electrodes are successfully deposited on Pt/Ti/SiO₂/Si substrates by pulsed laser deposition (PLD) technique. The microstructure and morphology of Li ₄Ti₅O₁₂ thin films are characterized by XRD and ESEM. The electrochemical properties of Li₄Ti₅O ₁₂ thin film electrodes are evaluated by galvanostatic cycling test. The kinetic behavior of lithium ions in Li₄Ti₅O ₁₂ thin film electrodes is also conducted using cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS). Li₄Ti₅O₁₂ thin film electrodes show favorable specific capacities and cycle performance. The chemical diffusion coefficients are found to be in a range of 10^-15 to 10^-12 cm² s^-1 determined by GITT method. The kinetic parameters obtained from impedance spectra as a function of the cell voltage are investigated in details. The decrease of the charge-transfer resistance (R_ct) can be explained by the two-phase transition during lithium insertion into Li₄Ti₅O₁₂. © 2014 Elsevier B.V.

Research Area(s)

Anode materials, Diffusion kinetics, Electrochemical performance, Lithium ion batteries, Thin film

SDG 7 - Affordable and Clean Energy

Citation Format(s)

[ RIS ] [ BibTeX ]

Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes. / Deng, Jianqiu; Lu, Zhouguang; Chung, C. Y. et al.
In: Applied Surface Science, Vol. 314, 30.09.2014, p. 936-941.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Deng, J, Lu, Z, Chung, CY, Han, X, Wang, Z & Zhou, H 2014, 'Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes', Applied Surface Science, vol. 314, pp. 936-941. https://doi.org/10.1016/j.apsusc.2014.06.162

Deng, J., Lu, Z., Chung, C. Y., Han, X., Wang, Z., & Zhou, H. (2014). Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes. Applied Surface Science, 314, 936-941. https://doi.org/10.1016/j.apsusc.2014.06.162

Deng J, Lu Z, Chung CY, Han X, Wang Z, Zhou H. Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes. Applied Surface Science. 2014 Sept 30;314:936-941. doi: 10.1016/j.apsusc.2014.06.162

Deng, Jianqiu ; Lu, Zhouguang ; Chung, C. Y. et al. / Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes. In: Applied Surface Science. 2014 ; Vol. 314. pp. 936-941.