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

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

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

28 Citations (Scopus)

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.

Original language	English
Pages (from-to)	936-941
Journal	Applied Surface Science
Volume	314
DOIs	https://doi.org/10.1016/j.apsusc.2014.06.162
Publication status	Published - 30 Sept 2014

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SDG 7 Affordable and Clean Energy

Research Keywords

Anode materials
Diffusion kinetics
Electrochemical performance
Lithium ion batteries
Thin film

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10.1016/j.apsusc.2014.06.162

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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 (Rct) can be explained by the two-phase transition during lithium insertion into Li4Ti5O12. {\textcopyright} 2014 Elsevier B.V.",

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

author = "Jianqiu Deng and Zhouguang Lu and Chung, {C. Y.} and Xiaodong Han and Zhongmin Wang and Huaiying Zhou",

year = "2014",

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doi = "10.1016/j.apsusc.2014.06.162",

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T1 - Electrochemical performance and kinetic behavior of lithium ion in Li 4Ti5O12 thin film electrodes

AU - Deng, Jianqiu

AU - Lu, Zhouguang

AU - Chung, C. Y.

AU - Han, Xiaodong

AU - Wang, Zhongmin

AU - Zhou, Huaiying

PY - 2014/9/30

Y1 - 2014/9/30

N2 - 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 (Rct) can be explained by the two-phase transition during lithium insertion into Li4Ti5O12. © 2014 Elsevier B.V.

AB - 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 (Rct) can be explained by the two-phase transition during lithium insertion into Li4Ti5O12. © 2014 Elsevier B.V.

KW - Anode materials

KW - Diffusion kinetics

KW - Electrochemical performance

KW - Lithium ion batteries

KW - Thin film

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U2 - 10.1016/j.apsusc.2014.06.162

DO - 10.1016/j.apsusc.2014.06.162

M3 - RGC 21 - Publication in refereed journal

SN - 0169-4332

VL - 314

SP - 936

EP - 941

JO - Applied Surface Science

JF - Applied Surface Science

ER -

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

Abstract

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