Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes

Jeanne M. McGraw; Christian S. Bahn; Philip A. Parilla; John D. Perkins; Dennis W. Readey; David S. Ginley

doi:10.1016/S0013-4686(99)00203-0

Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes

Jeanne M. McGraw, Christian S. Bahn, Philip A. Parilla, John D. Perkins, Dennis W. Readey, David S. Ginley

Research output: Contribution to journal › Article › peer-review

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Abstract

Thin films of V₂O₅ and LiCoO₂ were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, D were measured by potentiostatic intermittent titration technique (PITT). The PLD-grown V₂O₅ and LiCoO₂ films are electrochemically similar to bulk powders and thin films produced by other techniques. In crystalline V₂O₅, the maximum and minimum D were found to be 1.7 × 10^-12 cm² s^-1 and 5.8 × 10^-15 cm² s^-1 respectively, with a general trend for D̃ to rise in single-phase regions. In amorphous V₂O₅ films, D̃ was initially 5 × 10^-13 cm² s^-1 and decreased steadily to 1.2 × 10^-13 cm² s^-1 at Li_0.4V₂O₅. The decrease in D̃ then became more gradual with a final value of 5.52 × 10^-14 cm² s^-1 at Li_1.5V₂O₅. The chemical diffusion coefficient of Li in LiCoO₂ films ranged from 1 × 10^-12-4 × 10^-11 cm² s^-1 with a pronounced minimum at Li_0.7CoO₂. Thin films of LiCo_0.5Al_0.5O₂ also deposited by PLD exhibited limited cycling capabilities and an upper bound of D̃ = 9 × 10^-13 cm² s^-1.

Original language	American English
Pages (from-to)	187-196
Number of pages	10
Journal	Electrochimica Acta
Volume	45
Issue number	1-2
DOIs	https://doi.org/10.1016/S0013-4686(99)00203-0 https://doi.org/10.1016/S0013-4686(99)00203-0
State	Published - 1999

NREL Publication Number

NREL/JA-520-27895

Keywords

Amorphous
Chronoamperometry
Crystalline
Li diffusion
Licoalo
Licoo
Pulsed laser deposition
Thin film
Vo

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@article{5409d6ca2b4045939634009bc1c1fb71,

title = "Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes",

abstract = "Thin films of V2O5 and LiCoO2 were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, D were measured by potentiostatic intermittent titration technique (PITT). The PLD-grown V2O5 and LiCoO2 films are electrochemically similar to bulk powders and thin films produced by other techniques. In crystalline V2O5, the maximum and minimum D were found to be 1.7 × 10-12 cm2 s-1 and 5.8 × 10-15 cm2 s-1 respectively, with a general trend for {\~D} to rise in single-phase regions. In amorphous V2O5 films, {\~D} was initially 5 × 10-13 cm2 s-1 and decreased steadily to 1.2 × 10-13 cm2 s-1 at Li0.4V2O5. The decrease in {\~D} then became more gradual with a final value of 5.52 × 10-14 cm2 s-1 at Li1.5V2O5. The chemical diffusion coefficient of Li in LiCoO2 films ranged from 1 × 10-12-4 × 10-11 cm2 s-1 with a pronounced minimum at Li0.7CoO2. Thin films of LiCo0.5Al0.5O2 also deposited by PLD exhibited limited cycling capabilities and an upper bound of {\~D} = 9 × 10-13 cm2 s-1.",

keywords = "Amorphous, Chronoamperometry, Crystalline, Li diffusion, Licoalo, Licoo, Pulsed laser deposition, Thin film, Vo",

author = "McGraw, {Jeanne M.} and Bahn, {Christian S.} and Parilla, {Philip A.} and Perkins, {John D.} and Readey, {Dennis W.} and Ginley, {David S.}",

year = "1999",

doi = "10.1016/S0013-4686(99)00203-0",

language = "American English",

volume = "45",

pages = "187--196",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd.",

number = "1-2",

}

TY - JOUR

T1 - Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes

AU - McGraw, Jeanne M.

AU - Bahn, Christian S.

AU - Parilla, Philip A.

AU - Perkins, John D.

AU - Readey, Dennis W.

AU - Ginley, David S.

PY - 1999

Y1 - 1999

N2 - Thin films of V2O5 and LiCoO2 were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, D were measured by potentiostatic intermittent titration technique (PITT). The PLD-grown V2O5 and LiCoO2 films are electrochemically similar to bulk powders and thin films produced by other techniques. In crystalline V2O5, the maximum and minimum D were found to be 1.7 × 10-12 cm2 s-1 and 5.8 × 10-15 cm2 s-1 respectively, with a general trend for D̃ to rise in single-phase regions. In amorphous V2O5 films, D̃ was initially 5 × 10-13 cm2 s-1 and decreased steadily to 1.2 × 10-13 cm2 s-1 at Li0.4V2O5. The decrease in D̃ then became more gradual with a final value of 5.52 × 10-14 cm2 s-1 at Li1.5V2O5. The chemical diffusion coefficient of Li in LiCoO2 films ranged from 1 × 10-12-4 × 10-11 cm2 s-1 with a pronounced minimum at Li0.7CoO2. Thin films of LiCo0.5Al0.5O2 also deposited by PLD exhibited limited cycling capabilities and an upper bound of D̃ = 9 × 10-13 cm2 s-1.

AB - Thin films of V2O5 and LiCoO2 were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, D were measured by potentiostatic intermittent titration technique (PITT). The PLD-grown V2O5 and LiCoO2 films are electrochemically similar to bulk powders and thin films produced by other techniques. In crystalline V2O5, the maximum and minimum D were found to be 1.7 × 10-12 cm2 s-1 and 5.8 × 10-15 cm2 s-1 respectively, with a general trend for D̃ to rise in single-phase regions. In amorphous V2O5 films, D̃ was initially 5 × 10-13 cm2 s-1 and decreased steadily to 1.2 × 10-13 cm2 s-1 at Li0.4V2O5. The decrease in D̃ then became more gradual with a final value of 5.52 × 10-14 cm2 s-1 at Li1.5V2O5. The chemical diffusion coefficient of Li in LiCoO2 films ranged from 1 × 10-12-4 × 10-11 cm2 s-1 with a pronounced minimum at Li0.7CoO2. Thin films of LiCo0.5Al0.5O2 also deposited by PLD exhibited limited cycling capabilities and an upper bound of D̃ = 9 × 10-13 cm2 s-1.

KW - Amorphous

KW - Chronoamperometry

KW - Crystalline

KW - Li diffusion

KW - Licoalo

KW - Licoo

KW - Pulsed laser deposition

KW - Thin film

KW - Vo

UR - http://www.scopus.com/inward/record.url?scp=0033191711&partnerID=8YFLogxK

U2 - 10.1016/S0013-4686(99)00203-0

DO - 10.1016/S0013-4686(99)00203-0

M3 - Article

AN - SCOPUS:0033191711

SN - 0013-4686

VL - 45

SP - 187

EP - 196

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 1-2

ER -

Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes

Abstract

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Keywords

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