Electrochemical impedance spectroscopy of phase transition materials

Francesco Ciucci, Wei Lai

Research output: Contribution to journalArticle

  • 16 Citations

Abstract

In this paper the electrochemical impedance response of phase transition materials is investigated within the Cahn-Hilliard framework. The application of regular perturbation techniques allows the determination of analytical expressions for stable perturbations around constant initial condition. If the initial condition corresponds to a steady state configuration with coexistence of two phases on the sample, then approximate analytical expressions can be found by suitable modification of the boundary conditions. In particular, the impedance response of a particle being synchronously charged/discharged on both sides (reflective conditions), featuring two phases and a phase transition region, is equivalent to the impedance response of a particle of smaller size allowing current go through (absorbing conditions).

LanguageEnglish (US)
Pages205-216
Number of pages12
JournalElectrochimica Acta
Volume81
DOIs
StatePublished - Oct 30 2012

Profile

Electrochemical impedance spectroscopy
Phase transitions
Perturbation techniques
Boundary conditions

Keywords

  • Impedance spectroscopy
  • Intercalation
  • Lithium battery
  • Phase transition

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Electrochemical impedance spectroscopy of phase transition materials. / Ciucci, Francesco; Lai, Wei.

In: Electrochimica Acta, Vol. 81, 30.10.2012, p. 205-216.

Research output: Contribution to journalArticle

@article{384ebbbd4b9247eaa5b6cf06aa9be1bf,
title = "Electrochemical impedance spectroscopy of phase transition materials",
abstract = "In this paper the electrochemical impedance response of phase transition materials is investigated within the Cahn-Hilliard framework. The application of regular perturbation techniques allows the determination of analytical expressions for stable perturbations around constant initial condition. If the initial condition corresponds to a steady state configuration with coexistence of two phases on the sample, then approximate analytical expressions can be found by suitable modification of the boundary conditions. In particular, the impedance response of a particle being synchronously charged/discharged on both sides (reflective conditions), featuring two phases and a phase transition region, is equivalent to the impedance response of a particle of smaller size allowing current go through (absorbing conditions).",
keywords = "Impedance spectroscopy, Intercalation, Lithium battery, Phase transition",
author = "Francesco Ciucci and Wei Lai",
year = "2012",
month = "10",
day = "30",
doi = "10.1016/j.electacta.2012.07.009",
language = "English (US)",
volume = "81",
pages = "205--216",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Electrochemical impedance spectroscopy of phase transition materials

AU - Ciucci,Francesco

AU - Lai,Wei

PY - 2012/10/30

Y1 - 2012/10/30

N2 - In this paper the electrochemical impedance response of phase transition materials is investigated within the Cahn-Hilliard framework. The application of regular perturbation techniques allows the determination of analytical expressions for stable perturbations around constant initial condition. If the initial condition corresponds to a steady state configuration with coexistence of two phases on the sample, then approximate analytical expressions can be found by suitable modification of the boundary conditions. In particular, the impedance response of a particle being synchronously charged/discharged on both sides (reflective conditions), featuring two phases and a phase transition region, is equivalent to the impedance response of a particle of smaller size allowing current go through (absorbing conditions).

AB - In this paper the electrochemical impedance response of phase transition materials is investigated within the Cahn-Hilliard framework. The application of regular perturbation techniques allows the determination of analytical expressions for stable perturbations around constant initial condition. If the initial condition corresponds to a steady state configuration with coexistence of two phases on the sample, then approximate analytical expressions can be found by suitable modification of the boundary conditions. In particular, the impedance response of a particle being synchronously charged/discharged on both sides (reflective conditions), featuring two phases and a phase transition region, is equivalent to the impedance response of a particle of smaller size allowing current go through (absorbing conditions).

KW - Impedance spectroscopy

KW - Intercalation

KW - Lithium battery

KW - Phase transition

UR - http://www.scopus.com/inward/record.url?scp=84865304764&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865304764&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2012.07.009

DO - 10.1016/j.electacta.2012.07.009

M3 - Article

VL - 81

SP - 205

EP - 216

JO - Electrochimica Acta

T2 - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -