Small-signal apparent diffusion impedance of intercalation battery electrodes

Wei Lai, Francesco Ciucci

Research output: Contribution to journalArticle

  • 33 Citations

Abstract

The small-signal apparent diffusion impedance of intercalation battery electrodes is studied on the basis of generalized Poisson-Nernst-Planck equations for planar, cylindrical, and spherical geometry. Compared with conventional treatment in tracking the concentration of neutral intercalation species as chemical diffusion, the present work focuses on the voltage and current terms of intercalating ions and electrons and discusses explicit physical meanings of these electrical terms, in the form of equivalent circuits. It can be shown that the present treatment generates the same results as those from conventional chemical diffusion when the electronic transference number is close to 1. Finally, the correlation between the frequency domain impedance methods and the time domain methods, such as chronoamperometry and chronopotentiometry, is discussed.

LanguageEnglish (US)
JournalJournal of the Electrochemical Society
Volume158
Issue number2
DOIs
StatePublished - 2011

Profile

Intercalation
intercalation
electric batteries
impedance
Electrodes
electrodes
Chronoamperometry
equivalent circuits
Equivalent circuits
Ions
Geometry
Electrons
Electric potential
electric potential
geometry
electronics
ions
electrons

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Small-signal apparent diffusion impedance of intercalation battery electrodes. / Lai, Wei; Ciucci, Francesco.

In: Journal of the Electrochemical Society, Vol. 158, No. 2, 2011.

Research output: Contribution to journalArticle

@article{58d89651ec5549ebacdea451cb09340a,
title = "Small-signal apparent diffusion impedance of intercalation battery electrodes",
abstract = "The small-signal apparent diffusion impedance of intercalation battery electrodes is studied on the basis of generalized Poisson-Nernst-Planck equations for planar, cylindrical, and spherical geometry. Compared with conventional treatment in tracking the concentration of neutral intercalation species as chemical diffusion, the present work focuses on the voltage and current terms of intercalating ions and electrons and discusses explicit physical meanings of these electrical terms, in the form of equivalent circuits. It can be shown that the present treatment generates the same results as those from conventional chemical diffusion when the electronic transference number is close to 1. Finally, the correlation between the frequency domain impedance methods and the time domain methods, such as chronoamperometry and chronopotentiometry, is discussed.",
author = "Wei Lai and Francesco Ciucci",
year = "2011",
doi = "10.1149/1.3515896",
language = "English (US)",
volume = "158",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "2",

}

TY - JOUR

T1 - Small-signal apparent diffusion impedance of intercalation battery electrodes

AU - Lai,Wei

AU - Ciucci,Francesco

PY - 2011

Y1 - 2011

N2 - The small-signal apparent diffusion impedance of intercalation battery electrodes is studied on the basis of generalized Poisson-Nernst-Planck equations for planar, cylindrical, and spherical geometry. Compared with conventional treatment in tracking the concentration of neutral intercalation species as chemical diffusion, the present work focuses on the voltage and current terms of intercalating ions and electrons and discusses explicit physical meanings of these electrical terms, in the form of equivalent circuits. It can be shown that the present treatment generates the same results as those from conventional chemical diffusion when the electronic transference number is close to 1. Finally, the correlation between the frequency domain impedance methods and the time domain methods, such as chronoamperometry and chronopotentiometry, is discussed.

AB - The small-signal apparent diffusion impedance of intercalation battery electrodes is studied on the basis of generalized Poisson-Nernst-Planck equations for planar, cylindrical, and spherical geometry. Compared with conventional treatment in tracking the concentration of neutral intercalation species as chemical diffusion, the present work focuses on the voltage and current terms of intercalating ions and electrons and discusses explicit physical meanings of these electrical terms, in the form of equivalent circuits. It can be shown that the present treatment generates the same results as those from conventional chemical diffusion when the electronic transference number is close to 1. Finally, the correlation between the frequency domain impedance methods and the time domain methods, such as chronoamperometry and chronopotentiometry, is discussed.

UR - http://www.scopus.com/inward/record.url?scp=78650752439&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78650752439&partnerID=8YFLogxK

U2 - 10.1149/1.3515896

DO - 10.1149/1.3515896

M3 - Article

VL - 158

JO - Journal of the Electrochemical Society

T2 - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 2

ER -