State analysis of lithium-ion batteries using discharge curves

K. Honkura, H. Honbo, Y. Koishikawa, T. Horiba

Research output: Chapter in Book/Report/Conference proceedingConference contribution

29 Citations (Scopus)

Abstract

It is essential to derive and quantitatively evaluate the parameters of capacity fade in order to understand degradation mechanisms of lithium-ion batteries. Capacity is directly connected with the discharge curve, and it can be reproduced from cathode and anode specific discharge curves. The states of lithium-ion cell cathodes and anodes were accurately estimated using nondestructive state analysis. The cell discharge curve was well reproduced for both the initial and deteriorated states from the specific cathode and anode discharge curves, the amounts of accessible active materials in each electrode, and the alignment between cathode and anode discharge curves. This method was used in a calendar-life test to separately evaluate the decrease in the amounts of active materials in each electrode and the increase in irreversible lithium loss.

Original languageEnglish
Title of host publicationECS Transactions - Batteries (General) - 213th ECS Meeting
Pages61-73
Number of pages13
Edition19
DOIs
Publication statusPublished - 1 Dec 2008
EventBatteries General Session - 213th Meeting of the Electrochemical Society - Phoenix, AZ, United States
Duration: 18 May 200823 May 2009

Publication series

NameECS Transactions
Number19
Volume13
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceBatteries General Session - 213th Meeting of the Electrochemical Society
CountryUnited States
CityPhoenix, AZ
Period18/05/0823/05/09

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Honkura, K., Honbo, H., Koishikawa, Y., & Horiba, T. (2008). State analysis of lithium-ion batteries using discharge curves. In ECS Transactions - Batteries (General) - 213th ECS Meeting (19 ed., pp. 61-73). (ECS Transactions; Vol. 13, No. 19). https://doi.org/10.1149/1.3018750