The AC Impedance Characteristic of High Power Li4Ti5O12-based Battery Cells

Ana-Irina Stroe, Daniel Loan Stroe, Maciej Jozef Swierczynski, Tiberiu Stanciu, Remus Teodorescu, Søren Knudsen Kær

Research output: Contribution to journalConference article in JournalResearchpeer-review

2 Citations (Scopus)

Abstract

This paper studies the impedance characteristics of a fresh 13 Ah high-power lithium titanate oxide (LTO) battery cell and analyses its dependence on the temperature and state-of-charge. The impedance of the battery cell was measured by means of the electrochemical impedance spectroscopy (EIS) technique for the entire state-of-charge (SOC) interval and considering five temperatures between 5oC and 45oC. By analyzing the measured impedance spectra of the LTO-based battery cell, it was found out that the cell’s impedance is extremely dependent on the operating conditions. By further processing the measurements data by means of curve fitting, it was found that the parameters of the equivalent electrical circuit (and the corresponding electro-chemical processes) are following different dependencies on the SOC, which in most of the cases are only slightly changing with the measurement temperature.
Original languageEnglish
JournalECS Transactions
Volume70
Issue number1
Pages (from-to)291-300
Number of pages10
ISSN1938-6737
DOIs
Publication statusPublished - 2015
EventInternational Conference Advanced Batteries, Accumulators and Fuel Cells - Brno, Czech Republic
Duration: 30 Aug 20153 Sep 2015
Conference number: 16

Conference

ConferenceInternational Conference Advanced Batteries, Accumulators and Fuel Cells
Number16
Country/TerritoryCzech Republic
CityBrno
Period30/08/201503/09/2015

Fingerprint

Dive into the research topics of 'The AC Impedance Characteristic of High Power Li4Ti5O12-based Battery Cells'. Together they form a unique fingerprint.

Cite this