Accelerated Lifetime Testing of High Power Lithium Titanate Oxide Batteries

Ana-Irina Stroe, Daniel-Ioan Stroe, Vaclav Knap, Swierczynski Maciej, Remus Teodorescu

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

4 Citations (Scopus)
342 Downloads (Pure)

Abstract

This paper presents results obtained from extensive accelerated lifetime tests performed on a high power Lithium Titanate Oxide (LTO) battery cell. The tests were performed at elevated temperatures, with different C-rates, and for different cycle depths. The obtained results have shown a very good capacity retention and a reduced internal resistance increase (and subsequently reduced power capability decrease) even after more than 8000 cycles performed at 42.5°C. We found out that both the capacity and the internal resistance have been degrading faster when the LTO-based battery cells were cycled with a smaller C-rate (i.e., 1C) than with a higher C-rate (i.e., 3C). Moreover, based on the harvested aging results, we discovered that the capacity and not the internal resistance is the performance parameter of the tested LTO-based battery cells, which will limit their lifetime.
Original languageEnglish
Title of host publicationProceedings of the 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages7
PublisherIEEE Press
Publication dateSep 2018
Pages3857-3863
ISBN (Electronic)978-1-4799-7312-5
DOIs
Publication statusPublished - Sep 2018
EventIEEE Energy Conversion Congress & Exposition ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018
http://www.ieee-ecce.org/2018/

Conference

ConferenceIEEE Energy Conversion Congress & Exposition ECCE 2018
CountryUnited States
CityPortland
Period23/09/201827/09/2018
Internet address
SeriesIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

Keywords

  • Lithium-Ion Battery
  • Lithium Titanate Oxide
  • Accelerated Aging
  • Capacity Fade
  • Resistance Increase

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