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.
Originalsprog | Engelsk |
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Titel | Proceedings of the 2018 IEEE Energy Conversion Congress and Exposition (ECCE) |
Antal sider | 7 |
Forlag | IEEE Press |
Publikationsdato | sep. 2018 |
Sider | 3857-3863 |
ISBN (Elektronisk) | 978-1-4799-7312-5 |
DOI | |
Status | Udgivet - sep. 2018 |
Begivenhed | IEEE Energy Conversion Congress & Exposition ECCE 2018 - Portland, USA Varighed: 23 sep. 2018 → 27 sep. 2018 http://www.ieee-ecce.org/2018/ |
Konference
Konference | IEEE Energy Conversion Congress & Exposition ECCE 2018 |
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Land/Område | USA |
By | Portland |
Periode | 23/09/2018 → 27/09/2018 |
Internetadresse |
Navn | IEEE Energy Conversion Congress and Exposition |
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ISSN | 2329-3721 |