TY  - JOUR
AU  - Dagger, Tim
AU  - Meier, Vladislav
AU  - Hildebrand, Stephan
AU  - Brüggemann, Daniel
AU  - Winter, Martin
AU  - Schappacher, Falko M.
TI  - Safety Performance of 5 Ah Lithium Ion Battery Cells Containing the Flame Retardant Electrolyte Additive (Phenoxy) Pentafluorocyclotriphosphazene
JO  - Journal of applied pharmacy
VL  - 6
IS  - 10
SN  - 2194-4288
CY  - [S.l.]
M1  - FZJ-2018-06757
SP  - 2001 - 2010
PY  - 2018
AB  - Investigations on the effect of flame retardant additives (FRs) on the abuse tolerance of large scale lithium ion battery (LIB) cells (5 Ah) are of high relevance in battery science and industry but rarely performed as they are cost and time consuming. In addition, even though FRs are frequently investigated, their positive effect on the safety properties of larger full LIB cells under abusive condition has not been proven yet. The promising FR (phenoxy) pentafluorocyclotriphosphazene (FPPN) is known to exhibit excellent flame retardant‐ and electrochemical properties at the same time. Therefore, FPPN is investigated towards abuse tolerance in 5 Ah LIB cells in this study. Calorimetric investigations show that a mass percentage of 5 wt % FPPN mixed to a standard electrolyte, significantly reduces the self‐heating rate of 5 Ah cells in the temperature range from 80 °C to 110 °C. While nail penetration and external short circuit experiments provide no significant difference between standard and FPPN‐containing cells, an increased overcharge tolerance and a favorable thermal stability at ≈120 °C in overcharge and oven experiments could be shown.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000449676400019
DO  - DOI:10.1002/ente.201800131
UR  - https://juser.fz-juelich.de/record/857790
ER  -