Journal
JOULE
Volume 2, Issue 1, Pages 155-167Publisher
CELL PRESS
DOI: 10.1016/j.joule.2017.11.003
Keywords
-
Funding
- RANGE program of Advanced Research Projects Agency-Energy (ARPA-E)
- US Department of Energy (DOE) [DE-AR0000869-1707]
- DOE [DE-AC05-00OR22725]
- Julian Sculley at ARPA-E
- UT-Battelle LLC [DE-AC05-00OR22725]
- US Department of Energy
Ask authors/readers for more resources
We report on a unique safety mechanism introduced to the Li-ion battery design to mitigate the effects of a mechanical impact event by limiting the current moving through resulting internal shorts, thereby preventing thermal runaway. Slitted'' electrodes and current collectors would electrically isolate the impacted parts of the electrodes before puncturing the separator. Batteries with such slitted'' electrodes were shown to perform normally prior to the mechanical impact. A proof-of-concept experiment showed that the battery with modified electrodes survived significant mechanical deformation without any change in the open-circuit voltage of the battery. It is interesting to note that, after the impact event, the modified battery was still viable with a reversible capacity of about 93% of that before the indentation test, while the standard battery was no longer functional.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available