We want to develop a battery that has a graceful failure - meaning that if it's damaged, it won't cause other problems. We have to understand how batteries fail and why they fail.

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Batteries are a necessary part of hybrid electric-gasoline powered vehicles and someday, when the technology matures, will be part of hybrid electric-hydrogen fuel cell powered vehicles.

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We have two approaches in our research - the empirical model and the mechanistic model. The empirical model generates life prediction from accelerated degradation test data, while the mechanistic model relates life prediction to changes in battery materials. Our approach provides an independent measure of battery life so we don't have to rely on what battery manufacturers tell us.

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