David Howell

TL;DR: In this article, the authors present analysis, discussions, and resulting requirements for plug-in hybrid electric vehicle batteries adopted by the US Advanced Battery Consortium (USAC) for electric vehicles.

TL;DR: Key gaps in existing elements of the technology are presented as well as developmental needs, and new positive-electrode materials which are less prone to stress-induced failure are presented.

TL;DR: In this paper, the authors examined discharge/charge hysteresis (path dependency) effects on measuring resistance using two different lithium-ion cell chemistries and found that charging to a target condition yields different and less consistent resistance measurements compared to discharging to that same condition.

TL;DR: The Advanced Technology Development Program (ATDP) has completed performance testing of the second generation of lithium-ion cells (i.e., Gen 2 cells) and reported detailed capacity-, power-, and impedance-based performance results as discussed by the authors.

TL;DR: In this article, the impact of reference performance tests (RPTs) on battery life was investigated using commercially available lithium-ion cells and the results indicated that RPTs actually contributed to cell degradation and failure.