The USABC contract calls for A123 to focus on improving the energy density of cells for plug-in applications. The A123 battery chemistry is of interest to automakers because of its inherent stability compared to the lithium metal oxide chemistry used for consumer electronics batteries. However, the more stable chemistry from A123 has lower energy density. The goal is to improve that characteristic for so-called charge depleting applications that are designed to run longer on electricity alone. The three-year program will also try to reduce cost, improve durability and make the cells more resistant to abuse.
[Source: US Advanced Battery Consortium]