[pdove]

https://www.gs-yuasa.com/en/technic/vol5/pdf/05_1_021.pdf

We have developed a new large-sized lithium-ion cell and its battery module for electric vehicle (EV) applications. They are based on the advanced technologies inheriting basic features from "LIM series" of large-sized lithium-ion batteries already manufactured so far ; therefore, the construction and electrode materials are similar to those of the latter series ones. These new cell and battery module have nominal capacity of 50 Ah and the specific energy is 109 Wh kg-1 and 99 Wh kg-1 for cell and battery module, respectively. This cell is capable to accept quick charge up to about 80% of state of charge (SOC) within 30 minutes at 25 ℃．The specific power of the cell is higher than or equal to 550 W kg-1 at 50% SOC at 25 ℃．Furthermore, regarding the calendar life, capacity retention of 65% is anticipated after 10 years storage at 25 ℃ from our life prediction formula. The cycle life test at 25 ℃ after 1000 cycles showed capacity retention of 85%. These battery modules will be mass-produced in 2009 by newly established joint venture "Lithium Energy Japan" through the stage of in-vehicle verification field tests in 2008.