High Energy / Power Density Rechargeable Lithium Batteries Based on Advanced Materials

LithChem Energy (LCE) will develop a new advanced high power/high energy density rechargeable lithium-ion cell/battery which has the potential of having a significantly higher energy density (> 240 Wh/kg) and a higher power density (high discharge rate estimated to be up to 10 C) than current lithium-ion batteries. This new rechargeable lithium-ion battery will be based on an advanced lithium manganese oxide cathode material with increased Li/Mn ratios of 1 and higher. The modification of this material will stabilize its long term cycle life. The anode material will be a minimum or non expanding lithium metal alloy foil/powder combined with carbon anode material. This advanced lithium-ion battery combination will is expected to also demonstrate excellent cycle life. The gain in energy density results from this novel high capacity cathode material (estimated to be >230 Ah/g) and the greater capacity of the anode containing a form of lithium metal which not only eliminates the losses due to the anode electrode interaction (SEI) but adds additional interculation capacity for long term cycling. This significantly high energy density battery will also have direct application in the plug-in hybrid electric vehicle (PHEV) and the all electric vehicle (EV).