The status of Sony Li-ion polymer battery

Sony developed a new thin and lightweight battery by replacing the conventi onal electrolyte with a new gel polymer electrolyte. Because gel polymer el ectrolyte has a superior advantage of anti-leakage characteristics, the bat teries need to be enclosed with hybrid laminated films. This helps modify t he battery shape fixation due to conventional metal enclosure and create a variety of battery sizes. Consequently Sony was able to achieve a 3.8 mm - an ideal shape for portable use. Hybrid laminated film enclosure is lighter than metal enclosure of conventional battery, and allows additional weight -energy density when compared to conventional batteries of equal capacity. (C) 2001 Elsevier Science B.V. All rights reserved.