Development of new type of Lithium-Ion Secondary battery by SONY
Sony today made an announcement on development of new type of lithium-ion secondary battery which utilizes the Olivine-type Lithium Iron Phosphate as its cathode material. This development could very well give a real competition to Sanyo’s eneloop batteries. The newly developed battery comes with power density of 1800W/kg (20A continuous discharge) and it is capable of recharging for up to 99% in just 30 minutes. Furthermore the new battery is capable of retaining 80% of its capacity after 2,000 charge-discharge cycles. The high power density was achieved through Sony’s proprietary particle design and cell structure design technology enabling the new battery to discharge large amount of currents while providing a stable voltage output making it ideal for motor driven application such as power tools. The new battery extends the life span of existing lithium ion batteries by 4 times due to use of olivine-type lithium iron phosphate’s robust structure and company’s proprietary particle design technology. The application of this type of battery can be expanded to mobile electronic devices. The new battery comes in diameter of 18mm, and height of 65mm weighing only 40 gram. It also features energy density of 95Wh/kg with maximum continuous discharge current of 20A. The shipment of this new battery began on June 2009.