Controlled Growth of Thin Film Battery Electrodes by Pulsed Laser Deposition

Physical Sciences Inc and Tufts University Electro-Optic Technology Center propose to fabricate a robust lithium ion high energy density rechargeable battery using inorganic thin film technology. The proposed thin film electrode growth methods will provide well controlled film microstructures and consistent electrical performance through many recharging cycles. During the proposed Phase I program we will demonstrate a prototype readily manufactured high energy density. High power density rechargeable thin film battery. Thin film growth process control techniques will also be identified and assessed. The major features of the proposed batter are: 1. Greater than 4 volt single cells 2. High charge capacity of almost one mole of electrons per cathode mole transferred during charging/discharging 3. Current density of >10 mA/cm2 4. Electrochemically stable structure with an anode that can be used safely in air 5. Inorganic electrolyte which can be physically deformed without cell electrical failure 6. Composed of readily available and recyclable materials 7. Could be manufactured with a large area controlled pulsed laser deposition process and other physical vapor deposition processes.