Development of Dielectric Films for Wound Capacitors Navy SBIR FY2008.1 Sol No.: Navy SBIR FY2008.1 Topic No.: N08-076 Topic Title: Development of Dielectric Films for Wound Capacitors Proposal No.: N081-076-1254 Firm: Strategic Polymer Sciences, Inc. 200 Innovation Blvd. Suite 237 State College, Pennsylvania 16803-6602 Contact: Shihai Zhang Phone: (814) 238-7400 Web Site: www.strategicpolymers.com Abstract: We propose to develop advanced capacitor films with low-cost by modifying the current commercial capacitor films. The dielectric constant, energy density, and temperature stability of commercial capacitor films can be significantly improved by depositing a high-dielectric constant organic or inorganic dielectric coating using plasma enhanced chemical vapor deposition (PECVD) process. With proper composition design and careful tuning of the interface, the dielectric blocking layer can also minimize charge injection and leakage current so the capacitor charge-discharge efficiency can be improved too. The innovative capacitor film will have energy density higher than 10 J/cc, dielectric loss less than 1%, delivery rates faster than milliseconds, improved thermal performance above 120 ,aC, and graceful failure feature. Furthermore, since no expensive capacitor film processing facility (> $25M USD) required, the high energy density capacitor film can be scaled up and produced with the well-developed roll-to-roll PECVD technology with low capital investment (< $2MUSD). Benefits: There are numerous applications that will benefit from improved energy storage capacitors with low loss and high thermal stability. The Navy is developing the all-electric ship in which the power requirements of future Naval vessels will not be as dominated by propulsion as current ships and it may be desirable to be able to transfer energy between uses. This will require storage and conditioning of vast amounts of power. In addition, weapons, catapult systems and other military technologies that demand pulses of power would require very large banks of dielectric capacitors. In parallel, the Air Force is developing more-electric-aircrafts and the Army is trying to develop all electric tanks. Compact, high-energy-density, pulse-power capacitors will be the enabling technology for all future weapon systems that the DoD plans to pursue. These capacitors can be used in pulse-forming networks (PFNs) for the conversion of prime electrical energy into the necessary short pulses of energy needed to energize loads such as directed energy, kinetic energy weapons, and high power microwave. In addition, these advanced capacitor film can also be used for implantable cardiac defibrillators, external defibrillators, and capacitor bank for hybrid electric vehicles. Return