Improved Capacitor Using Amorphous RuO2

Amorphous hydrous ruthenium oxide(Ru02.xH20A) has a specific capacitance at least two times larger than any other known capacitor materials. An object of this proposal is to demostrate the feasibility of producing shock-hardened RuO2. H2O based electrochemical capacitors suitable for use in power sources for advanced weapon system applications. A 25 V, 150 mF shock-hardened electrochemical capacitor having an ESR less than 0.2 will be constructed and delivered. Another object is to determine if an amorphous Ru02 film cathode could be used in an improved version of a hybrid electrochemical-electrolytic capacitor. Amorphous Ru02 films will be used in order to increased the capacitance of the cathode electrode. A 25 V, 30 mF tantalum anode hermetic hybrid capacitor having an ESR of less than 0.050 and a 6V, 10 mf aluminum anode hybrid capacitor will be fabricated and delivered for further evaluation and testing. The project will measure capacitor performance imcluding capacitance, ESR, and maximum current density under different temperatures, and cycle life.