Performance of a hydrogen uranyl phosphate—carbon double-layer solid capacitor

Pham-Thi, M.; Adet, Ph.; Velasco, G.; Colomban, Ph.
May 1986
Applied Physics Letters;5/19/1986, Vol. 48 Issue 20, p1348
Academic Journal
A mixture of commercially available carbon black powders and hydrogen uranyl phosphate (HUP) precipitate can be used as the electrode material for miniaturized double-layer capacitors. A solid cell of C-HUP|HUP|C-HUP has a capacitance of 1 F which, given the device area and thickness of 0.8 cm2 and 0.2 cm respectively, corresponds to an energy density of more than 5 J/cm3. The charge×voltage factor is higher than 5×10-6 s and the working voltage is over 1.6 V. The leakage current is lower than 3 μA at room temperature. The electrolyte can be operated up to about 120 °C if the device is hermetically sealed.


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