In the 1890s Charles Pollak found that an oxide layer on an aluminum anode was stable in a neutral or alkaline solution and was granted a patent in 1897 for a borax electrolyte aluminum capacitor.

Transition metal sulfide (TMS) materials are popular among choices for anodes in developing flexible lithium-ion capacitors (FLICs), but do not live up to their theoretical capabilities when put ...

It’s this oxide layer that actually acts as the dielectric in electrolytic capacitors, not the paper separator between the anode and cathode strips. Winding the foils together with the paper ...

Tantalum capacitors are constructed using tantalum for at least the anode material.Capacitors in general consist of two polarized conductors separated by an insulating dielectric material. When the ...