Oxide films on titanium can have a variety of compositions and structures that result in unique properties, e.g., self-passivation for chemical resistance, semi-conducting properties for photocatalysis or dielectric properties for capacitive energy storage and applications in  power electronics, power communications and power devices in ‘more electronic aircraft’

In ARPA-E-funded research we focus on tailoring composition, microstructure and surface condition of titanium and Ti-alloys for the formation of electrolytic capacitors.  I will present an overview of the requisite titanium metallurgy, the formation of TiO₂ or titanate-based dielectrics, and the potentially very high energy density and power of such titanium capacitors.