Three-dimensionally ordered porous TiNb₂O₇ nanotubes: a superior anode material for next generation hybrid supercapacitors

Abstract

A novel hybrid supercapacitor is successfully constructed based on the 3D ordered porous TiNb₂O₇ electrode (anode) and graphene grass electrode (cathode). In combination with the advantages from the lithium ion batteries and supercapacitors, this device shows superior energy density and power density with improved cycling performances.