Highly conductive VO2 treated with hydrogen for supercapacitors

Abstract

Reduction of VO₂ resistance by nearly 3 orders of magnitude through H₂ treatment was reported for supercapacitor application. A specific discharge capacitance of 300 F g⁻¹ and a specific energy density of 17 W h kg⁻¹ at a rate of 1 A g⁻¹ are demonstrated with long-term cycling stability, which is 4 times higher than untreated samples.