MoO2 Nanowire Electrochemically Decorated Graphene Additively Manufactured Supercapacitor Platforms

Additively manufactured (AM) supercapacitor platforms are fabricated from bespoke filaments, which are comprised of electro-conductive graphene (20 wt%) incorporated polylactic acid (80 wt%), via fused deposition modeling and denoted as G/AMEs. The G/AMEs are shown to be capable of acting as a template for the electrodeposition of metals/metal oxides, in particular MoO2 nanowires (MoO2-G/AMEs), which are subsequently explored as a capacitor within 1 m H2SO4, 1-butyl-3-methylimidazolium hexafluorophosphate, and 1-butyl-3-methylimidazolium tetrafluoroborate. Optimization of the MoO2-G/AMEs demonstrates capacitance up to 1212 F g(-1) when used in a symmetric arrangement. The material science described herein represents a significant enhancement in unlocking AMs potential as a valid manufacturing route for device level capacitance architectures.

Automated summary

The research demonstrates the potential of additively manufactured supercapacitor platforms using graphene and polylactic acid filaments, with the ability to electrodeposite metals/metal oxides like MoO2 for high capacitance performance in various electrolytes. This represents a significant advancement in unlocking AM's potential for device level capacitance architectures.