  Advanced material composite of nanocarbons and metal-based materials provides
a synergistic effect to obtain excellent electrochemical charge-storage
performance and other properties. Herein, 3D porous carbon-metal oxynitride
nanocomposites with tunable carbon/metal and oxygen/nitrogen ratio are
synthesized uniquely by simultaneous ablation from two different targets by
single-step pulsed laser deposition at room temperature. Co ablation of
titanium and vanadium nitride targets together with graphite allowed us to
synthesize carbon-metal oxynitride porous nanocomposite and exploit them as a
binder-free thin film supercapacitor electrode in aqueous electrolyte. We show
that the elemental composition ratio and hence the structural properties can be
tuned by selecting target configuration and by manipulating the ablation
position. We investigate how this tuning capability impacts their
charge-storage performances. We anticipate the utilization of as-synthesized
various composites in a single PLD production run as next-generation active
materials for flexible energy storage and optoelectronic applications.
