Structure-Mediated Fluid-Involved Behaviors Promote Performances of Carbon-based supercapacitor

Abstract

Carbon nanotube sponges (CNTS), as promising electrode materials, were limited by inherent hydrophobicity. Herein, various TiO₂ nanostructures were synthesized inside CNTSs, providing pseudocapacitance, regulating the wettability and ion migration of the electrolyte, thereby enhancing the area-specific capacitance by up to 250%. These results offer insights for advanced energy storage systems.