Ambient hydrolysis deposition of TiO2 in nanoporous carbon and the converted TiN–carbon capacitive electrode

Abstract

Despite the considerable advances of deposition technologies, formation of conformal deposition on the surface of nanoporous carbons remains a significant challenge. Here, we introduce a new ambient hydrolysis deposition method that employs and controls pre-adsorbed water vapor on nanoporous carbons to define the deposition of TiO₂. We converted the deposited TiO₂ into TiN via a nitridation process. The metallic-TiN-coated porous carbon exhibits superior kinetic performance as an electrode in electrical double layer capacitors. The novel deposition method provides a general solution for surface engineering on nanostructured carbons, which may result in a strong impact on the fields of energy storage and other disciplines.