3D TiO2@Ni(OH)2 Core-shell Arrays with Tunable Nanostructure for Hybrid Supercapacitor Application

摘要: Three dimensional hierarchical nanostructures have attracted great attention for electrochemical energy storage applications. In this work, self-supported TiO2@Ni(OH)2 core-shell nanowire arrays are prepared on carbon fiber paper via the combination of hydrothermal synthesis and chemical bath deposition. hybrid, morphology wall size interconnected nanoflake shell Ni(OH)2 can be tuned through adjusting concentration ammonia solution. Heterogeneous nucleation subsequent oriented crystal growth identified to mechanism affecting nanostructure material, which consequently determines performance in both charge transfer. Superior capabilities 264 mAhg−1 at 1 A g−1 178 mAh 10 A achieved with hybrids optimized structure. The asymmetric supercapacitor prototype, comprising as anode mesoporous carbons (MCs) cathode, is shown exhibit superior high power densities. present work provides a clear illustration structure-property relationship nanocrystal offers potential strategy enhance battery type electrode hybrid device.