Research Progress on Porous Carbon Supported Metal/Metal\nOxide Nanomaterials for Supercapacitor Electrode Applications

Abstract

Recently, transition metal/metal\noxides (TMMOs) decorated on porous\ncarbons (PCs) have been intensively focused on designing rational\nelectrode materials for the promising future specific category of\nelectrochemical energy storage and conversion technologies. In particular,\nTMMO incorporation with PC structures has become very attractive in\nthe area of supercapacitors (SCs) mainly caused by their large accessible\nsurface areas (SSA), together with the suitable pore size distributions\n(PSD), high electrical conductivity, and rapid redox reactions reversibly\non the surface. The transportation of ions, as well as electrons in\nthe bulk of electrodes, is fast as a result of optimal contact between\nelectrodes and electrolytes at the electrode–electrolyte interface,\nthereby generating high specific capacities (<i>C</i>_sp) of these PCs with TMMOs. We report a survey regarding recent\nadvances in the fabrication and synthesis of TMMOs decorated on PCs\nwith some physical characteristics and their applications for electrochemical\ncapacitors. Some future trends and prospects for further development\nof the subject nanocomposites in application to next-generation supercapacitors\nare discussed.