Author:Makgopa, K; Ejikeme, PM; Jafta, CJ; Raju, Kumar; Zeiger, M; Presser, V; Ozoemena, KIDate:Jan 2015We present a study on the pseudocapacitive properties of birnessite-type MnO(sub2) grafted on highly graphitized onion-like carbon (OLC/MnO(sub2)). In a three-electrode setup, we evaluated two different substrates, namely a platinum disc and ...Read more
Author:Chidembo, AT; Aboutalebi, SH; Konstantinov, K; Jafta, CJ; Liu, H; Ozoemena, KIDate:Jan 2014We report the use of spray pyrolysis method to synthesize high surface area (BET surface area of 139 m2g-1) self–organized, micron sized urchin-like composites made up of reduced graphene oxide and needle-shaped manganese oxide (rGO-Mn2O3/Mn3O4). ...Read more
