Preparation of new graphite based composite electrodes with some metal oxide nanoparticles and their applications in energy

Abstract

Electrochemical science and technology can play a vital role for the indirect storing of extra renewable energy through converting the electricity into chemical energy. This may participate in solving the global problem of consuming the irrecoverable fossil fuels.For instance, water splitting into hydrogen and oxygen by electrolysis is considered as a hopeful substitute to electricity storage systems using batteries. Recently, many intensive studies focused on constructing high efficient and low cost electrocatalysts mostly for water splitting reactions: oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). This work involves the following: 1. Many cobalt/graphite electrodes were successfully prepared via chronoamperometry deposition of cobalt from bath containing Co+2 ions in the absence and presence of equimolar concentration of citrate ions on graphite substrate. As graphite is considered as a typical electrocatalyst support in various energy conversion and storage devices such as fuel cells, supercapacitors, lithium ion batteries and water splitting reactions (OER and HER).