The influence of electrolyte on the electrochemical properties of reduced graphene oxide/nickel - based ternary nanocomposite / Daniel Fazlan Atan

In this work, the effect of electrolyte on the electrochemical performance of
reduced Graphene oxide/Nickel (rGO/Ni) was studied. Its electrochemical
performance in three different electrolytes, H2S04, KOH and NaOH was
investigated. The dopant concentration used in this study are 10%, 20% and
30% of Nickel loading. The composite exhibits different capacitive
behaviour in different aqueous electrolytes, demonstrating the highest
specific capacitance (1751.93 Fg-1) at 30 % of Nickel loading in the H2S04
electrolyte due to it having highest molar ionic conductivity compared to the
other electrolytes used. The scan rate somehow affected the specific
capacitance values, where at lower scan rate shows higher value of specific
capacitance due to the faradaic reaction occur between the electrolyte and
electrode is longer at higher scan rate.