(Digital Presentation) Fabrication of NiO-TiO2 Modified Ni Foam and Its Application As Energy Storage Materials

Abstract

Rechargeable batteries are the most effective and efficient devices that store electricity from various intermediate and renewable sources such as solar and wind power. However, the fast-growing market of portable devices requires the use of hybrid materials which ensures safety, high energy density and higher saving for customers [1-3]. In this work, an energy storage device has been fabricated based on novel NiO-TiO2 film modified 3D Nickel Foam (NF) electrode. Simple sol-gel method was used to fabricate the electrode, where NiCl26H2O and TiO2 were used as precursors. 550 °C was used to calcine the NiO-TiO2 modified NF before it can be used as electrode material. During the fabrication process, Ni-Ti ratio has been varied to 1:1 and 1:2 and a comparative study has been developed on the basis of energy storing capacities. In this work, NiO-TiO2 modified Nickel Foam (NiO-TiO2/NF) was used as working electrode, pencil graphite electrode was also used as counter electrode and Ag/AgCl as reference electrode. To calculate the energy storage capabilities, NiO-TiO2/NF was dipped into NaOH and LiCl electrolytes. NiO-TiO2-NF (1:2) shows higher specific capacity in compare to NiO/NF, TiO2/NF and NiO-TiO2-NF (1:1) electrodes. In addition, with the scan rate increases, energy storing capacity of NiO-TiO2-NF found to be decreased. Thereby, a hybrid NiO-TiO2/NF can be used as future electrode material in the energy storage devices.AcknowledgementsUniversity of Grants Commission of Bangladesh (2021-22) for funding this research.Reference N. Padmanathan, et al., J. Mater. Chem. A, 2016, 4, 4820-4830.J. Islam et al., PLoS ONE, 2021 16(3), e0248142.M. Jamal et al., Sci. Rep., 2019, 9, 4659.