Session: Innovative Chemistry and Materials for Electrochemical Energy Storage:

Abstract: The sustainable energy and clean environment are two major concerns at the present time. An innovative strategy is needed to regulate the carbon emissions, to reduce the cost of generating energy from renewable sources and develop greener, cheaper and scalable technologies for energy production and storage. Organic-inorganic hybrid materials with nanoscale morphologies gain significant attention as a potential candidate for energy storage applications. Herein, we have synthesized several peptide based metal hydroxide nanohybrids via electrodeposition (galvanostatic and potentiostatic) method on different substrates like carbon paper, nickel foam and carbon cloth. The in situ electrochemically deposited organic-inorganic nanohybrids have been investigated by different analytical techniques such as mass, NMR, FTIR, Raman, XRD, EDS and elemental mapping. The nanostructured morphology of the nanohybrid materials have been investigated by FE-SEM and TEM. The XPS analysis has been performed to investigate the chemical composition and electronic state of the hybrid materials. The electrochemical performances have been examined in aqueous 1M KOH and LiOH electrolytes. Additionally, we have assembled symmetric supercapacitor device to blink LED bulb. The device shows maximum energy density of 16.35 Wh kg^-1 at 0.5 A g^-1 and highest power density of 617.37 W kg^-1 at 2 A g^-1 with excellent capacitance retention of 81% at 2 A g^-1 after 5000 cycles. These encouraging results suggest that these nanohybrid materials can create facile ways in energy storage and conversion applications.

Apurba Das

Appearances