POS6-0113
Self-Healable Solid-State Bio-polymer Electrolytes for Next-Generation Lithium-Ion Batteries
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Kaushiki ahuja (Research scholar , UPES, dehradun, India)
Co-Author(s)
Abstract
For lithium-ion batteries to be long-lasting, safe, and sustainable, self-healing polymeric electrolytes are essential. To overcome three long-standing constraints: inherent mechanical fragility, restricted ionic mobility, and a limited electrochemical window. We present developments in the design of bio-molecule-derived, self-healing solid polymer electrolytes. We describe a range of self-healing polymer electrolytes using the polymeric composition of polyethene glycol (PEG) and bio-based methyl cellulose (MC), comprising a dynamic disulfide moiety (a covalent adaptive network) and imidazolium-based ionic liquids (EMIM-TFSI, EMIM-Br, and EMIM-Ac). Physicochemical and electrochemical characterisation, including FTIR, XRD, DSC, TGA, stress-strain analysis, SEM, ionic conductivity, dielectric study, electrochemical stability window (ESW), and lithium transference number, was used to investigate and demonstrate synergistic improvements in sustainability, flexibility, ion mobility, and potential window by adding various ionic liquids. The prepared electrolytes possess good ionic conductivity (10-3 S/cm) at ambient temperature, good permittivity value with respect to frequency, a wide electrochemical stability window (>5.5 V), and exceptional scratch-healing efficiency (due to reversible disulfide exchange networks). The integrated self-healing mechanism and superior electrochemical properties validate the potential of the developed self-healable polymer electrolytes as robust candidates for durable solid-state lithium-ion batteries.
