Development of Gel Polymer Electrolytes and Surface Modified Cathode Materials for Application in Rechargeable Lithium Batteries

Abstract

Nowadays, rapidly growing population and industries dependency on energy are key factors newlinefor increased energy consumption. Conventional fossil fuels and non-conventional energy newlineresources are being used to fulfill our energy demand. but, the non-conventional energy newlineresources such as solar, wind, geothermal etc. are intermittent and require efficient energy newlinestorage systems (rechargeable Li/Na-ion batteries, supercapacitors etc.) for continuous newlinesupply of energy. In recent years, rechargeable Li-batteries as energy storage device have newlineemerged as reliable energy and conversion systems in portable electronic devices and electric newlinevehicles (EVs). However, improvement in the performance of rechargeable Li-batteries newline(such as high energy/ density, high-rate capability. long cycling-life and safety) is required. newlinePresent thesis work mainly concerns about the development of thermally/mechanically newlinestable and high Li-ion conductivity polymer electrolytes as well as surface modified cathode newlinematerials. Safety is one of the key concerns for rechargeable Li-batteries with commercial newlineliquid electrolytes. The liquid electrolytes have some drawbacks such as high newlinevolatility/flammability, leakage problem, highly reactive with electrode materials newline