Investigation on poly 3 4 Ethylenedioxythiophene poly styrenesulfonate nanocomposites of Ni rich and Li rich cathodes for lithium ion battery application

Abstract

Lithium-ion batteries (LIBs) are widely used in portable electronic devices and electric newlinevehicles for transportation and grid energy storage systems. In this, the layered oxide cathode newlinematerial of LIBs has greater attention for its higher energy density, cycle stability, and safety newlineperformance of energy storage devices. Currently, the Ni-rich and Li-rich layered oxide newlinecathode materials in LIB have been showing great interest in various applications because of newlinetheir high energy density and safety performance. However, the objective of the thesis is to newlineunderstand the mechanism of Ni-rich and Li-rich layered oxide cathode materials and also to newlineinvestigate the origin of voltage decay and capacity degradation in the family of oxide newlinematerials. The thesis also presents our efforts to synthesize the single-crystal cathode through newlinethe surface modification of the conducting polymer to improve the electrochemical newlineperformance. newlineChapter 1 deals with the general introduction of lithium-ion batteries. This chapter also newlinediscusses the synthesis process of single-crystal Ni-rich and Li-rich layered oxide materials by newlinesolution combustion method. The surface modification of Poly(3,4-ethylenedioxythiophene) newline(PEDOT): Polystyrene sulfonate (PSS) composite of single crystal cathode materials synthesis newlineby wet coating method newline