ABSTRACT
Lithium-ion batteries (LIBs) are the most popular among electrochemical energy storage devices and have a monopoly on powering the electronic gadgets and zero-emission automobile market due to their relatively high energy density, higher output voltage, negligible self-discharge, and lack of a memory effect [1–4]. A conventional lithium-ion battery comprises two electrodes, an anode and a cathode, and an 2electrolyte system, as shown in Figure 1.1. The electrolyte is one of the key components and is known as the heart of the battery, acting as the ion transport pathway between the positive and negative electrode. The cell capacity, working temperature range, safety, electrochemical performance, and cyclability of lithium-ion batteries are enhanced by adopting the electrolyte system. According to their physical state, electrolytes can be broadly classified into liquid electrolytes, quasi-solid electrolytes, gel electrolytes, and solid electrolytes (SEs).
