1. Introduction Among numerous forms of energy storage devices, lithium-ion batteries (LIBs) have been widely accepted due to their high energy density, high power density, low self-discharge, long life and not having memory effect , .
LiVO 2, LiMnO 2 and LiFeO 2 suffer from structural instabilities (including mixing between M and Li sites) due to a low energy difference between octahedral and tetrahedral environments for the metal ion M. For this reason, they are not used in lithium-ion batteries.
For Li-ion batteries lithium ionic conductivity should be between 10 −3 and 10 −4 S cm −1. 320 Polymeric materials like poly (aza alkanes), poly (oxa alkanes), poly (thia alkanes), and poly (ethylene oxide) have been extensively studied for use in Li-ion battery applications. However, low ionic conductivities have limited their application to date.
In 2016, 89% of lithium-ion batteries contained graphite (43% artificial and 46% natural), 7% contained amorphous carbon (either soft carbon or hard carbon), 2% contained lithium titanate (LTO) and 2% contained silicon or tin-based materials.
Increasing demand for portable electronic devices, electric vehicles, and grid scale energy storage has spurred interest in developing high-capacity rechargeable lithium-ion batteries (LIBs). Silicon is an abundantly available anode material that has a theoretical gravimetric capacity of 3579 mAh/g and a low operating potential of 0–1 V vs Li/Li +.
In their initial stages, LIBs provided a substantial volumetric energy density of 200 Wh L −1, which was almost twice as high as the other concurrent systems of energy storage like Nickel-Metal Hydride (Ni-MH) and Nickel-Cadmium (Ni-Cd) batteries .