Robust Method of Lithium Ion Coin Half-Cell Fabrication

Lithium Ion batteries have found their applications in consumer electronics, the defense sector, Photovoltaic (PV) systems, and Electric Vehicles (EV) due to their immense benefits when compared to their counterparts such as high charge density, life cycles, long battery life, and low discharge. Due to the boom in EVs and increasing demand for energy storage options, a lot of research is being carried out to increase the capacity of Li-ion batteries with decreased size and charging rates. For that, electrode material composition, ratios, and electrolytes play a vital role to get the best from the Li-ion battery fabrication in terms of energy density. In this study, the half-cell (Coin) fabrication method is presented for academic researchers and industrial R&D for material selection. The study presents the complete method of fabrication of Li-ion coin cells for the researchers to enable them to fabricate their high-quality half-coin cells with good reproducibility of half cells. The study also presents the chemistry of the electrochemical cells and requirements of the material selection for Anode, cathode, and electrolyte. By following the mentioned method, Half-cell is fabricated. The equivalent model of the Li-ion half-cell is discussed along with Galvanostatic measurements at different C rates. It was verified that the higher the C rates, the lower the capacity of the cell.