Introduction to lithium-ion battery

Lithium batteries are divided into lithium batteries and lithium-ion batteries. Both mobile phones and laptops use lithium-ion batteries, commonly known as lithium batteries. Batteries generally use materials containing lithium as electrodes, which are representative of modern high-performance batteries. However, real lithium batteries are rarely used in daily electronic products due to their high risk.
Lithium ion batteries were first successfully developed by Sony Corporation of Japan in 1990. It embeds lithium ions in carbon (petroleum coke and graphite) to form negative electrode (lithium or lithium alloy is used as negative electrode for traditional lithium batteries). LixCoO2 is commonly used as the positive electrode material, as well as LixNiO2 and LixMnO4. The electrolyte uses LiPF6+ethylene carbonate (EC)+dimethyl carbonate (DMC).
Petroleum coke and graphite as anode materials are non-toxic and have sufficient resources. Lithium ion is embedded in carbon, which overcomes the high activity of lithium and solves the safety problems existing in traditional lithium batteries. Positive LixCoO2 can reach a high level in charging, discharging performance and life, reducing the cost. In short, the comprehensive performance of lithium ion batteries has been improved. It is expected that lithium-ion batteries will occupy a large market in the 21st century.