Let me introduce you to lithium-ion batteries

Lithium batteries are divided into lithium batteries and lithium ion batteries. Cell phones and laptops use lithium-ion batteries, which are commonly referred to as lithium batteries. Batteries generally use materials containing lithium as electrodes, which are representative of modern high-performance batteries. The real lithium battery is rarely used in daily electronic products due to its high risk.

Lithium-ion batteries were first successfully developed by Sony Corporation of Japan in 1990. It embeds lithium ions into carbon (petroleum coke and graphite) to form a negative electrode (traditional lithium batteries use lithium or lithium alloy as the negative electrode). LixCoO2 is commonly used as the cathode material, and LixNiO2, and LixMnO4 are also used. The electrolyte uses LiPF6 + diethylene carbonate (EC) + dimethyl carbonate (DMC).

Petroleum coke and graphite are non-toxic materials for the negative electrode, and the resources are sufficient. Lithium ions are embedded in the carbon, which overcomes the high activity of lithium and solves the safety problems of traditional lithium batteries. The positive electrode LixCoO2 can reach the charge and discharge performance and life. The higher level reduces the cost, and in short, the overall performance of the lithium-ion battery is improved. It is expected that lithium-ion batteries will occupy a large market in the 21st century.

The reaction formula for charging and discharging lithium ion secondary batteries is LiCoO2+C=Li1-xCoO2+LixC