The difference between lithium metal battery and lithium ion battery

- Aug 29, 2018 -

The main difference is that the lithium metal battery is a disposable battery, and the lithium ion battery is a rechargeable battery. Lithium-ion batteries are an improved version of lithium batteries. Lithium batteries have been around for a long time, but lithium is a highly active metal. It is not safe to use, and it often burns and bursts during charging (in fact, lithium-ion batteries can also be like this, but Less), later there is a modified lithium-ion battery, adding components that can inhibit the active lithium (such as cobalt, manganese, etc.) so that lithium battery is truly safe, efficient and convenient, and the old lithium battery is also It was basically eliminated. Lithium battery is a kind of energy storage battery using metal lithium as the electrode. Its specific energy is very high. It was divided into disposable battery and rechargeable lithium battery in the early stage. However, after the accident of rechargeable lithium battery, it is rarely seen in the civilian market. Rechargeable lithium battery. Lithium-ion rechargeable batteries actually use the difference in concentration of lithium ions for energy storage and discharge, and there is no metal lithium in the battery. The metal lithium battery has the same principle as the ordinary dry battery. It uses metal lithium as an electrode to generate electric energy through corrosion or oxidation of metal lithium. When it is used up, it is discarded and cannot be charged. Lithium-ion batteries generally use lithium cobaltate as the positive electrode and carbon as the negative electrode. The electrolyte is filled in the middle to form a channel for ion free, and the separator is used to separate the positive and negative electrodes to prevent short circuit. When charging, lithium ions migrate from the lithium cobaltate due to the electric field, and pass through the pores in the separator in the electro-hydraulic solution, and reach the negative electrode and react with carbon to form lithium carbide; in contrast, the lithium ion returns to the positive electrode. It is the charging and discharging process of a lithium ion battery. Lithium battery, anode: Li->(Li+)+e cathode: MnO2+(Li+)+e->MnOOLi This is relatively early, and now there is a new cathode material. It is no longer used because it is prone to explosion caused by dendrites. Lithium-ion batteries have a layered material that is generally layered and can dissolve and dissolve lithium ions. Current is generated when ions enter and exit. When charging, lithium ions are released from the positive electrode; when discharged, they are released from the negative electrode.