How sodium-ion batteries work
The charging time of sodium-ion batteries can be shortened to 1/5 of that of lithium-ion batteries. The main feature of sodium-ion batteries is the use of Na+ instead of expensive Li+. In order to adapt to sodium-ion batteries, the positive electrode materials, negative electrode materials and electrolytes must be changed accordingly. Compared with lithium elements, the advantage of sodium-ion batteries is that they are rich in resources, and sodium resources account for about 2.64% of the earth's crustal element reserves. The method of obtaining sodium elements is also very simple, so compared with lithium-ion batteries, sodium-ion batteries will be more expensive Advantages.
The working principle of sodium-ion batteries is similar to that of lithium-ion batteries, which uses sodium ions to intercalate between the positive and negative electrodes to achieve charge and discharge. When charging, Na+ is extracted from the positive electrode and embedded in the negative electrode through the electrolyte, and at the same time, the compensation charge of the electrons is supplied to the negative electrode through an external circuit to ensure the charge balance of the positive and negative electrodes. The opposite is true during discharge, Na+ is deintercalated from the negative electrode and inserted into the positive electrode through the electrolyte. Under normal charge and discharge conditions, the intercalation and deintercalation of sodium ions between the positive and negative electrodes does not destroy the basic chemical structure of the electrode material.
As an important class of energy storage batteries, sodium-ion batteries have the advantages of high specific energy, good safety performance, and low price.
BQC has its own battery energy storage system BMS research and development team, providing joint design and other technical support for energy storage customers. At the same time, our production capacity can provide customers with high-quality and efficient production services.
