What is a Sodium-ion Battery? And What are the advantages and disadvantages of Sodium-ion Battery?

Contemporary Amperex Technology Co., Ltd. (CATL Battery) launched the first-generation sodium-ion battery with the world's highest energy density of 160Wh/kg on July 29, which attracted great attention from the battery industry; and what is a Sodium-ion Battery? And What are the advantages and disadvantages of Sodium-ion Battery?

Sodium-ion battery

What is a Sodium-ion Battery?

The sodium-ion battery has a similar working principle to the lithium-ion battery. Sodium ions also shuttle between the cathode and anode. However, compared with lithium ions, sodium ions have a larger volume and higher requirements regarding structural stability and the kinetic properties of materials. This has become a bottleneck for the industrialization of sodium-ion batteries.

Advantages of sodium-ion batteries:

sodium resources are more abundant, and the global distribution is even; the cost of sodium-ion batteries is about 30% lower than that of lithium batteries, and the cost advantage is obvious; sodium-ion batteries are safer and are not easy to produce lithium dendrites.

Disadvantages of sodium ion batteries:

lower energy density of sodium ion batteries; short cycle life; and the industrial chain is still incomplete.

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