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Brendan Jephcott

Comprehensive Battery Minerals ResearchComprehensive Battery Minerals Research
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SODIUM-ION BATTERY PRINCIPAL PRODUCTION METHOD

Today, lithium-ion battery production equipment is mainly divided into front-end equipment covering the electrode production process, mid-end equipment covering the cell assembly process, and back-end equipment covering battery cell activation and formation, capacity separation detection, and assembly into battery packs. The manufacturing process and equipment of sodium-ion batteries is compatible with lithium-ion batteries, where only slight equipment upgrades are needed to be used in the production of sodium-ion batteries, and therefore the equipment cash cost that needs to be invested is considerably low.

Production of a sodium-ion battery is similar to that of lithium-ion battery, which mainly includes pole piece manufacturing (cathode, anode, stirring, slurry-drying-coating) and battery assembly (rolling-die-cutting-winding/stacking). The main difference is that sodium-ion batteries can use aluminium foil as the anode current collector, so the cathode and anode can use the same aluminium tabs and related processes such as tab welding. The packaging form of sodium-ion batteries is similar to that of lithium-ion batteries, and can be divided into three categories: cylinder, soft package, and square hard case.

On the whole, an existing lithium-ion battery assembly line can be used to produce sodium-ion batteries with a slight modification, and the replacement cost of developing a sodium-ion battery production line is very low.

To learn more about the rise of sodium-ion batteries: https://lnkd.in/gdXFBYhA

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