Lithium-ion electrolyte degassing requires robust and reliable vacuum pump without downtime losses. Dry vacuum technology is prefered by major Lithium-ion battery manufacturers owing to their performance, proven reliability and low cost of ownership.
While oil-sealed rotary pumps have been traditionally used in the Lithium-ion battery production process, dry screw vacuum technology is cost-effective and environmentally friendly.
Lithium-ion battery production consists of several steps such as the mixing of chemical slurry, the vacuum drying of electrodes, filling, degassing and sealing, which are all carried out under a vacuum environment to remove solvents as well as moisture and gas traces.
The process of electrolyte degassing is carried out in vacuum after prefilling the battery cells with electrolyte solution. This ensures the Lithium-ions can move freely, enabling efficient charging and discharging. It is essential to remove moisture, gases and contaminants to retain the purity of the electrochemistry for optimum performance and long life of the battery cells. Chemicals such as Dimethoxyethane (DME), Dioxolane, and Lithium Hexafluorophosphate could be present in the solution and the GXS materials of construction have been developed to be compatible with these type of harsh process materials.
Edwards offers proven solutions and applications expertise in all Lithium-ion Battery manufacturing processes requiring vacuum.
The GXS dry pumps take vacuum performance to the next level. With a unique screw technology and world-leading, high-efficiency drives enabling advanced temperature control and long service intervals, you can benefit from best-in-class pumping speeds and low running costs for many years to come.
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