Which drying technologies are best adapted to lithium-ion battery production?

One objective of this study was to evaluate drying technologies and identify those that could be best adapted to lithium-ion battery cell production. Near-infrared and laser drying were found to be the best in terms of energy efficiency, cost savings and other parameters.

What is dry battery electrode technology?

Our review paper comprehensively examines the dry battery electrode technology used in LIBs, which implies the use of no solvents to produce dry electrodes or coatings. In contrast, the conventional wet electrode technique includes processes for solvent recovery/drying and the mixing of solvents like N-methyl pyrrolidine (NMP).

How a convection drying machine is used in lithium-ion battery cells?

Coupled electrode coating and convection drying machine for the use in lithium-ion battery cells The production step of drying is commonly carried out in a roll-to-roll process immediately after coating.

Can laser drying be used in the value chain of lithium-ion battery cells?

Fig. 11 shows an excerpt of possible applications of laser drying within the value chain of lithium-ion battery cells. During implementation, a distinction must be made between anode and cathode due to the different solvents and various process air treatments.

Is laser drying a complementary process step in the production of lithium-ion batteries?

Moreover, the use of laser drying as a complementary process step in the production of lithium-ion batteries needs to be investigated. This aims at the further reduction of the residual moisture reabsorbed after the actual electrode drying process.

Why do lithium-ion batteries need a vertical drying alignment?

Due to the long drying lengths, vertical drying alignments are only applicable to research and pilot plants with low band speeds. Within the value chain of lithium-ion battery cells, the energy consumption during the drying process corresponds to about one fifth of the total energy consumption .