Energy storage cell manufacturing process

Why is battery cell formation important?

The battery cell formation is one of the most critical process steps in lithium-ion battery (LIB) cell production, because it affects the key battery performance metrics, e.g. rate capability, lifetime and safety, is time-consuming and contributes significantly to energy consumption during cell production and overall cell cost.

Can modular material and energy flow models be used for battery cell production?

Conventional life cycle inventories (LCIs) applied in life cycle assessment (LCA) studies are either numerical or parametrized, which inhibits their application to changing developments in battery research. Therefore, this article presents an approach to develop modular material and energy flow (MEF) models for battery cell production.

What is battery manufacturing process?

Figure 1 introduces the current state-of-the-art battery manufacturing process, which includes three major parts: electrode preparation, cell assembly, and battery electrochemistry activation. First, the active material (AM), conductive additive, and binder are mixed to form a uniform slurry with the solvent.

Should new battery manufacturing technologies be transferable to beyond Lib manufacturing?

Therefore, when evaluating the new manufacturing technologies, transferability to beyond LIB manufacturing should be considered. Although the invention of new battery materials leads to a significant decrease in the battery cost, the US DOE ultimate target of $80/kWh is still a challenge (U.S. Department Of Energy, 2020).

Does micro-level manufacturing affect the energy density of EV batteries?

Besides the cell manufacturing, “macro”-level manufacturing from cell to battery system could affect the final energy density and the total cost, especially for the EV battery system. The energy density of the EV battery system increased from less than 100 to ∼200 Wh/kg during the past decade (Löbberding et al., 2020).

What is formation in LIB cell manufacturing?

Formation is the final active process step in LIB cell manufacturing. The process affects the quality of the freshly assembled cells and contributes significantly to the overall cost, accounting for up to 33% of the production cost. 12,13 Formation typically involves multiple charge and discharge cycles.