Advanced parametrization for the production of high-energy solid-state lithium pouch cells containing polymer electrolytes

초록

Lithium batteries with solid-state electrolytes are an appealing alternative to state-of-the-art non-aqueous lithium-ion batteries with liquid electrolytes because of safety and energy aspects. However, engineering development at the cell level for lithium batteries with solid-state electrolytes is limited. Here, to advance this aspect and produce high-energy lithium cells, we introduce a cell design based on advanced parametrization of microstructural and architectural parameters of electrode and electrolyte components. To validate the cell design proposed, we assemble and test (applying a stack pressure of 3.74MPa at 45 degrees C) 10-layer and 4-layer solid-state lithium pouch cells with a solid polymer electrolyte, resulting in an initial specific energy of 280Whkg(-1) (corresponding to an energy density of 600WhL(-1)) and 310Whkg(-1) (corresponding to an energy density of 650WhL(-1)) respectively.

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