To provide a method for producing a sufficiently flexible sheet containing a lithium phosphorus oxynitride compound.
The present invention solves the problem by providing a method for producing a sheet containing a lithium phosphorus oxynitride compound comprising the preparation step of preparing a raw material composition containing a raw material compound having an Li element and a PO4 skeleton, a nitrogen-containing compound which nitrides the raw material compound and has polymerizability, and a strong alkali compound, the synthesis step of obtaining a lithium phosphorus oxynitride compound-containing composition by performing the synthesis from the raw material composition into the lithium phosphorus oxynitride and the polymerization of the nitrogen-containing compound by firing the raw material composition, and the molding step of molding the lithium phosphorus oxynitride compound-containing composition into a sheet.
OKI EIKAN
Kishimoto Tatsuto
Tetsuro Hoshino
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