A solution is prepared that contains (A) a polymer compound that includes at least one of a hydrolyzable polymer compound or a thermally-decomposable polymer compound, (B) an oxoacid-based compound that includes at least one of a phosphate-based compound, a sulfate-based compound, a sulfonate-based compound, or a perchlorate-based compound, and (C) a laminate of layered substances, and the solution is irradiated with at least one of sonic waves or radio waves, or the solution is heated.
制备含有以下物质的溶液:(A) 包括可
水解聚合物化合物或可热分解聚合物化合物中至少一种的聚合物化合物;(B) 包括
磷酸盐基化合物、
硫酸盐基化合物、
磺酸盐基化合物或
高氯酸盐基化合物中至少一种的氧酸基化合物;(C) 层状物质的层压板。