| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a separator for batteries excelling in internal resistance.SOLUTION: In a separator for batteries combining a porous ceramic layer containing ceramic particulates and a supporting medium (porous film, woven cloth, unwoven cloth knit cloth or the like), the ceramic particulates are irregular-shaped silica (long-shaped silica, such as rod-shaped, bent or branched one, obtained by adding a salt forming a basic oxide to active silicic acid and performing hydrothermal synthesis, which serves as the raw material silica).</p> |
