二成分系リンケイ酸塩ゾル-ゲルガラスのプロトン伝導におけるP₂O₅の役割

抄録

Sol-gel derived P₂O₅-SiO₂ glasses were studied and a remarkable improvement in protonic conduction was observed by increasing the P₂O₅ content. This was attributed to (1) the variation in glass structure including the reduction of the degree of cross-linking skeleton and the increase of specific surface area of glass due to the non-bridging oxygen (P=O) in P-O tetrahedron, (2) the formation of stronger hydrogen bond between hydroxyl group and P=O group as well as hydroxyl group and, (3) the p-π resonance effect in O_(3-t)PO(OH)_t unit.