CONDUCTIVE LAMINATE FOR WATER SPLITTING PHOTOCATALYTIC ELECTRODE, PRODUCTION METHOD THEREOF, AND WATER SPLITTING PHOTOCATALYTIC ELECTRODE

To provide a conductive laminate for a water splitting photocatalytic electrode in which performance and productivity are improved.SOLUTION: The present invention relates to a conductive laminate for a water splitting photocatalytic electrode, a production method thereof, and the water splitting photocatalytic electrode. The conductive laminate for the water splitting photocatalytic electrode comprises a cationic polymer coated substrate and a silver particle layer which is formed on the surface of the substrate. The silver particle layer comprises a current collecting layer formed on the substrate and a contact layer formed on the current collecting layer. The current collecting layer comprises spherical silver particles. The silver particles in the current collecting layer exist in a dense manner. The contact layer comprises planar silver particles. The silver particles in the contact layer exist sparsely. The average particle diameter of the silver particles in the contact layer is larger than the average particle diameter of the silver particles in the current collecting layer. The cationic polymer is a polydiallyldialkylammonium salt.SELECTED DRAWING: Figure 1 【課題】本発明は、性能及び生産性の向上した水分解光触媒電極用導電性積層体を提供することを目的とする。【解決手段】本発明は、カチオンポリマーを被覆した基板と、前記基板の表面に形成した銀粒子層とを有する、水分解光触媒電極用導電性積層体であって、前記銀粒子層は、前記基板上に形成した集電層と、前記集電層上に形成したコンタクト層からなり、前記集電層は球形の銀粒子からなり、前記集電層において前記銀粒子は密に存在し、前記コンタクト層は平板状の銀粒子からなり、前記コンタクト層において前記銀粒子は疎に存在し、前記コンタクト層の前記銀粒子の平均粒子径が、前記集電層の前記銀粒子の平均粒子径より大きく、前記カチオンポリマーがポリジアリルジアルキルアンモニウム塩である、水分解光触媒電極用導電性積層体、その製造方法及び水分解光触媒電極に関する。【選択図】図１