Development of hydrooxide ion-conductive layred double hydroxides with electron and light functions

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289230
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Hokkaido University
• Principal Investigator: Tadanaga Kiyoharu 北海道大学, 工学(系)研究科(研究院), 教授 (90244657)
• Co-Investigator(Kenkyū-buntansha): HIGUCHI MIKIO 北海道大学, 大学院工学研究院, 准教授 (40198990)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 層状複水酸化物 / 水酸化物イオン伝導性 / 可視光応答性光触媒 / 酸素還元反応 / アルカリ形燃料電池 / 金属－空気二次電池

Outline of Final Research Achievements

Zn-Al layered double hydroxide (LDH) thin films intercalated with Eosin Y were prepared by the sol-gel method with hot water treatment. The heat-treated Zn-Al Eosin-Y LDH thin film was confirmed to work as the electrode of a solar cell under visible light irradiation.　Powders of Zn-Al layered LDHs intercalated with eosin Y were also found to show the photocatalytic activity under visible light irradiation.
The ionic conductivity of (Ni, Mn)-Al LDHs and (Ni, Mn)-Fe LDHs intercalated with CO32- was found to be higher than that of Ni-Al LDH or Ni-Fe LDH. The addition of LDHs to the catalyst layer of an air-electrode increased the current for oxygen reduction reaction (ORR). H2-O2 fuel cells with Mg-Al LDHs as an electrolyte were confirmed to be operated.

Free Research Field

無機材料化学