Development of metal-air batteries operating at intermediate temperatures using composite ion conductors with heterointerfaces

2014 Fiscal Year Final Research Report

• Project/Area Number: 24651071
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental technology/Environmental materials
• Research Institution: The University of Tokyo
• Principal Investigator: OTOMO JUNICHIRO 東京大学, 新領域創成科学研究科, 准教授 (90322065)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 省エネルギー技術 / 金属－空気二次電池 / 酸化物イオン伝導体 / プロトン伝導体 / 金属酸化物 / 水素生成

Outline of Final Research Achievements

In this study, novel metal-air batteries having high energy density were examined at intermediate temperatures using inorganic ion conductors. A composite ion conductor consisting of microparticles was developed based on unique ion transport at interfaces as well as the development of a single-phase ion conductor. In addition, hydrogen production via steam-iron reaction, i.e., partial oxidation of reduced metal oxide by water vapor was investigated to clarify the effect of support materials on hydrogen production rate. Through the observation of charge and discharge processes in the metal-air batteries, the guiding principle of the system design was also discussed.

Free Research Field

電気化学、反応工学