Dielectrical reliability improvement for increasing output of solid oxide fuel cell system

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04249
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Energy engineering
• Research Institution: University of Tsukuba
• Principal Investigator: Ishida Masayoshi 筑波大学, システム情報系, 教授 (30272173)
• Co-Investigator(Kenkyū-buntansha): 安芸 裕久 筑波大学, システム情報系, 准教授 (70356343) ; 花田 信子 筑波大学, システム情報系, 助教 (00606634) ; 中山 知紀 筑波大学, システム情報系, 助教 (90707853)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 固体酸化物形燃料電池 / 高温酸化還元雰囲気 / 直流絶縁特性 / 無機絶縁材料 / 空間電荷

Outline of Final Research Achievements

The electrical insulation properties and morphological change of alumina in redox gas atmosphere of solid oxide fuel cells (SOFC) at high temperatures (600-900℃) were evaluated. It is shown that difference of gases greatly effects these properties. In the study on distance dependence of creepage electrical insulation properties, it was clarified that properties are not proportional to creepage distance. In applying inorganic materials to space charge distribution measurement, the distribution tended to reverse in most materials. Such a tendency was not observed in some inorganic materials which have different electrical properties, and this suggests the electrical properties have a large effect as a factor.

Free Research Field

エネルギー工学