权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

DEVELOPMENT OF THIN FILM SOLID OXIDE FUEL CELLS

薄膜固体氧化物燃料电池的开发

基本信息

批准号：
05453190
负责人：
YAMAZAKI Yohtaro
金额：
$ 3.9万
依托单位：
TOKYO INSTITUTE OF THECNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05453190/
关键词：
SOFC Inconel thin film cell current collector electron beam evaporation stress relaxation stack technology stress distribution 熱応力緩和機能を有するジルコニア薄膜

项目摘要

Preparation of single cells and studies of their stacking technologies are the most important for the development of solid oxide fuel cells. In this study, the main objective is to develop stacking technologies for thin film planar cells and to assembled them, that is, the major problems on the stackings of planar cells such as the mechanical strength, temperature distributions, thermal expansion and gas sealing were intensively investigated.The results are as follows.1) Analysis of thermal stresses developed in planar stacksIn order to relax the thermal stresses in planar SOFC stacks, the temperature dependence of the coefficient of friction between alloy separators and zirconia plates was measured. A new stacking method for planar cells including the protection of thin film cells are simulated using the results of the friction measurement.2) Development of flexible current collectors for air electrodesFlexible current collectors which reduce the thermal stresses developed in air electrodes of planar SOFCs are developed. They consist of heat resisting alloy wires coated withLa (Sr) MnO_3fine particles. The flexible current collector was combined with the stress analysis mentioned in 1) , and a stack method for planar thin film cells was newly developed. The cell stack was named Soft Stack. In the Soft Stack, the thin film cells were supported with zirconia rings which reduced the thermal stresses induced by the difference in thermal expansion coefficient between the heat resisting alloy and zirconia. The flexible current collectors were prepared with nickel-chromium alloy foils.

单电池的制备及其堆积技术的研究是固体氧化物燃料电池发展的关键。本研究的主要目标是开发薄膜平板电池的堆叠技术并进行组装，即对平板电池的堆叠过程中的机械强度、温度分布、热膨胀和气体密封等主要问题进行了深入的研究。结果如下：1)平面电池堆叠中的热应力分析为了缓和平面SOFC堆叠中的热应力，测量了合金隔板与氧化锆板之间的摩擦系数与温度的关系。利用摩擦测量结果，模拟了一种新的平板电池堆叠方法，包括对薄膜电池的保护。2)空气电极柔性集流器的研制开发了柔性集热器，它可以降低平板SOFC空气电极中产生的热应力。它们是由包覆有La(Sr)MnO_3微粒的耐热合金丝组成。将柔性集电体与1)中提到的应力分析相结合，提出了一种适用于平面薄膜电池的叠加法。该电池组被命名为Soft Stack。在软堆中，薄膜电池由氧化锆环支撑，从而降低了耐热合金与氧化锆热膨胀系数不同所产生的热应力。用镍铬合金箔制备了柔性集电体。