在碳化合物-空气混合物中的低工作温度固体氧化物燃料电池
1Department of Structure Formation Process, National Industrial Research Institute of Nagoya, Nagoya 462-8510, Japan. Graduate School of Human Information, Nagoya University, Nagoya 466-0804, Japan.
Science (New York, N.Y.)
|June 17, 2000
概括
这项研究表明,使用基于的电解质的单固体氧化物燃料电池,可以实现高电机力和低于773 K的功率密度.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 能源转换 能源转换
背景情况:
- 固体氧化物燃料电池 (SOFC) 提供高效的能量转换.
- 对于更广泛的应用,SOFCs的较低工作温度是可取的.
- 基于Ceria的电解质对中温SOFCs显示出前景.
研究的目的:
- 为了评估单SOFC与基于基的固体电解质的性能.
- 为了研究细胞在低于773凯尔文的温度下表现的行为.
- 为了确定发电能力和内部电阻.
主要方法:
- 一个单室固体氧化物燃料电池的制造和测试.
- 使用基于基的固体电解质.
- 使用乙或和空气混合物在773 K以下的电池运行.
主要成果:
- 电池产生了大约900毫伏的电机动力.
- 基于电解质的电解质表现出纯的离子导电性.
- 发现电极反应电阻是可以忽略不计的.
- 在773 K时达到403 mW/cm2的峰值功率密度,在623 K时达到101 mW/cm2.
结论:
- 基于Ceria的固体电解质在中间温度下对单 SOFC 有效.
- 电池设计尽量减少内部电阻,从而产生高功率输出.
- 这项技术有可能用于高效,低温的燃料电池应用.
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