一种新的伊稳定和复合电解质降低了固体氧化物燃料电池的工作温度至400°C
Yu Liu1, Liwen Zuo1, Yulian Ye1
1School of Microelectronics, Hubei University Wuhan Hubei 430062 PR China wangxunying@hubu.edu.cn baoyuanw@163.com liuchunlei7788945@163.com.
RSC advances
|November 29, 2023
概括
伊特里亚稳定- (YSZ-CeO2) 复合电解质使在较低温度下高效的固体氧化物燃料电池 (SOFC) 成为可能. 这种材料显著提高了用于先进的低温SOFC应用的离子导电性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 能源转换 能源转换
背景情况:
- 固体氧化物燃料电池 (SOFC) 在实际使用中面临着工作温度和离子导电性方面的挑战.
- 开发具有高离子导电性的替代电解质材料对于推进SOFC技术至关重要.
- 降低运行温度是降低成本和提高SOFC耐用性的关键.
研究的目的:
- 研究伊特里亚稳定- (YSZ-CeO2) 复合材料作为固体氧化物燃料电池的电解质的潜力.
- 在降低工作温度下使用YSZ-CeO2电解质评估SOFC的性能.
- 了解YSZ-CeO2复合材料中增强的离子导电性背后的机制.
主要方法:
- 制造用于作为SOFC电解质的YSZ-CeO2复合材料.
- 使用YSZ-CeO2电解质构造和测试对称的SOFC.
- 性能表征,包括测量各种温度下的最大功率密度.
- 材料特性分析激活能量和离子导电机制.
主要成果:
- 基于YSZ-CeO2的SOFC在450°C达到最大功率密度为680mW cm-2,在430°C达到最大功率密度为510mW cm-2,在410°C达到最大功率密度为330mW cm-2,在390°C达到最大功率密度为200mW cm-2.
- 描述显示,YSZ-CeO2复合物的激活能量显著下降.
- 离子传导的增强归因于复合材料中的接口运输现象.
结论:
- YSZ-CeO2复合材料在降低的工作温度下表现出色.
- 观察到的离子导电性增强与改进的接口传输有关.
- 作为先进的低温固体氧化物燃料电池的候选电解质,YSZ-CeO2复合物显示出显著的希望.
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