高质子导电性在xCuO/(1-x) CeO2 CuO自核和电子离子合诱导的电解质中
Muhammad Shahid Sharif1, Sajid Rauf2, Zuhra Tayyab2
1School of Energy and Environment, Southeast University, 2 Sipailou, Xuanwu District, Nanjing, 210096, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 27, 2025
概括
低温固体氧化物燃料电池 (LT-SOFC) 面临导电性挑战. 这项研究引入了 CuO/CeO2 膜与电子离子合,实现高离子导电性和功率密度,以实现高效的能量转换.
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:
- 低温固体氧化物燃料电池 (LT-SOFC) 提供高效的能量转换,但受到电解质中低离子导电率的限制.
- 传统的SOFC在高温下运行,这带来了物质和运营方面的挑战.
研究的目的:
- 为LT-SOFCs开发具有增强离子导电性的新型半导体离子膜.
- 为了研究电子离子 (E-I) 合的机制,以改善离子传输.
- 在降低工作温度下,在LT-SOFC中实现高功率密度.
主要方法:
- 制造和表征xCuO/(1-x) CeO2 (CCO) 半导体离子膜.
- 研究离子导电性及其对组成和温度的依赖.
- 使用密度函数理论 (DFT) 计算来理解界面电荷转移和离子迁移机制.
主要成果:
- 最佳的0.2CuO/0.8CeO2组合表现出超过0.15 S cm-1.1的离子导电性.
- 在CuO/CeO2异质连接处的电子离子合被确定为增强离子传输的关键机制.
- 在500-550°C时达到750-900mW cm−2的特殊功率密度,在300°C时达到78mW cm−2的特殊功率密度.
结论:
- O/CeO2膜显示出作为LT-SOFC的最先进的电解质的潜力.
- 电子离子合有效地弥合了LT-SOFC中的导电性能差距.
- 这种方法使优越的离子传输和可持续能源解决方案的实际应用成为可能.
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