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氧化浸的氧化阴极具有优越的电化学性能,用于固体氧化物燃料电池
Hao-Yang Li1, Jiyoon Shin1, Yujie Wu1,2
1School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
Nano letters
|October 31, 2024
概括
高性能固体氧化物燃料电池使用了一种新型的复合性阴极. 入氧化物增强了性能和稳定性,使功率密度翻了一番.
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) 对清洁能源具有前景.
- 像铁氧化物 (SFM) 这样的矿阴极具有潜力,但面临着挑战.
- 氧降解反应 (ORR) 动力学和长期稳定性对于SOFC的性能至关重要.
研究的目的:
- 为了提高SOFC的性能和稳定性.
- 为了研究氧化物-氧化物 (PCO) 透对SFM阴极的影响.
- 为了评估复合电极对中毒的抗性.
主要方法:
- 使用矿天极 (SFM) 制造固体氧化物燃料电池.
- 用氧化物 (PCO) 入SFM阴极.
- 电化学阻抗光谱 (EIS) 用于评估ORR动力学和稳定性.
- 长期性能测试超过50小时.
- 分析阴极降解机制,包括中毒.
主要成果:
- 透PCO显著增强了氧降解反应动力学.
- 透PCO的SFM阴极表现出改善的长期稳定性,降低阻抗降解.
- 复合阴极通过抑制的降解,增加了对中毒的抵抗力.
- 与800°C的裸体SFM阴极相比,使用PCO透的SFM阴极的SOFC的功率密度翻了一番.
结论:
- 氧化物透是改进基于SFM的SOFC阴极的有效策略.
- 复合性阴极提供了增强的电化学性能,稳定性和耐毒性.
- 这种方法代表了高性能固体氧化物燃料电池的重大进步.
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