多功能LaCo0.6Ni0.4O3-δ纳米纤维膜用于在广泛的温度范围内进行高性能氧气电催化
Lu Zou1, Weilin Kong1, Tong Sheng1
1School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei, 430073, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|December 24, 2024
概括
研究人员开发了La0.6Ni0.4O3-δ (LCN) 纳米纤维膜,用于氧减少 (ORR) 和氧演化 (OER) 反应. 这些先进的电极在室温和高温下表现出高效率,性能优于商业催化剂.
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
- 纳米技术 纳米技术
背景情况:
- 氧降解反应 (ORR) 和氧演化反应 (OER) 对能源应用至关重要.
- 传统的纳米纤维电极制造方法往往会降低结构完整性.
- 开发强大的,高性能电极用于ORR/OER跨温度范围是必不可少的.
研究的目的:
- 制造LaCo0.6Ni0.4O3-δ (LCN) 纳米纤维膜,具有用于ORR/OER的增强性能.
- 评估在室温和高温下LCN纳米纤维膜的催化活性和稳定性.
- 为了证明这些纳米纤维矿催化剂在固体氧化物细胞 (SOC) 中的潜力.
主要方法:
- 优化了用于制造LCN纳米纤维膜的电技术.
- 纳米纤维形态,表面积和多孔性的表征.
- 在室温和高温SOC中对ORR/OER活性进行电化学测试.
主要成果:
- LCN纳米纤维膜表现出高的特异性表面积和多孔性.
- 在室温下异常的ORR/OER催化活性,与Pt/C和RuO2.2相比.
- 在700°C的SOC中显著的ORR/OER性能,达到0.802W cm-2的峰值功率密度,具有出色的稳定性 (>180h).
结论:
- 开发的LCN纳米纤维膜为氧气电催化提供了强大且高效的电极.
- 这种方法利用高孔积和高表面积,在广泛的温度范围内提供卓越的性能.
- 纳米纤维矿电极为先进的能量转换设备提供了一个有前途的途径.
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