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协同批量和表面工程用于快速和持久的可逆质子陶电化学电池空气电极电极

Xi Chen¹, Na Yu¹, Yufei Song²

¹Department of Building and Real Estate, Research Institute for Sustainable Urban Development (RISUD) and Research Institute for Smart Energy (RISE), The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, China.

Advanced materials (Deerfield Beach, Fla.)

|May 27, 2024

概括

工程空气电极增强可逆质子陶电化学电池 (R-PCECs) 以实现高效的能量转换. 这种新型纳米复合材料增强了氧气反应,提高了动力密度和耐用性,以实现可持续的生产.

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:

可逆质子陶电化学电池 (R-PCEC) 对高效的发电和生产具有前景.
空气电极中缓慢的氧降解/进化反应 (ORR/OER) 在中间温度下限制了R-PCEC的性能.

研究的目的:

开发一种新的空气电极纳米复合材料,以提高R-PCEC的性能.
为了同时优化散装金属氧键和表面纳米催化剂的形成,以改善ORR/OER动力学.

主要方法:

同时优化散相金属-氧键和金属氧化物纳米催化剂表面的现场形成.
一个三导 (O2-,H+,e-) 空气电极纳米复合材料的工程:Ba (Co) 0.4Fe (Fe) 0.4Zr (Zr) 0.1Y (Y) 0.1Ni (Ni) 0.95F (F) 0.1O (O) 2.9-δ.

主要成果:

工程空气电极表现出了显著的ORR/OER催化活性和耐用性.
峰值功率密度显著增加,从626到996mW cm-2 .
在100小时的自行车周期内实现了高度稳定的可逆性.

结论:

开发的纳米复合材料为高性能R-PCEC空气电极提供了合理的设计策略.
这种方法显著提高了运营活动和稳定性,以实现高效和可持续的能源转换和储存.
这些发现为清洁能源技术中先进的R-PCEC应用铺平了道路.

关键词:

空气电极电极是空气电极.金属氧化物纳米催化剂金属-氧的债券.氧减少/进化反应的反应.可逆的质子陶电化学电池.

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