溶解铁对水电解性能的动态和相互连接的影响
Fubiao Di1, Cong Chen1, Junxia Shen1
1School of Physical Science and Technology, Jiangsu Key Laboratory of Frontier Material Physics and Devices, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University 1 Shizi Street Suzhou 215006 China rlfan@suda.edu.cn mrshen@suda.edu.cn.
Chemical science
|May 5, 2025
概括
溶解的铁通过改善和氧的演化反应来增强性水电解 (AWE). 优化铁的添加降低了电池电压和功耗,以实现高效的水分.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 在性水电解 (AWE) 中溶解的铁 (Fe) 具有双重作用:潜在的污染物和性能增强剂.
- 了解Fe影响的复杂机制对于优化AWE系统至关重要.
研究的目的:
- 研究溶解铁对AWE电池电压和反应超电位的动态影响.
- 阐明铁对不同阴极和阳极材料产生演变反应 (HER) 和氧演变反应 (OER) 的影响机制.
主要方法:
- 对HER和OER的电池电压和超电位的动态测量.
- 对阴极表面铁沉积的分析及其对催化活性的影响.
- 在阳极氧化物层上对铁液和合并动态的研究.
主要成果:
- 溶解铁在裸体Ni网 (BN) 阴极上显著增强了HER,但对Raney® Ni网 (RN) 的影响很小.
- 铁通过浸出-纳入平衡改善BN阳极上的OER,但连续阴极沉积会耗尽电解质Fe,随着时间的推移减少阳极活性.
- 优化Fe ((iii) 添加到BN阴极//BN阳极系统中,在0.4 A cm-2处实现了1.95 V的低电池电压,减少了19.3%的功耗.
结论:
- 在AWE系统中,溶解铁可以被战略性地利用来增强HER和OER.
- 优化铁度和管理其动态行为是实现高性能,节能性水电解的关键.
- 一个简单,坚固的BN//BN组件与优化的铁添加提供了一个有前途的途径,以节省成本的水分离.
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