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一个富有缺陷的银电极与氧化纳米粒子用于性进化反应

Zhanyuan Wang¹, Chuanqi Cheng¹, Wenjing Kang¹

¹School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China. ruiz@tju.edu.cn.

Chemical communications (Cambridge, England)

|June 2, 2025

概括

使用冷压技术制造的新型白银/氧化催化剂显示了性演变反应的高活性和耐用性,这对于工业水电解至关重要.

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
催化剂是一种催化剂.

背景情况:

开发高效的演化反应 (HER) 催化剂对于工业水电解至关重要.
目前的催化剂经常面临成本,活性和长期稳定性方面的挑战.

研究的目的:

使用可扩展的制造方法,为性HER设计一种低成本,高活性和耐用的催化剂.
通过冷压制制备的银/氧化 (Ag/Ni(OH) 电极的性能和潜在机制的研究.

主要方法:

使用快速和可扩展的冷压技术制造Ag/Ni(OH) 2电极.
在性介质 (1M KOH) 中对催化剂活性和耐久性的电化学表征.
使用动态同位素效应 (KIE) 和 tert-butanol (TBA) 火实验的机制研究.

主要成果:

自支持的Ag/Ni(OH) 2催化剂表现出高活性,在10mA cm-2时具有66mV的超电位.
观察到卓越的长期耐用性,在200小时的100 mA cm-2的连续反应中保持性能.
机械学研究表明,在Ag/Ni (OH) ₂接口上加速水解离,并优化了吸附/脱附.

结论:

冷压方法是一种生产高效和稳定的性HER催化剂的多功能策略.
富有缺陷的Ag基板和Ag/Ni(OH) ₂接口对催化剂的性能有很大的贡献.
这种方法对水电解中的工业应用具有前景.

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