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在CoP@CoNi层叠的双氧化物中固定金集群,以准备高性能和稳定的电极,以在高电流密度下高效地分水

Songjie Li¹, Tiantian Liu¹, Shuang Yu¹

¹Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001 Henan, China; National Key Laboratory of Coking Coal Green Process Research, Zhengzhou University, Zhengzhou 450001, Henan, China.

Journal of colloid and interface science

|January 16, 2025

概括

研究人员开发了一种新的电极,通过水分裂有效生产气. 这种先进的催化剂显示出高稳定性和低能耗要求,为工业应用铺平了道路.

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
可再生能源可再生能源是可再生能源.

背景情况:

电催化水分裂对于清洁能源至关重要,但在高电流密度下面面临着催化剂效率和稳定性的挑战.
开发具有较低超电位的强大的催化剂对于实际的生产至关重要.

研究的目的:

合成和评估一种新的基于双氧化物 (LDH) 的新型CoP@CoNi层电极,用于高效的电催化水分裂.
为了提高氧和进化反应的催化性能和稳定性.

主要方法:

采用两步电沉积工艺,创建了用于氧气演变的CoP@CoNi LDH电极.
一种in-situ氧化方法准备了一个超性CoP@CoNi LDH-Pt电极,为进化定集群.
集成的CoP@CoNi LDH-Pt下载下载CoP@CoNi LDH系统进行了整体水电解测试.

主要成果:

氧进化反应电极表现出373mV的超电位和64.2mV/dec的Tafel斜率.
进化反应电极显示过多电位为119 mV,Tafel斜率为33.6 mV/dec.
完整的水电解系统以1.96V的电压运行,电流密度为1000mA/cm2,并保持了160小时的稳定性.

结论:

开发的异构结构和超性电极显著改善了电催化动力学和质量转移,以实现高效的水分裂.
固定活性成分提高了催化剂的稳定性,这对于长期的工业生产至关重要.
这种方法为大规模制造高性能水电解催化剂提供了一个有前途的途径.

关键词:

电极定位是一种电极定位.异构结构异构结构高电流密度的高电流密度.有层的双氧化物.总体而言,水分化是水分化的.过渡金属化物过渡金属化物

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