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在Pt/FeCo分层双氧化物中进行中等度工程,以实现协同增强的性进化

Hongqin Wang¹, Jinyun Zhang¹, Wang Lu¹

¹School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, Guizhou 550025, China.

Langmuir : the ACS journal of surfaces and colloids

|February 17, 2026

概括

中等工程创造了一种新的低电催化剂,用于高效的演化反应 (HER). 这一进步对于开发稳定且具有成本效益的绿色技术至关重要.

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
绿色化学绿色化学

背景情况:

有效的电催化剂对于通过演化反应 (HER) 生产绿色至关重要.
减少催化剂中的 (Pt) 负载对于经济可行性至关重要.
开发稳定和活跃的催化剂仍然是一个重大挑战.

研究的目的:

为HER开发一种高效,稳定的电催化剂,具有低负载.
为催化剂设计引入一种新的"中等工程"策略.
通过这种新策略,通过FeCo层双氧化物 (LDH) 支持的Pt的性能进行调查.

主要方法:

为了合成催化剂,采用了两步热水制方法.
中等工程被用来创建一个Pt/FeCo LDH混合电催化剂 (MEH) 在泡.
使用了包括X射线光电谱 (XPS) 在内的系统性表征技术.

主要成果:

Pt/FeCo LDH-MEH电催化剂在3D花样纳米结构上展示了分散良好的Pt纳米粒子,表面缺陷丰富.
观察到Pt和FeCo LDH支之间的强烈电子相互作用,调整了电子结构.
催化剂表现出极好的HER活性,达到低超电位 (19 mV在10 mA cm-2和64 mV在100 mA cm-2) 和低Tafel斜率 (30.1 mV dec-1).

结论:

中等的工程策略成功生产了高性能,低Pt负载的电催化剂.
与商业Pt/C相比,开发的Pt/FeCo LDH-MEH催化剂提供了优越的HER活性,稳定性和降低的电荷转移阻力.
这种方法为绿色技术中的先进电催化剂提供了一个有前途的设计策略.

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