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超快的液体 Joule 加热到in situ制造和稳定NiFe-LDH,以增强氧气演化电催化

Linhui Cui¹, Feng Liu¹, Shaqi Fu¹

¹Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China. feng.liu@usts.edu.cn.

Chemical communications (Cambridge, England)

|December 24, 2025

概括

我们开发了一种超快的液体焦尔加热方法,以创建稳定的-铁层双氧化物 (NiFe-LDH) 纳米板. 这种技术提高了氧气演化反应 (OER) 的性能和耐用性.

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
纳米技术纳米技术

背景情况:

开发高效的电催化剂对于能源转换技术至关重要.
铁层双氧化物 (NiFe-LDH) 显示出氧化演化反应 (OER) 的前景,但往往受到不良稳定性和聚合的影响.
需要在现场制造方法来控制纳米结构并增强催化活性.

研究的目的:

报告一种新的超快的液体焦尔加热 (ULJH) 策略,用于NiFe-LDH纳米板的现场制造和稳定.
研究ULJH对NiFe-LDH的形态,结构和OER性能的影响.
为了证明氧气演化反应的增强催化活性和运行稳定性.

主要方法:

超快的液体焦勒加热 (ULJH) 用于NiFe-LDH纳米板的现场合成.
使用电子显微镜和电化学技术,对制造的纳米片进行表征.
在电化学设置中评估OER性能和长期稳定性.

主要成果:

ULJH有效地抑制了聚合,产生了超薄的NiFe-LDH纳米片,暴露了活性边缘.
实现了强大的界面结合,确保了高的操作稳定性.
NiFe-LDH-JH催化剂表现出极好的OER性能,在262 mV超电位下达到100 mA cm-2.
催化剂在经过300小时的运行后,在最小减弱的情况下保持了性能.

结论:

ULJH策略是制造稳定和高度活性NiFe-LDH纳米板的可行方法.
与传统方法相比,这种方法显著提高了OER的性能和耐用性.
开发的催化剂有可能用于水分和其它能量转换系统.

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