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-FeOx纳米颗粒在化碳支上:一种强大的双功能催化剂,用于-空气电池

Yaxin Sun¹, Zhen Yang², Boqin Li²

¹Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China; Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.

Journal of colloid and interface science

|October 28, 2025

概括

这项研究开发了一种新的Fe-FeOx/NC催化剂,用于空气电池 (ZABs),使用闪光纳米沉和碳浴方法. 催化剂对氧气演变和还原反应表现出极好的双功能活性,使ZABs具有高性能和稳定性.

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,具有成本效益的双功能电催化剂对于推进空气电池 (ZAB) 的发展至关重要.
贵金属催化剂是昂贵的,而非贵金属替代品在优化双功能方面面临挑战.
氧进化反应 (OER) 和氧减少反应 (ORR) 催化剂是ZAB性能的关键组成部分.

研究的目的:

为了合成和描述ZABs的新型非珍贵的双功能电催化剂.
研究OER和ORR不同活性站点的协同效应.
为了评估ZAB设备中的催化剂的性能和稳定性.

主要方法:

合闪光纳米沉 (FNP) 快速金属有机框架 (MOF) 合成与碳浴方法 (CBM) 催化剂制造.
在添加碳 (Fe-FeOx/NC) 上固定Fe-FeOx纳米颗粒的合成.
在现场表征和理论计算以阐明催化机制.

主要成果:

在性介质中,Fe-FeOx/NC催化剂表现出卓越的双功能电催化性能,电位间隙 (ΔE) 为0.705V.
OER活动归因于氧化物中的Fe位点,而ORR活动源于C-Nx位点.
使用Fe-FeOx/NC催化剂的ZAB实现了高特异容量 (719 mAh·g_Zn^-1) 和卓越的循环稳定性 (>400 h).

结论:

开发的Fe-FeOx/NC催化剂为ZAB提供了一种高性能,具有成本效益的替代品.
不同的活性位点 (氧化铁和C-Nx) 协同促进双功能氧气电催化.
这项工作为设计先进的非贵重氧气电催化剂提供了宝贵的见解.

关键词:

铁 - 铁O (x)MOFs 的使用情况.这是一种双功能催化剂.碳浴方法是碳浴的方法.闪光的纳米沉方式空气电池电池的使用情况

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