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在空气电池中增强氧气减少动力学的超性核心外催化剂

Shijian Huang^1,2, Yi Gao³, Ting Chen^1,2

¹College of Materials and Chemical Engineering, College of Mechanical and Power Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, China.

Small (Weinheim an der Bergstrasse, Germany)

|August 22, 2025

概括

这项研究引入了一种具有核心外结构和超性的新型H─CoFe─CNT催化剂,用于增强空气电池 (ZAB). 这项创新大大提高了ZAB的功率密度和耐用性.

科学领域:

材料科学
电化学
能量储存

背景情况:

空气电池 (ZAB) 由于其三相反应系统,面临着缓慢的反应动力学和低功率输出方面的挑战.
这些性能限制阻碍了ZAB的商业化.

研究的目的:

开发一种用于提高空气电池性能的先进催化剂.
解决ZAB中缓慢运动和低功率密度的局限性.

主要方法:

使用碳纳米管培养的空心立方碳与金属碳化物@金属核心结构的新型H─CoFe─CNT催化剂的制造.
将超性质整合到催化剂设计中.
氧降解反应 (ORR) 和氧演化反应 (OER) 的电催化评估.
液态和准固态ZAB的组装和测试.

主要成果:

H─CoFe─CNT催化剂表现出优异的ORR活动 (0.909V半波潜力) 和OER活动 (307mV超电位).
液体ZAB实现了255 mW cm-2的峰值功率密度,具有显著的耐用性.
准固态ZAB的极高峰值功率密度为610 mW cm-2.

结论:

核心外异相催化物和超疏水工程的协同整合是高功率密度ZAB的一个有希望的策略.
开发的催化剂显著提高了空气电池的性能和实用性.

关键词:

双功能电催化剂核心-外异相防水性氧降解运动空气电池

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