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进行氧工程的Co-Cu-Zr矿,用于耐久的离子交换膜电解

Logeshwaran Natarajan¹, Ta Thi Thuy Nga², Minjae Kwon¹

¹Carbon Composite Materials Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea.

Small (Weinheim an der Bergstrasse, Germany)

|October 14, 2025

概括

一种新的矿催化剂Ba(ZrxCu<0xE1><0xB5><0xA7>Co1−x−<0xB5><0xA7>) O3−<0xE2><0x82><0x91> (BZCC),提高了水电解和空气电池的氧演变反应 (OER) 效率. 这种催化剂在性介质中提供高活性和稳定性.

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
催化剂是一种催化剂.

背景情况:

氧化演化反应 (OER) 对于水电解和能量储存至关重要,但受到催化剂性能的限制.
开发具有高活性和长期稳定的电催化剂对于高效的OER至关重要.

研究的目的:

为了合成和描述一种新的混合金属矿,Ba(ZrxCu<0xE1><0xB5><0xA7>Co1−x−<0xE1><0xB5><0xA7>) O3−<0xE2><0x82><0x91> (BZCC),用于高效的OER在性介质中.
研究BZCC的催化机制和结构性质,以提高OER性能.

主要方法:

低温水热合成BZCC矿. 在低温水热合成.
对BZCC的OER活性和耐久性的电化学表征.
在单细胞离子交换膜水电解器 (AEMWE) 中应用BZCC.

主要成果:

在BZCC中,通过Co-氧化还原灵活性表现出吸附物演化机制 (AEM) 和晶格氧化氧化机制 (LOM) 的双重激活.
加入Cu增强了固有的活性,而Zr确保了对抗性腐蚀的结构稳定性.
BZCC显示了238mV的低超电位在10mA cm-2时,在200小时内降解最小.
在AEMWE中,BZCC阳极在2.07V时达到1.0Acm-2并保持25小时的稳定运行.

结论:

BZCC是OER的高度活跃和稳定的电催化剂,由其独特的氧化还原灵活性,电子调制和结构完整性的组合驱动.
这些发现将BZCC定位为可扩展和可持续的离子交换膜水电解器的有希望的候选者.

关键词:

吸附剂进化机制的演变机制晶格氧氧化机制的氧化机制氧气进化反应反应氧气进化反应矿电催化剂的电催化剂

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