和的协同共可使稳定和活跃的RuO2用于酸性水的氧化
Zhihao Pei1, Jiarui Yang1, Jia-Wei Zhao1
1Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China.
Angewandte Chemie (International ed. in English)
|January 16, 2026
概括
开发新的和共二氧化 (Ba/Co-RuO2) 催化剂可增强氧演变反应 (OER) 活性和稳定性,用于质子交换膜水电解 (PEMWE). 这一突破支持成本效益高的生产.
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:
- 质子交换膜水电解 (PEMWE) 需要具有成本效益的非氧演化反应 (OER) 电催化剂来有效生产.
- 基于二氧化 (RuO2) 的催化剂面临着Ru位点不稳定性和晶格氧气损失的挑战,这限制了它们的长期性能.
研究的目的:
- 为PEMWE开发具有酸稳定性和高度活性的非OER电催化剂.
- 调查和联合兴奋剂对RuO2催化剂性能和稳定性的影响.
主要方法:
- 合成和联合合的RuO2 (Ba/Co-RuO2) 催化剂.
- 电化学表征包括OER活性和耐久性测试在酸性介质 (0.5M H2SO4) 中.
- 在质子交换膜电解电池中的性能评估.
- 在现场/外现场表征和计算分析以了解兴奋剂效应.
主要成果:
- Ba/Co-RuO2催化剂的低OER超电位为166mV,在10mA cm-2下维持运行超过1500小时,衰变微不足道.
- 催化剂在PEMWE电池中表现出色,在1.87V时达到3Acm-2,在800mAcm-2时维持超过300小时的耐用性.
- 协同兴奋剂诱导了晶格应变和电子再分配,稳定了催化剂结构并优化了氧中间体吸附/脱附.
结论:
- 和共是一种有效的策略,用于提高PEMWE基于RuO2的OER电催化剂的活性和长期稳定性.
- 开发的Ba/Co-RuO2催化剂为高效和持久的生产提供了对基催化剂的有希望的替代品.
- 了解结构属性关系为设计下一代水电解电催化剂提供了洞察力.
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