摘要
电解水制氢催化剂在特定的强酸/碱、强氧化/还原运行环境中面临高活性与高稳定性的要求。高熵合金具有良好的导电与导热性、化学稳定性、电子协同效应,是研究电解水催化剂的优选材料。对高熵合金的定义、能带结构、制备方法、结构分类进行了总结。结合析氧/析氢催化活性,对高熵合金的结构特性进行了分析。基于析氧/析氢反应机制与第一性原理,对高熵催化剂的反应动力学特性与稳定性进行了研究。大量研究结果表明:高熵合金催化剂以灵活多变的能带结构,在降低中间产物的反应自由能、提高反应的稳定性方面相较传统的金属间化合物具有独特的优势。对高熵合金催化剂技术的应用发展与挑战进行了展望。
The catalyst for water electrolysis for hydrogen generation is necessarily required to have high activity and stability in typical operating environments of strong acid/alkali and strong oxidation/reduction.The high-entropy alloy(HEA)material is the preferred materials for researching electrolytic water catalysts because of the advantages of good electronic and thermal conductivity,chemical stability and electronic synergy effect.The HEA characteristics were summarized from the definition,energy band,preparation method and structure classification.The HEA structure properties were discussed by combining the HER/OER performance.The behavior kinetics and electrochemistry stability of the HEA catalyst were analyzed based on the OER/HER reaction mechanism and the first principle.According to enormous amount of research findings,the HEA catalysts with flexible and versatile band structure have unique advantages in reducing the reaction free energy of intermediate products and improving reaction stability compared to traditional intermetallic compounds.The application development and challenges of the high-entropy alloy catalyst technology were prospected.
作者
姜广
吴亮
JIANG Guang;WU Liang(Shanghai Bright-H Technology Co.,Ltd.,Shanghai 200245,China)
出处
《电源技术》
北大核心
2025年第6期1126-1134,共9页
Chinese Journal of Power Sources
基金
上海市国资委企业创新发展和能级提升项目(2023003)。
关键词
高熵合金
电解水制氢
催化剂
协同效应
high-entropy alloy
water electrolysis for hydrogen generation
catalyst
synergy effect
作者简介
姜广(1994-),男,山西省人,博士,主要研究方向为电解水制氢。
