稀土铈在电催化水分解中的应用研究进展

Application of rare earth cerium element in electrocatalytic water splitting

氢气(H_2)热值高、无污染,可以有效缓解日益严重的能源和环境危机;高效的电解水催化材料可以极大地降低水分解成氢气和氧气的过电位,提升水的分解效率。稀土元素铈(Ce)具有较强的氧化还原能力,将Ce引入电解水催化材料中可大幅提高电催化材料的催化效率,目前该类材料已经得到了国内外学者的广泛关注。文中主要介绍了Ce在纳米颗粒修饰、骨架、氢氧化物以及金属有机框架等方面构筑电催化材料,归纳了国内外含Ce催化材料在析氢反应与析氧反应中电催化性能和机理的研究进展,针对Ce或其他稀土元素在电催化材料中的应用进行了展望。

Hydrogen(H2)has a high calorific value with no pollution,which can effectively alleviate the increasingly serious energy and environmental crisis;efficient electrolytic water catalytic materials can greatly reduce the overpotential of water splitting into hydrogen and oxygen,and improve the efficiency of water splitting.Rare earth element cerium(Ce)has such excellent redox ability that adding it into electrolytic water catalytic materials can greatly improve the catalytic efficiency of electrocatalytic materials.At present,this kind of materials have been widely concerned by scholars at home and abroad.This article mainly introduces how Ce constructs electrocatalytic materials in nanoparticle modification,skeleton,hydroxide,metal organic framework and some other fields,and then summarizes the research progress of electrocatalytic performance and mechanism of Ce-containing catalytic materials in hydrogen evolution reaction and oxygen evolution reaction at home and abroad.Finally,it discusses where Ce or other rare earth elements applied in electrocatalytic materials go in the future.