采用快速焙烧结合可控诱导的策略,通过诱导铁基前驱体中的铁物种与碳载体中的氧元素生成配位键,进而达到有效提升二氧化碳还原铁基电催化剂性能的目的。X射线光电子能谱(XPS)等表征结果表明,快速焙烧结合可控诱导的策略可有效诱导Fe—O键的生成,进而有效调控铁基电催化剂的电子性能。性能测试结果表明,在氧配位修饰的铁基电催化剂的作用下,在410 mV (-0.56~-0.97 V)的宽电位范围内,一氧化碳的法拉第效率可持续保持接近100%的高水平。

The strategy that combines fast pyrolysis with controllable induction is adopted to form coordination bonds between iron-based active center in iron based precursor and oxygen element in carbonaceous support,therefore the prepared iron-based electrocatalyst obtains an improved performance of in carbon dioxide electroreduction reaction.It is found through X-ray photoelectron spectroscopy (XPS) and other characterization methods that the strategy can induce effectively to form Fe—O bond,further regulates the electronic properties of the iron-based electrocatalyst.Performance test indicates that under the help of the iron-based electrocatalyst modified by oxygen coordination,Faraday efficiency of carbon dioxide to oxygen can maintain at a high level of nearly 100% in a wide potential range of 410 mV (-0.56 V to -0.97 V).

陈志强(1990-),男,博士,工程师,研究方向为能源催化,chenzq-101@126.com;方涛(1979-),男,博士,研究员,研究方向为航天液体推进剂化学与技术,通讯联系人,fangtao7217@163.com。