青岛科技大学  English 
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教授 博士生导师  
硕士生导师  

教师拼音名称:linjianjian

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入职时间:2018-09-11

所在单位:化学与分子工程学院

学历:博士研究生

办公地点:四方校区第一实验楼216

性别:女

联系方式:19862229511

学位:工学博士

职称:教授

毕业院校:澳大利亚伍伦贡大学

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FeSe/FeSe2 Heterostructure as a Low-Cost and High-Performance Electrocatalyst for Oxygen Evolution Reaction

关键字:ACTIVE FE SITES; WATER; IRON; EFFICIENT; NANOSHEETS; ELECTROLYSIS; SURFACE

摘要:A key consensus of implementing large-scale water splitting is developing highly efficient, durable, and earth-abundant electrocatalysts for oxygen evolution reaction (OER). In recent years, the Fe-based materials used in OER have attracted researchers' great attention around the globe, and Fe has been identified as the OER active sites. In this study, we firstly synthesized the coral-like FeSe/FeSe2 heterostructure catalyst via a one-pot solvothermal method. We demonstrated that different components of FeSe/FeSe2 heterostructure can facilitate the electron transfer process of the system, where a high Fe charge state promotes OER performance, rendering the coral-like FeSe/FeSe2 heterostructure to be more promising Fe-based electrocatalyst for oxygen evolution reaction in alkaline. As expected, the as-prepared FeSe/FeSe2 heterostructure with highly charged iron and negatively charged selenium species exhibited better OER performance and needed only an overpotential of 309 mV to achieve an anodic current density of 10 mA cm(-2). In addition, the catalyst had quick kinetics and good durability in alkaline medium. The present study would open up a potential avenue for the development of highly active non-noble-metal electrocatalysts.

卷号:9

期号:18

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