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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
Electrospun Porous Perovskite La0.6Sr0.4Co1-xFexO3-delta Nanofibers for Efficient Oxygen Evolution Reaction
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论文类型：期刊论文
发表时间：2017-07-07
发表刊物：ADVANCED MATERIALS INTERFACES
收录刊物：SCIE、Scopus
卷号：4
期号：13
ISSN号：2196-7350
关键字：electrocatalysts; electrospinning; oxygen evolution reaction; perovskites; porous nanofibers
摘要：A series of porous La(0.6)Sr(0.4)Co(1-x)FexO(3-delta) (x = 0- 1) nanofibers with diameters of 54-71 nm are synthesized by electrospinning using appropriate polymers and different processing parameters. When tested as a catalyst for oxygen evolution reaction (OER), an La0.6Sr0.4Co0.6Fe0.4O3-delta (LSCF6464) nanofiber catalyst (with a specific surface area of 24.2 m(2) g(-1)) exhibits a potential (vs Ag/AgCl) of 647 mV at 10 mA cm(disk)(-2), which is much smaller than that of a powder-type commercial LSCF (786 mV) and also smaller than that of the state-of-the-art IrO2 catalysts (660 mV). The LSCF6464 nanofiber catalyst further delivers an outstanding durability, with almost no observable change in potential at a current density of 10 mA cm(disk)(-2) for more than 3 h. In contrast, the performance of an IrO2 catalyst degrades continuously under the same testing conditions. The findings suggest that the LSCF nanofiber is a promising OER electrocatalyst for metal-air batteries and water electrolysis.