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- Title
Hierarchical Layered Double Hydroxide Microspheres with Largely Enhanced Performance for Ethanol Electrooxidation.
- Authors
Shao, Mingfei; Ning, Fanyu; Zhao, Jingwen; Wei, Min; Evans, David G.; Duan, Xue
- Abstract
Hierarchical MgFe-layered double hydroxide (LDH) microspheres with tunable interior structure are synthesized by a facile and cost-effective surfactant-templated method. Scanning and transmission electron microscopy images reveal that the obtained microspheres display a three-dimensional architecture with hollow, yolk−shell and solid interior structure, respectively, with continuous changes in specific surface area and pore-size distribution. Moreover, the hollow MgFe-LDH microspheres exhibit excellent electrocatalytic oxidation of ethanol in alkaline fuel cell, including high activity, long-term durability and cycling stability, owing to the significantly improved faradaic redox reaction and mass transport. Therefore, this work provides a promising approach for the design and synthesis of structure tunable materials with largely enhanced ethanol electrooxidation behavior, which can be potentially used in noble metal-free alkaline fuel cells.
- Subjects
MICROSPHERES; HYDROXIDES; CLATHRATE compounds; ELECTRON microscopy; ETHANOL; ALKALINE fuel cells; RENEWABLE energy sources
- Publication
Advanced Functional Materials, 2013, Vol 23, Issue 28, p3513
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201202825