期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 826, 期 -, 页码 217-224出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.08.034
关键词
PdSn; Multi-walled carbon nanotubes; Heat-treatment; Oxygen reduction reaction; Cathodic electrocatalyst; Mg-air battery
资金
- Science and Technology Program of Beijing Municipal Education Commission [SQKM201810005007]
- Fundamental Research Fund of Beijing University of Technology [105000546317501]
- National Key Research and Development Program [2016YFB0301101-1]
Utilized as an oxygen reduction reaction (ORR) catalyst for magnesium-air battery, multi-walled carbon nanotubes (MWCNTs) supported PdSn bimetallic catalyst was synthesized by a facile borohydride reduction method. Heat-treatment was applied to improve the catalytic activity and stability by tailoring the alloying content and surface components of the catalyst. Results illustrated that the 24 h heat-treated PdSn/MWCNTs exhibited best alkaline ORR performance with low over-potential, high diffusion-limited current density and superior stability. A magnesium-air battery employing the 24 h heat-treated PdSn/MWCNTs as cathodic catalyst showed higher discharging power density and enhanced durability compared with those employing the unheated sample and commercial Pd/C catalyst.
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