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DOI	10.1039/c6ee03132c
	A bifunctional solid state catalyst with enhanced cycling stability for Na and Li-O2 cells: Revealing the role of solid state catalysts
	Yadegari H.; Norouzi Banis M.; Lushington A.; Sun Q.; Li R.; Sham T.-K.; Sun X.
发表日期	2017
ISSN	17545692
起始页码	286
结束页码	295
卷号	10 期号:1
英文摘要	Solid state catalysts play a critical role in peroxide alkali metal-O2 cells. However, the underlying mechanism behind the catalytic activity remains controversial due to the different nature of oxygen reduction and evolutions reactions (ORR, OER) in non-aqueous cells compared to those in classic aqueous based reactions. In the present study, we reveal a detailed spectroscopic and electrochemical picture of the mechanism of catalytic activity in Na- and Li-O2 cells. We demonstrate that ORR and OER catalytic activity in alkali metal-O2 cells primarily originates from the stabilization of O2 - intermediates on the catalyst surface during the electrochemical reaction. Monitoring the electronic state of the solid state catalyst during the ORR and OER revealed a dynamic interaction occurring between the catalyst and the discharge product. The morphology and composition of discharge products is also illustrated to be influenced by solid state catalysts. The findings of the present study suggest that catalysts with a higher oxygen-bonding capability may exhibit a higher catalytic activity in alkali metal-O2 cells. © The Royal Society of Chemistry 2017.
英文关键词	Cells; Cytology; Electric discharges; Electrolytic reduction; Electronic states; Lithium compounds; Oxygen; Reaction intermediates; Sodium; Surface reactions; Bi-functional; Catalyst surfaces; Cycling stability; Dynamic interaction; Electrochemical reactions; Morphology and composition; Oxygen bonding; Oxygen reduction and evolution; Catalyst activity; alkali metal; aqueous solution; catalyst; electrochemistry; fuel cell; oxygen; reduction; stabilization
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190587
作者单位	Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON N6A 5B9, Canada; Canadian Light Source, Saskatoon, S7N 2V3, Canada; Department of Chemistry, University of Western Ontario, London, ON N6A 5B7, Canada
推荐引用方式 GB/T 7714	Yadegari H.,Norouzi Banis M.,Lushington A.,et al. A bifunctional solid state catalyst with enhanced cycling stability for Na and Li-O2 cells: Revealing the role of solid state catalysts[J],2017,10(1).
APA	Yadegari H..,Norouzi Banis M..,Lushington A..,Sun Q..,Li R..,...&Sun X..(2017).A bifunctional solid state catalyst with enhanced cycling stability for Na and Li-O2 cells: Revealing the role of solid state catalysts.Energy & Environmental Science,10(1).
MLA	Yadegari H.,et al."A bifunctional solid state catalyst with enhanced cycling stability for Na and Li-O2 cells: Revealing the role of solid state catalysts".Energy & Environmental Science 10.1(2017).