期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 903, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.163853
关键词
Palladium; Hydrogen sorption; Ionic liquids; Hydrogen absorption isotherm; Non-aqueous electrolytes; Ionic liquids 1 H NMR
资金
- Faculty of Chemistry, University of Warsaw
The mixtures of selected protic and aprotic ionic liquids with their parent superacids were used as electrolytes for hydrogen electrosorption in thin Pd films. The properties of these mixtures were characterized using electrochemical and physicochemical methods, demonstrating their potential use as electrolytes in hydride/protonic systems.
The mixtures of selected protic and aprotic ionic liquids with their parent superacids were used as electrolytes in the process of hydrogen electrosorption in thin (ca. 0.5 mu m) Pd films. The properties of ionic liquids and their mixtures with superacids were characterized with the use of electrochemical and physicochemical methods to show the perspectives of their potential utilization as electrolytes in hydride/ protonic systems. Based on the electrochemical studies it was possible to estimate the minimum concentrations of the superacids in protic and aprotic ionic liquids which give maximum hydrogen absorption capacities in Pd (H/Pd). Unusual, previously unnoticed 'two-step' alpha ->beta phase transition was observed on the hydrogen electrosorption isotherm of Pd for the process of hydrogen absorption from the protic ionic liquids for some superacid concentrations. 1H NMR spectroscopy of the protic ionic liquids enables to discuss the relation between proton mobility and hydrogen electrosorption properties. (c) 2022 The Author(s). Published by Elsevier B.V. CC_BY_4.0
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