Interaction of electrolyte molecules with the surface of porous carbon: NMR study
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Published:2024-03-27
Issue:1
Volume:25
Page:212-216
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ISSN:2309-8589
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Container-title:Physics and Chemistry of Solid State
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language:
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Short-container-title:Phys. Chem. Sol. State
Author:
Budzuliak I.M.,Yablon L.S.,Kotsyubynsky V.O.,Rachii B.I.,Budzuliak I.I.,Boychuk V.M.,Ilnytskyi R.V.,Kryvulych R.I.
Abstract
Electrochemical double-layer capacitors use porous carbons as the electrode material, and improving their performance requires an understanding of the electrolyte−carbon surface interactions. 13C, 14N, and 11B NMR spectroscopy were used to investigate the behaviour of the electrolytes [C(OCH3)3NH3]+Cl- and [N(CH2CH3)]+BF4- on the surface of porous carbon in D2O solutions. A chemical shift of 13C has been found in the fragments N–C, indicating electron density redistribution between nitrogen atoms and alkyl fragments. The presence of a signal with a chemical shift of d = 7.7 confirms the structuring of the electrolytic layer of water solution [N(CH2CH3)]+BF4-.
Publisher
Vasyl Stefanyk Precarpathian National University