N. A. Slesarenko, A. V. Chernyak, I. A. Avilova, V. P. Tarasov, V. I. Volkov, “Mobility of Li+, Na+, and Cs+ cations in Nafion membrane, as studied by NMR techniques”, Mendeleev Commun., 2023, Volume 33, Issue 2,Pages 215

This article is cited in 3 papers

Communications

Mobility of Li⁺, Na⁺, and Cs⁺ cations in Nafion membrane, as studied by NMR techniques

N. A. Slesarenko^a, A. V. Chernyak^ab, I. A. Avilova^a, V. P. Tarasov^a, V. I. Volkov^ab

^a Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
^b Scienific Center in Chernogolovka, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation

Abstract: The local mobility and diffusion of Li⁺, Na⁺, and Cs⁺ cations in Nafion 117 membrane were explored by ⁷Li, ²³Na, and ¹³³Cs spin relaxation and pulsed field gradient NMR techniques. It was shown that the macroscopic mass transfer of cations is controlled by ion motion near sulfonate groups. Lithium and sodium cations, whose hydrated energy is higher than the water hydrogen bond energy, are moving together with water molecules, but cesium cations possessing a low hydrated energy are jumping directly between the neighboring sulfonate groups.

Keywords: Nafion membrane, lithium, sodium, and cesium cations, NMR relaxation times, diffusion, correlation time.

Language: English

DOI: 10.1016/j.mencom.2023.02.021

	*Supplementary materials:*
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