basile-extensivesodium-2017.pdf (5.06 MB)
Extensive sodium metal plating and stripping in a highly concentrated inorganic-organic ionic liquid electrolyte through surface pretreatment
journal contribution
posted on 2017-05-01, 00:00 authored by A Basile, F Makhlooghiazad, Ruhamah Yunis, D R Macfarlane, Maria ForsythMaria Forsyth, Patrick HowlettPatrick HowlettIn the present work, the stable and extensive cycling of Na plating and stripping is demonstrated within an inorganic-organic ionic liquid electrolyte. The electrolyte is composed of liquid-state tri(isobutyl)methylphosphonium bis(fluorosulfonyl)imide when employing a high 45mol% Na concentration in the form of sodium bis(fluorosulfonyl)imide. The liquid-state electrolyte supports safe Na metal electrochemistry at 50°C and exhibits a conductivity of 10-2.5Scm-1. Through plating/stripping with 1h polarization times (12 cycles, J=0.5mAcm-2), a surface is prepared with a smooth surface devoid of dendrites and, importantly, a stable solid-electrolyte interphase, determined by using scanning electron microscopy and impedance spectroscopy. After this, a greater mass transfer can be undertaken through an increased polarization time of 5h (Q=2.5mAhcm-2) for a duration of 120h.
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Journal
ChemElectroChemVolume
4Issue
5Pagination
986 - 991Publisher
Wiley-VCHLocation
Chichester, Eng.Publisher DOI
eISSN
2196-0216Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2017, Wiley-VCHUsage metrics
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