Insights into Electrochemical Sodium Metal Deposition as Probed with in Situ (23)Na NMR

Journal of the American Chemical Society
Paul M BayleyC P Grey

Abstract

Sodium batteries have seen a resurgence of interest from researchers in recent years, owing to numerous favorable properties including cost and abundance. Here we examine the feasibility of studying this battery chemistry with in situ NMR, focusing on Na metal anodes. Quantification of the NMR signal indicates that Na metal deposits with a morphology associated with an extremely high surface area, the deposits continually accumulating, even in the case of galvanostatic cycling. Two regimes for the electrochemical cycling of Na metal are apparent that have implications for the use of Na anodes: at low currents, the Na deposits are partially removed on reversing the current, while at high currents, there is essentially no removal of the deposits in the initial stages. At longer times, high currents show a significantly greater accumulation of deposits during cycling, again indicating a much lower efficiency of removal of these structures when the current is reversed.

References

Nov 20, 2001·Nature·J M Tarascon, M Armand
Feb 14, 2012·Nature Materials·S ChandrashekarAlexej Jerschow
Mar 3, 2012·Solid State Nuclear Magnetic Resonance·Nicole M TreaseClare P Grey
Mar 14, 2012·Angewandte Chemie·Oc Hee HanHeung Yong Ha
Nov 28, 2013·Journal of the American Chemical Society·Hao WangClare P Grey
Nov 13, 2014·Chemical Reviews·Naoaki YabuuchiShinichi Komaba
Nov 3, 2015·Journal of the American Chemical Society·Hee Jung ChangClare P Grey

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Citations

Jul 10, 2019·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Alexandre Ponrouch, M Rosa Palacín
Jan 9, 2018·Chemical Society Reviews·Alok M TripathiBing Joe Hwang
Sep 16, 2016·Advanced Materials·Leigang XueJohn B Goodenough
Mar 2, 2021·Journal of the American Chemical Society·Ping WangFei-Fei Cao
Jun 20, 2018·Journal of the American Chemical Society·Lauren E MarbellaClare P Grey
Apr 5, 2019·Chemical Reviews·Byeongyong LeeSeung Woo Lee

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