Issue 12, 2024

Robust battery interphases from dilute fluorinated cations

Abstract

Controlling solid electrolyte interphase (SEI) in batteries is crucial for their efficient cycling. Herein, we demonstrate an approach to enable robust battery performance that does not rely on high fractions of fluorinated species in electrolytes, thus substantially decreasing the environmental footprint and cost of high-energy batteries. In this approach, we use very low fractions of readily reducible fluorinated cations in electrolyte (∼0.1 wt%) and employ electrostatic attraction to generate a substantial population of these cations at the anode surface. As a result, we can form a robust fluorine-rich SEI that allows for dendrite-free deposition of dense Li and stable cycling of Li-metal full cells with high-voltage cathodes. Our approach represents a general strategy for delivering desired chemical species to battery anodes through electrostatic attraction while using minute amounts of additive.

Graphical abstract: Robust battery interphases from dilute fluorinated cations

Supplementary files

Article information

Article type
Paper
Submitted
18 Jan 2024
Accepted
24 Apr 2024
First published
02 May 2024
This article is Open Access
Creative Commons BY-NC license

Energy Environ. Sci., 2024,17, 4137-4146

Robust battery interphases from dilute fluorinated cations

C. N. Hong, M. Yan, O. Borodin, T. P. Pollard, L. Wu, M. Reiter, D. G. Vazquez, K. Trapp, J. M. Yoo, N. Shpigel, J. I. Feldblyum and M. R. Lukatskaya, Energy Environ. Sci., 2024, 17, 4137 DOI: 10.1039/D4EE00296B

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