Fully Fluorinated Local High Concentration Electrolytes Enabling High Energy Density Si Anodes

Marschilok, Amy C.; Takeuchi, Esther S.; Takeuchi, Kenneth J.

doi:10.2172/2479872

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DOE OSTI · 2479872

Fully Fluorinated Local High Concentration Electrolytes Enabling High Energy Density Si Anodes

Marschilok, Amy C.·Takeuchi, Esther S.·Takeuchi, Kenneth J.

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Abstract

To develop fluorinated localized high concentration electrolytes as a novel approach for constructing a functional SEI on Si based anodes. The technological approach combines the SEI modification strategies of fluorinated carbonate solvents and local high concentration electrolytes. The resulting synergy of anion and fluorinated solvent decomposition will form a mechanically robust, fluorinated SEI that enables extended cycling with high capacity retention. The electrolytes will enable demonstration of silicon-graphite anodes with high Si content, paired with NMC811 cathodes. Characterization will focus on galvanostatic cycling to evaluate electrochemical performance.

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Marschilok, Amy C., Takeuchi, Esther S., Takeuchi, Kenneth J.. 2024-10-28. Fully Fluorinated Local High Concentration Electrolytes Enabling High Energy Density Si Anodes. https://doi.org/10.2172/2479872

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