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

Technical Report · Mon Oct 28 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2479872· OSTI ID:2479872

Marschilok, Amy C. ^[1]; Takeuchi, Esther S. ^[1]; Takeuchi, Kenneth J. ^[1]

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1. Stony Brook Univ., NY (United States)

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.

• Research Organization: The Research Foundation for the SUNY Stony Brook University
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: EE0009184
• OSTI ID: 2479872
• Report Number(s): DOE-RFSBU--0009184
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY