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Advancing Fluoride-Ion Batteries with a Pb-PbF2 Counter Electrode and a Diluted Liquid Electrolyte AITranslate

Giulia Galatolo; Omar Alshangiti; Camilla Di Mino; Guillaume Matthews; Albert W. Xiao; Gregory J. Rees; Maximilian Schart; Yvonne A. Chart; Lorenz F. Olbrich; Mauro Pasta;
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Abstract AITranslate

Fluoride ion batteries (FIB) are a promising post lithium-ion technology thanks to their high theoretical energy densities and Earth-abundant materials. However, the flooded cells commonly used to test liquid electrolyte FIBs severely affect the overall performance and impede comparability across different studies, hindering FIB progress. Here, we report a reliable Pb-PbF2 counter electrode that enables the use of two-electrode coin cells. To test this setup, we first introduce a liquid electrolyte that combines the advantages of a highly concentrated electrolyte (tetramethylammonium fluoride in methanol) while addressing its transport and high-cost shortcomings by introducing a diluent (propionitrile). We then demonstrate the viability of this system by reporting a BiF3–Pb-PbF2 cell with the highest capacity retention to date.

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DOI：https://doi.org/10.1021/acsenergylett.3c02228

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Fluoride ion batteries (FIB) are a promising post lithium-ion technology thanks to their high theoretical energy densities and Earth-abundant materials. However, the flooded cells commonly used to test liquid electrolyte FIBs severely affect the overall performance and impede comparability across different studies, hindering FIB progress. Here, we report a reliable Pb-PbF2 counter electrode that enables the use of two-electrode coin cells. To test this setup, we first introduce a liquid electrolyte that combines the advantages of a highly concentrated electrolyte (tetramethylammonium fluoride in methanol) while addressing its transport and high-cost shortcomings by introducing a diluent (propionitrile). We then demonstrate the viability of this system by reporting a BiF3–Pb-PbF2 cell with the highest capacity retention to date.

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GB/T 7714-2015 [1] Giulia Galatolo, Omar Alshangiti, Camilla Di Mino, et al. ACS Energy Letters, 2024(9). DOI:10.1021/acsenergylett.3c02228.
MLA [1] Giulia Galatolo, et al., ACS Energy Letters, no. 9, 2024, https://doi.org/10.1021/acsenergylett.3c02228.
APA [1] Giulia Galatolo, Omar Alshangiti, Camilla Di Mino, Guillaume Matthews, Albert W. Xiao, Gregory J. Rees, Maximilian Schart, Yvonne A. Chart, Lorenz F. Olbrich, & Mauro Pasta. (2024). ACS Energy Letters(9). https://doi.org/10.1021/acsenergylett.3c02228
IEEE [1] Giulia Galatolo, Omar Alshangiti, Camilla Di Mino, Guillaume Matthews, Albert W. Xiao, Gregory J. Rees, Maximilian Schart, Yvonne A. Chart, Lorenz F. Olbrich, and Mauro Pasta, ACS Energy Letters, no. 9, 2024, doi: 10.1021/acsenergylett.3c02228.