Advancing Fluoride-Ion Batteries with a Pb-PbF 2 Counter Electrode and a Diluted Liquid Electrolyte.

Autor: Galatolo G; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom., Alshangiti O; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom., Di Mino C; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.; The Faraday Institution, Harwell Campus, Quad One, Becquerel Avenue, Didcot OX11 0RA, United Kingdom., Matthews G; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.; The Faraday Institution, Harwell Campus, Quad One, Becquerel Avenue, Didcot OX11 0RA, United Kingdom., Xiao AW; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom., Rees GJ; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.; The Faraday Institution, Harwell Campus, Quad One, Becquerel Avenue, Didcot OX11 0RA, United Kingdom., Schart M; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom., Chart YA; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.; The Faraday Institution, Harwell Campus, Quad One, Becquerel Avenue, Didcot OX11 0RA, United Kingdom., Olbrich LF; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom., Pasta M; Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.; The Faraday Institution, Harwell Campus, Quad One, Becquerel Avenue, Didcot OX11 0RA, United Kingdom.
Jazyk: angličtina
Zdroj: ACS energy letters [ACS Energy Lett] 2023 Dec 08; Vol. 9 (1), pp. 85-92. Date of Electronic Publication: 2023 Dec 08 (Print Publication: 2024).
DOI: 10.1021/acsenergylett.3c02228
Abstrakt: 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-PbF 2 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 BiF 3 -Pb-PbF 2 cell with the highest capacity retention to date.
Competing Interests: The authors declare no competing financial interest.
(© 2023 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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