Fluoride Ion Conductive Polymer Electrolytes for All-solid-state Fluoride Shuttle Batteries

Takahashi, Keitaro; Kaneko, Yukari; Abe, Takeshi; Seki, Shiro

doi:10.5796/electrochemistry.20-00062

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Recently, a new fluoride ion-conducting polymer system consisting of poly(ethylene)oxide (PEO), metal fluoride salts, and anion acceptors has been reported. 108 The polymer electrolyte exhibited the ionic conductivity of 1 × 10 6 S cm −1 at 303 K, with fluoride transference numbers as large as 0.8. A FIB utilizing a liquid electrolyte for fluoride transport was reported recently by Ogumi et al, where the electrolyte was made from mixing an organic fluoride (1-methyl-1-propylpiperidinium fluoride: MPPF) in an ionic liquid (N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)amide: TMPA/TFSA).…”

Section: Temperature-dependence Of Fluoride Conducting Materials -A Cmentioning

confidence: 99%

Fluoride ion batteries – past, present, and future

et al. 2021

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Section: Temperature-dependence Of Fluoride Conducting Materials -A Cmentioning

confidence: 99%

Fluoride ion batteries – past, present, and future

et al. 2021

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“…For example, the polymer electrolyte based on the fully aromatic polymer, polysulfone, exhibited a fluoride ion conductivity of 3-5 m S cm −1 at 25 • C [121]. Solid polymer electrolyte systems consisting of a polyethylene oxide-based fluoride-conducting solid polymer, a metal fluoride salt, and an anion acceptor exhibited a fluoride-ion conductivity of 1 × 10 −6 S cm −1 at 303 K [122]. These solid electrolytes have the advantages of flexibility compared with ceramic materials.…”

Section: Nanocrystalsmentioning

confidence: 99%

Challenges for fluoride superionic conductors: fundamentals, design, and applications

Takami

Pattanathummasid

Kutana

et al. 2023

J. Phys.: Condens. Matter

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Electronics, which harnesses the properties of electrons, has made remarkable progress since its inception and is a cornerstone of modern society. Ionics, which exploits the properties of ions, has also had a profound impact, as demonstrated by the award of the Nobel Prize in Chemistry in 2019 for achievements related to lithium-ion batteries (LIBs). Ionic conduction in solids is the flow of carrier ions through a solid owing to an electrical or chemical bias. Some ionic materials have been studied intensively because their ionic conductivities are higher than those of liquids, even though they are solids. Among various conductive species, fluoride ions are the most promising charge carriers for post LIBs. Increasing fluoride-ion conductivity toward the superionic conductive region at room temperature would be a breakthrough for the room-temperature operation of fluoride-ion batteries. This review focuses on fluoride-ion conductors, from the general concept of ions to the characteristics of fluoride ions. Fluoride-ion conductors are classified according to material type and form, and our current understanding, identification of problems, and future directions are discussed from experimental and theoretical physics perspectives.

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“…Liquid electrolytes also show high ionic conductivities as high as crystalline solid electrolytes. [ 7–10 ] Many types of electrolytes are investigated to find the best composition, which has high ionic conductivity, wide stability window range, high capacity, etc. A pair of an electrolyte compound of an organic solvent and a supporting electrolyte salt such as a fluoride compound should be selected by considering the electrochemical reaction in a liquid‐based electrolyte over a wide potential range.…”

Section: Introductionmentioning

confidence: 99%

Study of Behavior of Supporting Electrolyte Ion of Fluoride Shuttle Battery Using Anomalous X‐Ray Scattering

Takabayashi

Kawasaki

Konishi

et al. 2022

Adv Energy and Sustain Res

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Various types of batteries are being developed to extend the limit of capability (i.e., in terms of energy density, charge speed, safety, etc.) of lithium-ion batteries (LIBs). [1][2][3][4] The fluoride shuttle battery (FSB) is a candidate for post-LIBs. [5,6] In the FSB, fluoride ions shuttle between the cathode and the anode. A high theoretical energy density can be achieved by using a simple pair of metals, such as Mg and Bi, as electrodes. The oxidation-reduction reaction of multivalent metal fluorides results in high energy density (MFBoth liquid and solid electrolytes are studied for FSB. [6] Solid electrolytes are superior to liquid electrolytes, especially in the terms of safety. High F À ion conductivities (%10 À4 Scm À1 ) of solid electrolytes are achieved in the cases of single crystals. However, there is a difficulty for practical use of single-crystal electrolytes in terms of size, cost, etc.). Liquid electrolytes also show high ionic conductivities as high as crystalline solid electrolytes. [7][8][9][10] Many types of electrolytes are investigated to find the best composition, which has high ionic conductivity, wide stability window range, high capacity, etc. A pair of an electrolyte compound of an organic solvent and a supporting electrolyte salt such as a fluoride compound should be selected by considering the electrochemical reaction in a liquid-based electrolyte over a wide potential range. Because of the low solubility of fluoride

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Fluoride Ion Conductive Polymer Electrolytes for All-solid-state Fluoride Shuttle Batteries

Cited by 6 publications

References 15 publications

Fluoride ion batteries – past, present, and future

Fluoride ion batteries – past, present, and future

Challenges for fluoride superionic conductors: fundamentals, design, and applications

Study of Behavior of Supporting Electrolyte Ion of Fluoride Shuttle Battery Using Anomalous X‐Ray Scattering

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