Solubility of lithium fluoride in water

Stubblefield, C; Bach, Ricardo O.

doi:10.1021/je60055a017

Cited by 40 publications

(30 citation statements)

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“…While in PC, LiF is not very soluble (s = 0.14 g L −1 ), DMC presents an intermediate value of 0.57 g L −1 . For comparison purposes, we have determined in the same manner the solubility of LiF in water (s = 1.11 g L −1 ) and this value is within close range to the data obtained by Stubblefield and Bach [5] (1.33 g L −1 ). Large differences in solubility are noted between the alkylcarbonates in spite of their structural similarities.…”

Section: Lif Solubilitiessupporting

confidence: 81%

“…At the exception of LiF in water where the solubility has been determined by gravimetry [4] and by ion selective electrode method [4,5], few data are available concerning the solubility of lithium fluoride in dipolar aprotic solvents versus temperature. In particular, to our knowledge, no studies concerning the solubility of LiF in alkylcarbonates and lactones have been yet reported.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic of LiF dissolution in alkylcarbonates and some of their mixtures with water

Jones

Anouti

Caillon-Caravanier

et al. 2009

Fluid Phase Equilibria

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Section: Lif Solubilitiessupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Thermodynamic of LiF dissolution in alkylcarbonates and some of their mixtures with water

Jones

Anouti

Caillon-Caravanier

et al. 2009

Fluid Phase Equilibria

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“…However, as LiF is only slightly soluble in water (1.33 g L -1 at 291 K), [26] and is considered virtually insoluble in organic solvents, [27] the solubility in organic electrolytes has not been consistently reported (although it is known to be higher in DMSO, 0.37 g L -1 , [28] compared to e.g. PC or DEC; see Table S1).…”

Section: Resultsmentioning

confidence: 99%

Controlling Fluoride‐Forming Reactions for Improved Rate Capability in Lithium‐Perfluorinated Gas Conversion Batteries

Gao

Guo

et al. 2019

Advanced Energy Materials

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Nonaqueous metal-gas batteries based on halogenated reactants exhibit strong potential for future high-energy electrochemical systems. The lithium-sulfur hexafluoride (Li-SF 6) primary battery, which utilizes a safe, noncombustible, energy-dense gas as cathode, demonstrates attractive eight-electron transfer reduction during discharge and high attainable capacities (> 3000 mAh/g carbon) at voltages above 2.2 V Li. However, improved rate capability is needed for practical applications. Here, we report two viable strategies to achieve this by targeting the solubility of the passivating discharge product, lithium fluoride (LiF). Operating at moderately elevated temperatures, e.g. 50 °C, in DMSO dramatically improves LiF solubility and promotes sparser and larger LiF nuclei on gas diffusion layer (GDL) electrodes, leading to capacity improvements of ~10x at 120 µA cm-2. More aggressive chemical modification of the electrolyte by including a tris(pentafluorophenyl)borane (TPFPB) anion receptor further promotes LiF solubilization; capacity increased even at room temperature by a factor of 25 at 120 μA cm-2 , with attainable capacities up to 3 mAh cm-2. This work shows that bulk fluoride-forming conversion reactions can be strongly This article is protected by copyright. All rights reserved. 2 manipulated by tuning the electrolyte environment to be solvating towards F-, and that significantly improved rates can be achieved, leading a step closer to application. Received: ((will be filled in by the editorial staff)) Revised: ((will be filled in by the editorial staff)) Published online: ((will be filled in by the editorial staff)) Significant improvement of rate capability of Li-SF 6 cells is achieved by controlling the formation of LiF. Two viable strategies, moderately elevating temperature to 50 °C or using an anion receptor (TPFPB) as additive in electrolyte, can increase attainable capacity by a factor of 10 or 25, respectively, at high current density (120 μA cm-2).

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“…The samples turned to be sensitive to the wet vehicle during the polishing procedure. LiF is slightly soluble in water 46 , while LiYF 4 is insoluble 47 . This can be a convenient tool to generate etched microstructured LiYF 4 surfaces.…”

Section: Selective Etching Of the Minority Lif Phase: Microporous Liymentioning

confidence: 99%

Directional solidification of the eutectic LiF–LiYF4 using Bridgman and micro-pulling down techniques: Microstructural study and some properties

Acosta

Ganschow²,

Klimm³

et al. 2014

Journal of the European Ceramic Society

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The eutectic LiF−LiYF 4 has been solidified by Bridgman and micro-pulling down (mPD) at pulling rates from 4 to 300 mm/h. The microstructure changes from a coupled, interpenetrated-like one to macrofaceted colonies composed of an approximately triangular arrangement of LiF fibers inside the LiYF 4 matrix as the pulling rate increases. The cross-over pulling rate is around 3 times larger for the mPD method, corresponding to its larger solidification gradient. The crystallographic growth direction of the matrix phase was found using EBSD. Effective medium estimations of the THz permittivity of the composite predict around the interphase phonon-polariton resonance (wavelength around 17.5 µm) a small permittivity hyperbolic behavior specific of the ordered composite that is tolerant to different relative orientations. Water etching of polished crosssections constitutes a very simple procedure to generate surface micro-holes of predefined size in the LiYF 4 matrix.

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Solubility of lithium fluoride in water

Cited by 40 publications

References 1 publication

Thermodynamic of LiF dissolution in alkylcarbonates and some of their mixtures with water

Thermodynamic of LiF dissolution in alkylcarbonates and some of their mixtures with water

Controlling Fluoride‐Forming Reactions for Improved Rate Capability in Lithium‐Perfluorinated Gas Conversion Batteries

Directional solidification of the eutectic LiF–LiYF4 using Bridgman and micro-pulling down techniques: Microstructural study and some properties

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