Low pressure carbon dioxide solubility in pure electrolyte solvents for lithium-ion batteries as a function of temperature. Measurement and prediction

Anouti, Mérièm; Dougassa, Yvon Rodrigue; Tessier, Cécile; Ouatani, Loubna El; Jacquemin, Johan

doi:10.1016/j.jct.2012.01.027

Cited by 50 publications

(37 citation statements)

References 45 publications

(104 reference statements)

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“…In contrast to the lower C‐rates, where CO 2 and O 2 are the best, we can also see at 3C and 5C that CO (13 or 35 %) and H 2 (12 or 25 %) have improved C‐rate capabilities. Notably, the gases, even if they have only a modest solubility (Ar<0.1 %; CO 2 ≈1.1 %; C 2 H 4 ≈1.1 %; H 2 <0.1 %; CH 4 ≈0.2 %),[ 52 , 53 , 54 , 55 ] exhibit substantial influence on the electrochemical properties as well as overall battery performance. Even Ar and H 2 with their poor solubility show differences at 3C to 5C.…”

Section: Resultsmentioning

confidence: 99%

The Effects of Gas Saturation of Electrolytes on the Performance and Durability of Lithium‐Ion Batteries

et al. 2021

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Traces of species in batteries are known to impact battery performance. The effects of gas species, although often reported in the electrolyte and evolving during operation, have not been systematically studied to date and are therefore barely understood. This study reveals and compares the effects of different gases on the charge-discharge characteristics, cycling stability and impedances of lithium-ion batteries. All investigated gases have been previously reported in lithium-ion batteries and are thus worth investigating: Ar, CO 2 , CO, C 2 H 4 , C 2 H 2 , H 2 , CH 4 and O 2 . Gas-electrolyte composition has a significant influence on formation, coulombic and energy efficiencies, C-rate capability, and aging. Particularly, CO 2 and O 2 showed a higher C-rate capability and a decrease in irreversible capacity loss during the first cycle compared to Ar. Similar discharge capacities and aging behaviors are observed for CO, C 2 H 4 and CH 4 . Acetylene showed a large decrease in performance and cycle stability. Furthermore, electrochemical impedance spectroscopy revealed that the gases mainly contribute to changes in charge transfer processes, whereas the effects on resistance and solid electrolyte interphase performance were minor. Compared to all other gas-electrolyte mixtures, the use of CO 2 saturated electrolyte showed a remarkable increase in all performance parameters including lifetime.

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Section: Resultsmentioning

confidence: 99%

The Effects of Gas Saturation of Electrolytes on the Performance and Durability of Lithium‐Ion Batteries

et al. 2021

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“…S6 and S7, which show little evidence for LiF or CH 3 Li in the SEI layer on the macroscopic level with the addition of 5 weight % (wt %) carbon dioxide. Carbon dioxide is an effective additive for use in Li-ion batteries (26), but solubility in common organic solvents is limited to~0.5 wt % and strongly dependent on temperature (27). Conversely, carbon dioxide and fluoromethane are miscible solvents (28) and may enable the use of this highly effective additive in next-generation batteries.…”

Section: Rechargeable LI Metal Batterymentioning

confidence: 99%

Liquefied gas electrolytes for electrochemical energy storage devices

Rustomji

Yang

Kim

et al. 2017

Science

306

257

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Electrochemical capacitors and lithium-ion batteries have seen little change in their electrolyte chemistry since their commercialization, which has limited improvements in device performance. Combining superior physical and chemical properties and a high dielectric-fluidity factor, the use of electrolytes based on solvent systems that exclusively use components that are typically gaseous under standard conditions show a wide potential window of stability and excellent performance over an extended temperature range. Electrochemical capacitors using difluoromethane show outstanding performance from -78° to +65°C, with an increased operation voltage. The use of fluoromethane shows a high coulombic efficiency of ~97% for cycling lithium metal anodes, together with good cyclability of a 4-volt lithium cobalt oxide cathode and operation as low as -60°C, with excellent capacity retention.

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“…The COSMO surface (Å 2 ) and volume (Å 3 ) as well as the sigma surface of each species was then determined and viewed using the COSMOthermX software, which is based on the COSMO-RS (COnductor-like Screening MOdel) computation technique. The combination of TmoleX and COSMOthermX software (version C30 16.02) was then used to understand the differences in structure, charge distribution and volume of the two salts investigated during this study and to understand their interactions in solution by following the methodology previously described by our group [38][39][40].…”

Section: Predictive Methodsmentioning

confidence: 99%

Effect of mixed anions on the transport properties and performance of an ionic liquid-based electrolyte for lithium-ion batteries

Chaudoy

Jacquemin

Tran‐Van

et al. 2019

Pure and Applied Chemistry

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In this work, the physical, transport and electrochemical properties of various electrolytic solutions containing the 1-propyl-1-methylpyrrolidinium bis[fluorosulfonyl]imide ([C3C1pyr][FSI]) mixed with the lithium bis[(trifluoromethyl)sulfonyl]imide (Li[TFSI]) over a wide range of compositions are reported as a function of temperature at atmospheric pressure. First, the ionicity, lithium transference number, and transport properties (viscosity and conductivity) as well as the volumetric properties (density and molar volume) were determined as a function of lithium salt concentration from 293 to 343 K. Second, the self-diffusion coefficient of each ion in solution was measured by nuclear magnetic resonance (NMR) spectroscopy with pulsed field gradients (PFG). Moreover, an analysis of the collected nuclear Overhauser effect (NOE) data along with ab initio and COSMO-RS calculations was conducted to depict intra and intermolecular neighbouring within the electrolytic mixtures. Based on this analysis, and as expected, all activation energies increase with the Li[TFSI] concentration in solution, and all activation energies were determined from the self-diffusion data for all ions. Interestingly, regardless of the composition in solution, these activation energies were similar, except for those determined for the [FSI]− anion. The activation energy of [FSI]− self-diffusion relatively decreases compared to the other ions as the lithium salt concentration increases. Furthermore, the lithium transference was strongly affected by the lithium salt concentration, reaching an optimal value and an ionicity of approximately 50 % at a molality close to 0.75 mol · kg−1. Finally, these electrolytes were used in lithium-ion batteries (i.e. Li/NMC and LTO/NMC), demonstrating a clear relationship between the electrolyte formulation, its transport parameters and battery performance.

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Low pressure carbon dioxide solubility in pure electrolyte solvents for lithium-ion batteries as a function of temperature. Measurement and prediction

Cited by 50 publications

References 45 publications

The Effects of Gas Saturation of Electrolytes on the Performance and Durability of Lithium‐Ion Batteries

The Effects of Gas Saturation of Electrolytes on the Performance and Durability of Lithium‐Ion Batteries

Liquefied gas electrolytes for electrochemical energy storage devices

Effect of mixed anions on the transport properties and performance of an ionic liquid-based electrolyte for lithium-ion batteries

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