Category: 143-24-8

Li, Jiade published the artcileEffect of O2 adsorption on the termination of Li-O2 batteries discharge, COA of Formula: C10H22O5, the main research area is oxygen adsorption termination lithium batteries discharge.

Li-O (Li-O2) batteries can exhibit high theor. energy d. and be surely suitable for potential energy storage. However, they suffer from early discharge termination and consequently low practical capacity, which was regarded as the blockage of the diffusion of O and the electron transfer on cathode surface. Herein, based on exptl. results and theor. simulation, the discharge termination is largely caused by the surface adsorption of O and the corresponding reaction intermediates. A TiO2-coated binder-free C paper was prepared and used as cathode for Li-O2 battery. During the 1st discharge, the discharge plateau at ∼2.55 V was not observed due to the weak adsorption of O on TiO2 surface, indicative of an early discharge termination of Li-O2 battery. It is further identified that the formed vacancies on TiO2 surface during lithiation/delithiation prevents the early discharge termination. Therefore, the interaction between O and electrode surface plays a key role in discharge termination mechanism of Li-O2 batteries.

Electrochimica Acta published new progress about Battery cathodes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, COA of Formula: C10H22O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Plunkett, Samuel T. published the artcileA New Cathode Material for a Li-O2 Battery Based on Lithium Superoxide, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium oxygen battery cathode lithium superoxide.

Li-O2 batteries suffer from large charge overpotentials due to the high charge transfer resistance of Li2O2 discharge products. A potential solution to this problem is the development of LiO2-based batteries that possess low charge overpotentials due to the lower charge transfer resistance of LiO2. In this report, IrLi nanoparticles were synthesized and implemented for the first time as a LiO2 battery cathode material. The IrLi nanoparticle synthesis was achieved by a temperature- and time-optimized thermal reaction between a precise ratio of iridium nanoparticles and lithium metal. Li-O2 batteries employing the IrLi-rGO cathodes were cycled up to 100 cycles at moderate current densities with sustained low cell charge potentials (<3.5 V). Various characterization techniques, including SEM, DEMS, TEM, Raman, and titration, were used to demonstrate the LiO2 discharge product and the absence of Li2O2. On the basis of first-principles calculations, it was concluded that the formation of crystalline LiO2 can be stabilized by epitaxial growth on the (111) facets of IrLi nanoparticles present on the cathode surface. These findings demonstrate that, in addition to the previously studied Ir3Li intermetallic, the IrLi intermetallic also provides a means by which LiO2 discharge products can be stabilized and confirms the importance of templating for the formation process. ACS Energy Letters published new progress about Battery cathodes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Di Pietro, Sebastiano published the artcileRemarkable effect of [Li(G4)]TFSI solvate ionic liquid (SIL) on the regio- and stereoselective ring opening of α-gluco carbasugar 1,2-epoxides, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is [Li(G3)]TFSI; [Li(G4)]TFSI; carbasugars; solvate ionic liquids (SILs); α-gluco 1,2-epoxide.

Carba analogs of biol. relevant natural carbohydrates are promising structures for the development of future drugs endowed with enhanced hydrolytic stability. An open synthetic challenge in this field is the optimization of new methodologies for the stereo- and regioselective opening of α-gluco carbasugar 1,2-epoxides that allow for the preparation of pseudo mono- and disaccharides of great interest. Therefore, we investigated the effect of Lewis acids and solvate ionic liquids (SILs) on the epoxide ring opening of a model substrate. Of particular interest was the complete stereo- and regioselectivity, albeit limited to simple nucleophiles, toward the desired C(1) isomer that was observed using LiClO4. The results obtained with SILs were also remarkable. In particular, Li[NTf2]/tetraglyme ([Li(G4)]TFSI) was able to function as a Lewis acid and to direct the attack of the nucleophile preferentially at the pseudo anomeric position, even with a more complex and synthetically interesting nucleophile. The regioselectivity observed for LiClO4 and [Li(G4)]TFSI was tentatively ascribed to the formation of a bidentate chelating system, which changed the conformational equilibrium and ultimately permitted a trans-diaxial attack on C(1). To the best of our knowledge, we report here the first case in which SILs were successfully employed in a ring-opening process of epoxides.

Molecules published new progress about [Li(G3)]TFSI; [Li(G4)]TFSI; carbasugars; solvate ionic liquids (SILs); α-gluco 1,2-epoxide. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application of 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Kolomoiets, O. V. published the artcileSolid polymer electrolyte for improving the safety of the lithium-sulfur battery, Related Products of ethers-buliding-blocks, the main research area is lithium sulfur battery polymer electrolyte safety.

Polymer electrolytes containing: 1) Polymer matrix Polyvinylidene fluoride (PVDF), 2) Ionic liquid / quaternary ammonium salt, 3) Lithium salt,LiN(CF3SO2)2, 4) Plasticizer,tetraglym (G4) have been investigated using: SEM, impedance, cyclic voltammetry and galvanostatic studies in the lithium-sulfur system. The prospects of the polymer electrolyte use for improving the safety of lithium-sulfur batteries are shown. Developed polymer electrolytes are promising for use in Li S batteries in a wide temperature range from minus 200C to plus 1000C, and for long-term storage of Li-S batteries.

ECS Transactions published new progress about lithium sulfur battery polymer electrolyte safety. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Related Products of ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

De Giorgio, Francesca published the artcileDeciphering the Interplay between Binders and Electrolytes on the Performance of Li4Ti5O12 Electrodes for Li-Ion Batteries, HPLC of Formula: 143-24-8, the main research area is binder electrolyte lithium titanium oxide electrode battery.

Lithium titanium oxide (Li4Ti5O12, LTO) is an attractive neg. electrode for the development of safe-next-generation-lithium-ion batteries (LIBs). LTO can find specific applications complementary to existing alternatives for LIBs thanks to its good rate capability at high C-rates, fast lithium intercalation, and high cycling stability. Furthermore, LIBs featuring LTO electrodes are inherently safer owing to the LTO’s operating potential of 1.55 V vs. Li+/Li where the commonly used organic-based electrolytes are thermodynamically stable. Herein, we report the combined use of water-soluble sodium alginate (SA) binder and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)-tetraglyme (1m-T) electrolyte and we demonstrate the improvement of the electrochem. performance of LTO-based electrodes with respect to those operating in conventional electrolyte 1M LiPF6-ethylene carbonate: di-Me carbonate (LP30). We also tackle the anal. of the impact of combining the binder/electrolyte on the long-term cycling performance of LTO electrodes featuring SA or conventional polyvinylidene fluoride (PVdF) as binders. Therefore, to assess the impact of the combination of binder/electrolyte on performance, we performed post-mortem characterization by ex situ synchrotron diffraction experiments of LTO electrodes after cycling in LP30 and 1m-T electrolytes.

Energies (Basel, Switzerland) published new progress about Binders. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, HPLC of Formula: 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Zivkovic, Nikola V. published the artcileVolumetric and Viscometric Study of 1-Hexanol-Based Binary Systems: Experimental Determination and Modeling, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is volumetric viscometric hexanol based binary system model.

D., viscosity, and refractive index of four binary mixtures with 1-hexanol are exptl. determined at seven temperatures, at from 288.15 to 318.15 K and at atm. pressure. The choice of mixtures was based on their potential for applications in flue gas cleaning processes. From exptl. data, excess molar volume, viscosity deviation, excess molar Gibbs free energy of activation of viscous flow, deviation in refractive index, and partial and excess partial molar volumes are calculated, correlated with the Redlich-Kister equation, and used for better understanding of mol. interactions between the mixture components. Since the mixtures were investigated both from the theor. point of view and with the aspect for practical applications, modeling of two key properties, viscosity and excess molar volume, was performed with different models and approaches and the results are compared with exptl. values.

Journal of Chemical & Engineering Data published new progress about Density. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Name: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Gonzalez, Juan A. published the artcileVolumetric and Viscosimetric Measurements for Methanol + CH3-O-(CH2CH2O)n-CH3 (n = 2, 3, 4) Mixtures at (293.15-303.15) K and Atmospheric Pressure: Application of the ERAS Model, COA of Formula: C10H22O5, the main research area is methanol trioxanonane tetraoxadodecane pentaoxapentadecane thermophys property.

Abstract: Densities, ρ, and kinematic viscosities, ν, have been determined at atm. pressure and at 293.15-303.15 K for binary mixtures formed by methanol and one linear polyether of the type CH3-O-(CH2CH2O)n-CH3 (n = 2, 3, 4). Measurements on ρ and ν were carried out, resp., using an Anton Paar DMA 602 vibrating-tube densimeter and an Ubbelohde viscosimeter. The ρ values were used to compute excess molar volumes, VEm, and, together with the ν results, dynamic viscosities (η). Deviations from linear dependence on mole fraction for viscosity, Δη, are also provided. Different semi-empirical equations have been employed to correlate viscosity data. Particularly, the equations used are the: Grunberg-Nissan, Hind, Frenkel, Katti-Chaudhri, McAllister and Heric. Calculations show that better results are obtained from the Hind equation. The VEm values are large and neg. and contrast with the pos. excess molar enthalpies, HEm, available in the literature, for these systems. Methanol + CH3-O-(CH2CH2O)n-CH3 mixtures have been treated in the framework of the ERAS model. Results for HEm are acceptable, while the composition dependence of the VEm curves is poorly represented. This has been ascribed to the existence of strong dipolar and structural effects in the present solutions

Journal of Solution Chemistry published new progress about Density. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, COA of Formula: C10H22O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Komudzinska, Marlena published the artcileThe volume properties of selected glymes in N,N-dimethylformamide + water mixtures. The hydrophobic hydration process of glymes, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is glyme molar volume hydration.

This paper presents the d. of selected glymes (monoglyme, diglyme, triglyme and tetraglyme) in N,N-dimethylformamide + water mixtures at four temperatures: 293.15 K, 298.15 K, 303.15 K and 308.15 K. The d. data were used to calculate the apparent molar volumes (VΦ,m) and limiting apparent molar volumes (V0Φ,m = V0m), as well as the limiting molar expansion volume coefficient E0p,m. Changes in the obtained values of the physicochem. parameters, as functions of composition and temperature, were analyzed in terms of the mol. interactions and structural differentiation of the investigated systems. The process of hydrophobic hydration of the studied glymes is visible in the area of high water content in the mixture

Journal of Molecular Liquids published new progress about Density. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liu, Qingshan published the artcileStudy of apparent molar volumes of ether functionalized ionic liquids with three ether solvents, HPLC of Formula: 143-24-8, the main research area is molar volume ether functionalized ionic liquid solvent.

The d. of two functionalized ionic liquids (FILs) 1-methoxyethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([MOEmim][NTf2] and 1-methoxyethyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide [MOEmmim][NTf2]) have been measured with ether solvents proprylene glycol monomethyl ether (PEGMME), diethylene glycol di-Me ether (DEGDME), tetraethylene glycol di-Me ether (TEGDME) at diluted concentration range. The determined temperature range is from 293.15 to 328.15 K at atm. pressure. The measured densities are used for the calculation of apparent molar volumes, Vφ/m3.mol-1, at the temperature range. The effects of the ether (-O-) and Me (-CH3) introduction on imidazolium cation are discussed for the d. and apparent molar volume in deeply. The Redlich-Rosenfeld-Meyer (RRM) equation was used for the fitting of apparent molar volumes, Vφ/m3.mol-1, for the six studied dilute solutions The infinite dilution apparent molar volumes, Vφ/m3.mol-1, and limiting apparent molar expansibility, E0φ/cm3.mol-1.K-1, have been obtained and discussed from the RRM equation and polynomial equation. The thermal expansion coefficients, α/K-1, have also been calculated and discussed from d. for the studied dilute solutions in the temperature range.

Journal of Molecular Liquids published new progress about Density. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, HPLC of Formula: 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Jankowski, Piotr published the artcileStructure of Magnesium Chloride Complexes in Ethereal Systems: Computational Comparison of THF and Glymes as Solvents for Magnesium Battery Electrolytes, COA of Formula: C10H22O5, the main research area is magnesium chloride THF electrolyte electron transfer anion glyme.

The structure of the electrolyte is crucial for the performance of rechargeable magnesium batteries. Doubly charged cations interact much stronger with both anions and solvent mols., forming different size clusters. Here, we apply DFT calculations to investigate salt solvation by altering the first solvation shell of the magnesium-chloride complexes in different ethereal solvents: THF, monoglyme, diglyme, triglyme and tetraglyme. The anal. was performed by looking for the most stable structures, considering mono-, di- and trimeric clusters of MgxCly. The determination of clusters geometries, together with their energies, resulted in a comprehensive picture of the thermodynamically preferred state of the electrolyte, and allowed for a simple assessment of the electrochem. activity of the electrolyte. Our anal. shows that clustering is beneficial for desolvation of magnesium from the cluster, but causes overpotentials due to hindered electron transfer.

Batteries & Supercaps published new progress about Anions. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, COA of Formula: C10H22O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem