Month: November 2022

Singh Syali, Mohanjeet published the artcileStudies on a novel Na+ superionic conducting polymer gel cocktail electrolyte membrane immobilizing molecular liquid mixture of carbonates, tetraglyme and ionic liquid, Quality Control of 143-24-8, the main research area is superionic conducting polymer gel carbonates tetraglyme ionic liquid.

Novel Na+ superionic conducting polymer gel cocktail electrolyte membranes immobilizing mol. liquid mixture of carbonates, tetraglyme and ionic liquid have been prepared by solution cast method. The optimized free standing electrolyte membrane offers ionic conductivity of 3.3 x 10-3 S cm-1 and sodium-ion transport number of 0.31 at ambient temperature The detailed ion-dynamics have been investigated with the help of frequency dependent dielec. and modulus studies. The possible interaction of these mol. liquids with sodium tetrafluoroborate salt and poly(vinylidiene fluoride-hexafluoropropylene) polymer host is investigated by FTIR studies. The DSC study confirms that the electrolyte system maintains the gel phase up to ∼ 120°C. The linear sweep voltammetry reveal the working voltage range offered by the electrolyte system to be 3.46 V. The Elec. double layer capacitor (EDLC) cell with optimized electrolyte membrane and electrodes of activated carbon demonstrate the specific discharge capacity of ∼ 60F g-1 and drops negligibly with cycle number The reported Na+ superionic conducting cocktail electrolyte system can be utilized as an electrolyte while fabricating electrochem. devices especially the EDLCs.

Journal of Molecular Liquids published new progress about Carbonates Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

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

Barannikov, Vladimir P. published the artcileEffect of Solvent Polarity on Enthalpies of Solvation of Ethylene Oxide Oligomers, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvent polarity effect solvation enthalpy ethylene oxide oligomer.

The enthalpies of dissolution, ΔsolHm∞, and solvation, ΔsolvHm∞, of ether oligomers CH3O(CH2CH2O)nCH3 (n = 1-4) in Et acetate, pyridine, N,N-dimethylformamide, and acetonitrile have been determined from calorimetric measurements at 298.15 K. The values of group contributions of repeated ether units and monoether fragment have been compared on the basis of the additive method. The contributions of ether group to ΔsolvHm∞ for oligomeric and monomeric mols. coincide within their uncertainties for solutions in highly polar solvents, in contrast to non-polar, moderately polar, and H-bonding solvents. The dependence of ether group contributions to ΔsolvHm∞ on the electron pair acceptance index of solvents ETN has been considered.

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

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

Gao, Siliang published the artcileExtractive distillation of benzene, toluene, and xylenes from pyrolysis gasoline using methylsulfonylethane as a cosolvent, Formula: C9H20O5, the main research area is benzene toluene xylene methylsulfonylethane gasoline extractive distillation pyrolysis cosolvent.

Highly efficient separation of benzene, toluene, and xylenes (BTXs) from pyrolysis gasoline is very important in petrochem. industries. Though the extractive distillation (ED) process is simpler and consumes less energy compared with liquid-liquid extraction process, it is difficult for a single solvent, for example, sulfolane, to achieve both high purity and high yield of BTXs. In this work, methylsulfonylethane (MSE) was chosen as a cosolvent to improve the selectivity of sulfolane after solvent screening, and factors that may affect the selectivity of the composite solvent were fully investigated, such as the content of cosolvent, solvent to feed ratio, the composition of the feed, and temperature Furthermore, 240 h of continuous extractive distillation and solvent recovery experiment was carried out using sulfolane (85 wt%)-MES (15 wt%) mixture as solvent. The purity of mixed aromatics obtained was 99.83%, and the yield was as high as 99.7%.

Asia-Pacific Journal of Chemical Engineering published new progress about Alkenes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Formula: C9H20O5.

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

Diederichsen, Kyle M. published the artcileElectrolyte additives to enable nonaqueous polyelectrolyte solutions for lithium ion batteries, COA of Formula: C10H22O5, the main research area is crown ether nonaqueous polyelectrolyte solution lithium ion battery.

Nonaqueous polyelectrolyte solutions, in which a neg. charged macromol. neutralized by lithium is dissolved in nonaqueous solvents, have shown promise as potential high transference number electrolytes. However, in battery-relevant carbonate solvents (ethylene carbonate/dimethyl carbonate blends), it has been shown that lithium ions do not readily dissociate from easily synthesized sulfonated polymers, despite the solvent’s high dielec. constant (∼50). In this work, a range of additives are screened to improve conductivity, and we demonstrate that the addition of less than 5 vol% of 15-crown-5 achieves an order of magnitude conductivity increase by selectively improving lithium dissociation Utilizing the optimized electrolyte, we show that polyelectrolyte solutions may be directly substituted for a standard electrolyte with com. electrodes in a graphite/LiFePO4 cell, providing further motivation for future study of these new electrolytes.

Molecular Systems Design & Engineering published new progress about Diffusion Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 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

Falco, Marisa published the artcileUnderstanding the Effect of UV-Induced Cross-Linking on the Physicochemical Properties of Highly Performing PEO/LiTFSI-Based Polymer Electrolytes, Application In Synthesis of 143-24-8, the main research area is UV crosslinking physicochem polyethylene oxide lithium complex polymer electrolyte; magic angle spinning NMR spectroscopy Raman spectra polymer electrolyte.

The authors report a thorough, multitechnique study of the structure and transport properties of a UV-cross-linked polymer electrolyte based on poly(ethylene oxide), tetra(ethylene glycol)dimethyl ether (G4), and lithium bis(trifluoromethane)sulfonimide. The properties of the cross-linked polymer electrolyte are compared to those of a noncross-linked sample of same composition The effect of UV-induced crosslinking on the physico/chem. characteristics is evaluated by x-ray diffraction, DSC, shear rheol., 1H and 7Li magic angle spinning NMR spectroscopy, 19F and 7Li pulsed field gradient stimulated echo NMR analyses, electrochem. impedance spectroscopy, and Fourier transform Raman spectroscopy. Comprehensive anal. confirms that UV-induced crosslinking is an effective technique to suppress the crystallinity of the polymer matrix and reduce ion aggregation, yielding improved Li+ transport number ( > 0.5) and ionic conductivity ( > 0.1 mS/cm) at ambient temperature, by tailoring the structural/morphol. characteristics of the polymer matrix. Finally, the polymer electrolyte allows reversible operation with stable profile for hundreds of cycles upon galvanostatic test at ambient temperature of LiFePO4-based lithium-metal cells, which deliver full capacity at 0.05 or 0.1 C current rate and keep high rate capabilities up to 1C. This enforces the role of UV-induced crosslinking in achieving excellent electrochem. characteristics, exploiting a practical, easy up-scalable process.

Langmuir published new progress about Crystallinity. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application In Synthesis of 143-24-8.

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

Liu, Zhenjie published the artcileTaming Interfacial Instability in Lithium-Oxygen Batteries: A Polymeric Ionic Liquid Electrolyte Solution, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium oxygen battery polymeric ionic liquid taming interfacial instability.

There is a growing concern about the cyclability and safety, in particular, of the high-energy d. lithium-metal batteries. This concern is even greater for Li-O2 batteries because O2 that is transported from the cathode to the anode compartment, can exacerbate side reactions and dendrite growth of the lithium metal anode. The key to solving this dilemma lays in tailoring the solid electrolyte interphase (SEI) formed on the lithium metal anode in Li-O2 batteries. Here it is reported that a new electrolyte, formed from LiFSI as the salt and a mixture of tetraethylene glycol di-Me ether and polymeric ionic liquid of P[C5O2NMA,11]FSI as the solvent, can produce a stable electrode (both cathode and anode)|electrolyte interface in Li-O2 batteries. Specifically, this new electrolyte, when in contact with lithium metal anodes, has the ability to produce a uniform SEI with high ionic conductivity for Li+ transport and desired mech. property for suppression of dendritic lithium growth. Moreover, the electrolyte possesses a high oxidation tolerance that is very beneficial to the oxygen electrochem. on the cathode of Li-O2 batteries. As a result, enhanced reversibility and cycle life are realized for the resultant Li-O2 batteries.

Advanced Energy Materials published new progress about Electrode-electrolyte interface Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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

Lowicki, Daniel published the artcileStereoselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines, Related Products of ethers-buliding-blocks, the main research area is methyl tetralone preparation enantioselective DFT; methyltetralone lithium enolate protonation chiral amine catalyst.

An efficient enantioselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines I (Y = H, Me; X = H, OH, OMe; Z = t-Bu, H, NO2, Br, OMe; R = H, t-Bu, triphenylmethyl) and IInod t-bu was reported. A broad series of salan-type catalysts I and II was synthesized, including several previously unknown, and subsequently tested in the title reaction. For the first time, a chiral amine I and II used as organocatalyst has shown better results than as stoichiometric protonating agent. Application of only 10 mol% of salan I and II allows to obtain the (S)-2-methyl-1-tetralone with high yield and enantiomeric excess up to 75%. The DFT calculations of the structure of the catalyst and its complex with lithium enolate were conducted, which makes it possible to propose a likely reaction mechanism.

Tetrahedron published new progress about Cyclohexanes Role: CAT (Catalyst Use), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), USES (Uses), RACT (Reactant or Reagent), PREP (Preparation). 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Related Products of ethers-buliding-blocks.

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

Huang, Zhanpeng published the artcileHigh-Capacity and Stable Sodium-Sulfur Battery Enabled by Confined Electrocatalytic Polysulfides Full Conversion, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is sodium sulfur battery electrocatalytic polysulfide full conversion.

The efficient polysulfide capture and reversible sulfur recovery during reverse charging process are critical to exploiting the full potential of room temperature Na-S batteries. Here, based on a core-shell design strategy, the structural and chem. synergistic manipulation of sodium polysulfides quasi-solid-state reversible conversion is proposed. The sulfur is encapsulated in the multi-pores of 3D interconnected carbon fiber as the core structure. The Fe(CN)64–doped polypyrrole film serves as a redox-active polar shell to lock up polysulfides and promote complete polysulfide conversion. Importantly, the short-chain Na2S4 polysulfides are reduced to Na2S directly leaving with a small fraction of soluble intermediates as the cation-transfer medium at the core/shell interface, and freeing up formation of solid Na2S2 incomplete product. Further, the redox mediator with open Fe species electrocatalytically lowers the Na2S oxidation energy barrier and renders the high reversibility of electrodeposited Na2S. The tunable quasi-solid-state reversible sulfur conversion under versatile polymer sheath greatly enhances sulfur utilization, affording a remarkable capacity of 1071 mAh g-1 and a stable high capacity of 700 mAh g-1 at 200 mA g-1 after 200 cycles. The confined electrocatalytic effect provides a strategy for tuning electrochem. pathway of sulfur species and guarantees high-efficiency sulfur electrochem.

Advanced Functional Materials published new progress about Diffusion. 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

Tang, Michael published the artcileGlyme-based electrolyte formulation analysis in aprotic lithium-oxygen battery and its cyclic stability, Formula: C10H22O5, the main research area is aprotic lithium oxygen battery glyme cyclic stability conductivity.

In this work, the effect of electrolyte composition was evaluated on lithium-oxygen (Li-O2) battery using carbon cloth air electrode. Seven ether-based solvents were measured for their conductivity, viscosity, contact angle and decomposition temperature The results were compiled with other phys. properties to screen potential solvents for future testing. Diglyme and tetraglyme were identified and each of them was individually mixed with one of four lithium salts, yielding eight combinations of electrolytes. These electrolytes were assembled into Li-O2 batteries and the voltage and capacity data were recorded during cycling discharge/charge test. The effects of organic electrolyte phys. properties on the battery impedance and cyclic life were discussed. Among the eight electrolytes, lithium bis(trifluoromethane) sulfonimide (LiTFSI) in tetraethylene glycol di-Me ether (tetraglyme) resulted in the longest cyclic life at a discharge capacity cutoff of 2000 mAh g-1Pt than other compositions This performance may be ascribed to the electrolyte’s high conductivity, sufficient viscosity and suitable contact angle with the air electrode.

Energy (Oxford, United Kingdom) published new progress about Electric impedance. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Formula: C10H22O5.

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

Zheng, Ruixin published the artcileOxygen vacancy engineering of vertically aligned NiO nanosheets for effective CO2 reduction and capture in Li-CO2 battery, Computed Properties of 143-24-8, the main research area is oxygen vacancy vertically aligned nickel oxide nanosheet; carbon dioxide reduction capture lithium battery.

The Li-CO2 battery with the concept of turning waste into treasure has aroused great scientific research enthusiasm recently, but unfortunately it is a long shot for the large-scale applications of Li-CO2 battery due to its huge overpotential and poor cycling life at current stage. Herein, NiO nanosheets engineered by O vacancy growing vertically on C clothes (NiO-Vo@CC) was developed as viable catalyst for both CO2 reduction reaction (CO2RR) and CO2 evolution reaction (CO2ER) in Li- CO2 system. The O vacancy decorated by surplus electron will not only work as electron donor (Lewis base) surface to activated the electron-deficient C atom in CO2 but also narrow the band gap of NiO, therefore optimized CO2 conversion kinetic can be obtained by using defective NiO-Vo@CC electrode. The use of defect engineering to achieve performance improvement in aprotic Li-CO2 battery is still in its infancy at current stage and thus the authors’ research initially corroborates that modulation of the surface property via defect engineering can serve as valid strategy to design high performance electrodes for Li-CO2 battery.

Electrochimica Acta published new progress about Crystal vacancies (oxygen). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Computed Properties of 143-24-8.

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