Category: 143-24-8

Mandal, Subhankar published the artcileTransition Metal Phthalocyanines as Redox Mediators in Li-O2 Batteries: A Combined Experimental and Theoretical Study of the Influence of 3d Electrons in Redox Mediation, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is phthalocyanines lithium oxygen battery redox mediator transition metal; DFT calculations; GITT; Li−oxygen battery; electrochemistry of transition-metal phthalocyanines; impedance; reaction mechanism of ORR and OER; redox mediator.

Redox mediation is an innovative strategy for ensuring efficient energy harvesting from metal-oxygen systems. This work presents a systematic exploratory anal. of first-row transition-metal phthalocyanines as solution-state redox mediators for lithium-oxygen batteries. Our findings, based on experiment and theory, convincingly demonstrate that d5 (Mn), d7 (Co), and d8 (Ni) configurations function better compared to d6 (Fe) and d9 (Cu) in redox mediation of the discharge step. The d10 configuration (Zn) and non-d analogs (Mg) do not show any redox mediation because of the inability of binding with oxygen. The solution-state discharge product, transition-metal bound Li2O2, undergoes dissociation and oxidation in the charging step of the battery, thus confirming a bifunctional redox mediation. Apart from the reaction pathways predicted based on thermodn. considerations, d. functional theory calculations also reveal interesting effects of electrochem. perturbation on the redox mediation mechanisms and the role of the transition-metal center.

ACS Applied Materials & Interfaces published new progress about Aggregation. 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

Yang, Yuanying published the artcileHigh Active Magnesium Trifluoromethanesulfonate-Based Electrolytes for Magnesium-Sulfur Batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is high active magnesium trifluoromethanesulfonate electrolyte magnesium sulfur battery; anthracene; electrolytes; magnesium−sulfur batteries; rechargeable magnesium batteries; trifluoromethanesulfonate.

The shortage of high-performance and easily prepared electrolyte has hindered the progress of rechargeable magnesium-sulfur (Mg-S) batteries. In this paper, we develop a new electrolyte based on Mg(CF3SO3)2-AlCl3 dissolved in THF and tetraglyme mixed solvents. Mg(SO3CF3)2 as an Mg2+ source is nonnucleophilic, easy to handle, and much cheaper than Mg(TFSI)2 (TFSI = bis(trifluoromethanesulfonyl)imide). After modification with anthracene (π stabilizing agent) as a coordinating ligand to stabilize the Mg2+ ions and MgCl2 to improve the interface properties by accelerating the reaction of Mg(CF3SO3)2 with AlCl3, the electrolyte exhibits a low overpotential for overall Mg deposition and dissolution, moderate anodic stability (3.25 V on Pt, 2.5 V on SS, 2.0 V on Cu, and 1.85 V on Al, resp.), and a suitable ionic conductivity (1.88 mS cm-1). More importantly, this electrolyte modulated by Li-salt additives exhibits good compatibility with S cathode and can be applicable for Mg-S batteries. The rational formulation of the new electrolyte could provide a new avenue for simply prepared Mg electrolytes of Mg-S and rechargeable magnesium batteries.

ACS Applied Materials & Interfaces published new progress about Ball milling. 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

Go, Wooseok published the artcileInvestigation on the Structure and Properties of Na3.1Zr1.55Si2.3P0.7O11 as a Solid Electrolyte and Its Application in a Seawater Battery, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is sodium superionic conductor solid electrolyte seawater battery; NASICON; ceramic; ionic conductivity; seawater battery; solid electrolyte.

The ionic conductivity, bend strength, and electrochem. performance in a seawater battery (SWB) of an Na3.1Zr1.55Si2.3P0.7O11 (vA-NASICON) solid electrolyte were compared to those of Na3Zr2Si2PO12 (H-NASICON). vA-NASICON exhibited three times higher total ionic conductivity (8.6 x 10-4 S/cm) than H-NASICON (2.9 x 10-4 S/cm). This is due to the higher bulk ionic conductivity and lower grain boundary resistance of vA-NASICON. The higher bulk conductivity of vA-NASICON is a result of its higher Na content, leading to a larger concentration of charge carriers and/or the formation of a higher conductive rhombohedral phase. The lower grain boundary resistance of vA-NASICON is a result of its larger grain size and reduced ZrO2 content. The bend strength of vA-NASICON (95 MPa) was 30% higher than that of the H-NASICON ceramic. The higher bend strength of vA-NASICON was attributed to its reduced ZrO2 secondary phase (1.1 vol %) compared to that of H-NASICON (2.6 vol %). When the vA-NASICON ceramic was tested in the SWB as a solid electrolyte, an 8.27% improved voltage efficiency and 81% higher power output were demonstrated, compared to those of H-NASICON, as a result of its higher total ionic conductivity and mech. strength. At the same time, the vA-NASICON membrane revealed comparable cycle life (1000 h) to that of H-NASICON. These results suggest that vA-NASICON can be a better alternative than H-NASICON for use in the SWB.

ACS Applied Materials & Interfaces published new progress about Ball milling. 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

Kucuk, Asuman Celik published the artcileLow-cost fluoride source for organic liquid electrolyte-based fluoride shuttle battery, Quality Control of 143-24-8, the main research area is fluoride shuttle battery organic liquid electrolyte defluorination.

The effects of using low-cost inorganic fluoride salts (i.e., KF or NaF) as fluoride sources in fluoride shuttle batteries (FSBs) on the electrochem. compatibility of BiF3 electrodes are investigated herein. The preparation of electrolytes containing saturated KF or NaF and 0.5 M 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (DiOB-Py) in G4 is described. For Py/NaF/G4, the discharge and charge reactions of BiF3 were hindered because of the low solubility of NaF as well as the low ionic conductivity of the electrolyte. However, inductively coupled plasma mass spectrometry (ICP-MS) anal. revealed that the solubility of KF in Py/KF/G4 was moderate and the ionic conductivity of Py/KF/G4 was promising. Higher oxidation and reduction peaks observed in the cyclic voltammograms of Py/KF/G4 than those of Py/G4 and Py/NaF/G4 are attributed to the enhanced electrochem. activity of the former. Consequently, the BiF3/C nanocomposite electrode exhibits good cycling capability in Py/KF/G4, with initial discharge/charge capacities of 316/218 mAh g-1, resp. Moreover, the ICP-MS and Raman spectroscopy analyses revealed that defluorination reactions of BiF3 occur via a direct desorption mechanism. Py/KF/G4 is the first effective electrolyte based on a low-cost inorganic salt. FSBs exhibit improved performance in Py/KF/G4 compared with CsF salt systems, which warrants further investigation.

Journal of the Electrochemical Society published new progress about Ball milling. 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

Liu, Xiao published the artcileInhibition of Discharge Side Reactions by Promoting Solution-Mediated Oxygen Reduction Reaction with Stable Quinone in Li-O2 Batteries, Quality Control of 143-24-8, the main research area is lithium oxygen battery quinone redox mediator oxygen reduction reaction; Li2O2; lithium−oxygen batteries; oxygen reduction reaction; quinone; redox mediator; solution mediated.

Aprotic lithium-oxygen (Li-O2) batteries with an ultrahigh theor. energy d. have great potential in rechargeable power supply, while their application still faces several challenges, especially poor cycle stability. To solve the problems, one of the effective strategies is to inhibit the generation of the LiO2 intermediate produced via a surface-mediated oxygen reduction reaction (ORR) pathway, which is an important species inducing byproduct generation and low cell cyclic stability. Herein, a series of quinones and solid materials serve as the solution-mediated and surface-mediated ORR catalysts, and it was found that the generation of LiO2 and byproducts from solid catalysts was inhibited by quinones. Among the studied quinones, benzo[1,2-b:4,5-b’]dithiophene-4,8-dione, a quinone mol. with the advantage of a highly sym. planar and conjugated structure and without α-H, exhibits high redox potential, diffusion coefficient, and electrochem. stability, and consequently the best ORR activities and the capability to inhibit byproduct generation. It indicated that the increase of the solution-mediated ORR pathway plays an important role in restraining the discharging side reaction, substantially improving cell cycle stability and capacity. This study provides the theor. and exptl. basis for better understanding the ORR process of Li-O2 batteries.

ACS Applied Materials & Interfaces published new progress about Carbon paper. 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

Kikuchi, Arizumi published the artcileEvaluation of the efficacy of various reagents in improving microRNA extraction, SDS of cas: 143-24-8, the main research area is efficacy formalin fixation paraffin embedding microRNA extraction; Efficacy; RNA extraction; formalin fixation and paraffin embedding; microRNA; quantitative real-time reverse transcription PCR; stem-loop RT primer.

Background: MicroRNA has received considerable attention in the clin. context, and attempts are being made to use microRNA in clin. diagnosis. However, adequate quantities of microRNA required for anal. are challenging to isolate. We tested the effect of various reagents in improving microRNA extraction and compared their efficacy to that of a com. available extraction kit (HighPure miRNA isolation kit, Roche). Methods: We used the synthetic oligonucleotide miR-21 and formalin-fixed, paraffin-embedded (FFPE) tissue sections from colon cancer samples (n = 10). We tested increasing volumes (100-600μL) of 1,4-dioxane, 2-butanol, 2-propanol, acetonitrile, polyethylene glycol (PEG) 600, PEG 1000, PEG 1540, PEG 2000, tetraethylene glycol di-Me ether (TDE), and THF, instead of the binding enhancer solution provided in the kit. MiR-21 anal. was performed via stem-loop RT-qPCR using Universal ProbeLibrary probe (Roche). Results: The optimum amount of each enhancement solution was 200-500μL. We obtained ΔCp values of optimum addnl. volume for each solution from 1.04 to 2.50 and compared these with those obtained using the com. available kit. PEG 1540 and 2000 produced superior reactivity with minimal addition For FFPE tissue samples, addition of the enhancement solutions PEG 1540 and 2000 resulted in mean crossing point values of 18.15 ± 2.26 and 17.73 ± 3.26, resp. We obtained a crossing point value of 20.56 ± 4.26 (mean ± SD) using the com. available kit. Conclusions: The tested enhancer reagents, which are relatively readily available and easy to use, can improve microRNA extraction efficacy of a com. available kit.

Annals of Clinical Biochemistry published new progress about Colon neoplasm. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

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

Celik Kucuk, Asuman published the artcileFluoride shuttle batteries: On the performance of the BiF3 electrode in organic liquid electrolytes containing a mixture of lithium bis(oxalato)borate and triphenylboroxin, Quality Control of 143-24-8, the main research area is lithium bisoxalato borate triphenylboroxin bismuth trifluoride electrode liquid electrolytes.

In a typical organic liquid electrolyte-based fluoride shuttle battery (FSB), a high concentration of a boron-based anion acceptor (AA) capable of binding specific anions is required to provide a sufficient amount of dissolved fluoride salt. The tetraglyme (G4)-based electrolyte system (LiBOB0.25/TPhBX0.25/sat_CsF/G4) containing equal concentrations of LiBOB, TPhBX, and saturated cesium fluoride (CsF) was prepared The potential effects of reducing the amount of the AA and using a mixture of LiBOB and TPhBX on the electrochem. compatibility of the BiF3 electrode were investigated through cyclic voltammetry, charge-discharge tests, and a.c. impedance measurements. The potential advantages of using the LiBOB/TPhBX mixture as an electrolyte additive include the fact that it increases ionic conductivity, widens the cathodic and anodic stability window, and enhances the electrochem. performance of the BiF3 pos. electrode. Moreover, according to Raman microscopy, the direct insertion mechanism was found to be predominant for the FSB reaction mechanism of BiF3 microparticles in LiBOB0.25/TPhBX0.25/sat_CsF/G4. These improvements can be attributed to the increase in fluorine anion mobility, which occurs when the cesium cation mobility is reduced; this, in turn, is a result of the stabilization of the cesium cation due to the interaction between LiBOB and TPhBX.

Solid State Ionics published new progress about Defluorination. 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

Thum, Andreas published the artcileSolvate ionic liquids based on lithium bis(trifluoromethanesulfonyl)imide-glyme systems: coordination in MD simulations with scaled charges, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvate ionic liquid lithium trifluoromethanesulfonylimide triglyme tetraglyme complexation MD.

Equimolar mixtures of lithium bis(trifluoromethanesulfonyl)imide (Li[NTf2]) with triglyme or tetraglyme (small oligoethers) are regarded as a new class of ionic liquids, the so-called solvate ionic liquids In these mixtures, the glyme mols. wrap around the lithium ions forming crown-ether like [Li(glyme)1]+ complex cations. New mol. dynamics (MD) simulations suggest that the lithium-glyme coordination is stronger than that predicted in a former MD study, whereas lithium-NTf2 connections are weaker. The differences between the present and the previous study arise from different starting conditions. Both studies employed charges scaled by a factor of 0.8. As shown by the comparison of MD simulations with and without reduced charges to experiments, charge scaling is necessary in order to obtain data close to exptl. results.

Physical Chemistry Chemical Physics published new progress about Atomic charge. 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

Zhang, Leyuan published the artcileHybrid Electrolyte Engineering Enables Safe and Wide-Temperature Redox Flow Batteries, Related Products of ethers-buliding-blocks, the main research area is hybrid electrolyte engineering redox flow battery temperature; electrolyte chemistry; energy storage; hybrid electrolyte; redox flow batteries; wide temperature range.

Electrolyte is an important component in redox flow batteries (RFBs) that determines the current capability, potential window, and safety, but both aqueous and nonaqueous electrolytes have their intrinsic limits. Here, we develop the proof-of-concept hybrid electrolyte chem. to enable the design of safe and wide-temperature RFBs. In addition to the non-flammable characteristics, the hybrid electrolyte also inherits the high electrochem. stability and wide operational temperature range. It can show a potential window of 2.5 V and maintain high ion conductivities at low temperatures It also enables LiI to achieve high Coulombic efficiencies of >99.9 %, showing long cycling stability over 800 cycles. Moreover, it enables the successful operation of Zn/LiI RFBs at -20 °C for 150 cycles with nearly no capacity loss. This study highlights the great potential of hybrid electrolyte chem. for the approach of safe and high-performance large-scale energy storage systems in wide temperature ranges.

Angewandte Chemie, International Edition published new progress about Boiling point. 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

Park, Myung-Soo published the artcileEffect of organic solvents on the electrochemical performance of sodium-ion hybrid capacitors, SDS of cas: 143-24-8, the main research area is sodium ion hybrid capacitor organic solvent electrochem property.

A comparative study on the ionic conductivity of carbonate- and ether-based electrolytes was performed, which showed that the ionic conductivity was strongly affected by the dielec. constant of the organic solvent. The relationship between the physicochem. properties of a liquid electrolyte and the cycling performance of sodium-ion hybrid capacitors (SICs) was assessed by comparing the electrochem. characteristics of SICs assembled with a neg. activated carbon electrode and a pos. Na3V2(PO4)3 electrode. Cyclic voltammetry, leakage current measurements, and electrochem. impedance spectroscopy results demonstrated that the good cycling performance of SICs with carbonate-based electrolytes can be ascribed to their superior electrochem. stability, large amounts of free ions, and favorable electrochem. reaction kinetics. An SIC employing an electrolyte consisting of 1.0 M NaClO4 in ethylene carbonate/propylene carbonate exhibited a good rate capability and delivered a high initial discharge capacity of 98.7 mAh g-1 with a capacity retention of 90.8% after 1000 cycles at a constant c.d. of 500 mA g-1.

ChemElectroChem published new progress about Boiling point. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

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