Category: 143-24-8

Li, Jia published the artcileBoron-doped carbon microspheres as a new catalyst for rechargeable Li-CO2 batteries, Synthetic Route of 143-24-8, the main research area is boron doped carbon microsphere lithium battery electrochem property.

Li-CO2 batteries are thought to be a promising technol. for it can combine storing energy with mitigating the “”greenhouse effect””. However, CO2 electrochem. reduction reaction is known to be a kinetically sluggish one. Therefore, researchers are committed to exploring catalysts with high catalytic activity to drive the reaction. In this study, boron-doped carbon microspheres (B-CMs) with mesoporous structure and large sp. surface area were prepared using one-step impregnation followed by calcination. Active sites are increased by the pos. charged boron atoms in B-CMs, thus, endowing higher catalytic performance for Li-CO2 batteries. The Li-CO2 battery with B-CMs cathode exhibited excellent performance, delivering a high discharge capacity of 17,429 and 11,975 at the c.d. of 200 and 500 resp., and can stably run 90 cycles at the c.d. of 200 with a limited capacity of 1000.

Fullerenes, Nanotubes, and Carbon Nanostructures published new progress about Calcination. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Synthetic Route of 143-24-8.

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

Robba, A. published the artcileFingerprinting Mean Composition of Lithium Polysulfide Standard Solutions by Applying High-Energy Resolution Fluorescence Detected X-ray Absorption Spectroscopy, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium sulfur battery polysulfide solution x ray absorption spectroscopy.

In a lithium/sulfur (Li/S) battery, the reduction of sulfur during discharge involves a particular mechanism, where the active material successively dissolves into the electrolyte to form lithium polysulfide intermediate species (Li2Sx), with x being a function of the state of charge. In this work, sulfur K-edge resonant inelastic X-ray scattering measurements were performed for the characterization of different Li2Sx polysulfide standard solutions High-energy resolution fluorescence detected X-ray absorption spectroscopy allowed clear separation the pre-edge absorption peak corresponding to terminal sulfur atoms from the main absorption peak due to internal atoms and allowed quant. evaluation of the evolution of the peak area ratio as a function of the polysulfide chain length. Results of this exptl. work demonstrate that the normalized area of the pre-edge is a reliable fingerprint of the Li2Sx mean chain length in agreement with recent theor. predictions. As a perspective, this work confirms that operando HERFD XAS can be used to differentiate mean polysulfide composition, which is key issue in the characterization of Li/S cells.

Journal of Physical Chemistry Letters published new progress about Composition. 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

Jozwiak, Malgorzata published the artcileCompression of selected glymes in N,N-dimethylformamide + water. The hydration numbers and hydrophobic hydration process of glymes, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is glyme DMF water hydrophobic hydration number compression process.

This paper presents the speed of sound in selected glymes (monoglyme, diglyme, triglyme and tetraglyme) in N,N-dimethylformamide + water mixed solvent at four temperatures: 293.15 K, 298.15 K, 303.15 K and 308.15 K. The data obtained were used to calculate the values of isentropic compressibility (κS) of glymes solutions and apparent molar isentropic compression (KS,Φ,m), as well as the limiting partial molar isentropic compression (K0S,m) of glymes in the mixed solvent (DMF + W). Changes in the obtained values of the physicochem. parameters, as functions of temperature or mole fraction of water in the mixed solvent, were analyzed in terms of the mol. interactions and structural differentiation of the investigated systems. The hydrophobic hydration process of the studied glymes is visible in the high water content area of the mixed solvent. The hydration number of glymes in water at four temperatures was calculated and analyzed.

Journal of Molecular Liquids published new progress about Compression. 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

Dorai, Arunkumar published the artcileVisualization of polysulfide dissolution in lithium-sulfur batteries using in-situ NMR microimaging, Quality Control of 143-24-8, the main research area is lithium sulfur battery magnetic resonance imaging.

Lithium-sulfur batteries offer the highest theor. energy d. among enclosed rechargeable batteries. However, there are various issues that need to be addressed before their practical adoption, such as the dissolution of intermediate lithium polysulfides (Li2Sn) into the electrolyte solution, which causes rapid degradation of the battery. Herein, we used NMR (NMR) and in-situ magnetic resonance imaging (MRI) to visualize the dissolution of the intermediate species formed during the discharge-charge process in Li-S batteries. A strong enhancement in the MRI signal was observed when the cell was first discharged, which is associated with the dissolution of intermediate polysulfides. To determine the origin of this signal enhancement, 1H NMR spectra, T1 relaxation time, and ESR (ESR) measurements were performed on electrolyte containing polysulfides. The origin of the strong enhancement of the MRI signal by the dissoluted polysulfides is mainly attributed to the paramagnetic interaction due to the formation of S*-3 and S*-4 radicals in the dissoluted polysulfides. The results demonstrate that 1H MRI is an indirect and effective way to study and visualize the intermediate species formed during Li-S battery operation.

Electrochemistry Communications published new progress about Dissolution. 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

Nagumo, Ryo published the artcileCorrelation between Macroscopic Diffusion Rates and Microscopic Interactions in Ethylene Glycol-Based Solvents, Related Products of ethers-buliding-blocks, the main research area is diffusion residence time ethylene glycol based solvent MD simulation.

An evaluation of mol. interactions is important for estimating macroscopic properties, such as solubility and diffusivity. In this study, for several types of ethylene glycol-based absorbents, we discuss the correlation between a macroscopic property (mol. diffusivity) and a microscopic criterion (residence time) using mol. dynamics simulations for pure solvent systems and CO2-loaded solvent systems. The neg. correlations between the diffusivity and the residence time can be divided into categories, depending on the number of constituent hydroxy groups of the solvent mols. The disparity between the categories arises from whether hydrogen bonding can be formed between the solvent mols. This study leads to the systematic estimation of the mol. diffusivity from the theor. prediction of the residence time. We believe that the residence time is suitable as a criterion to evaluate macroscopic properties.

Industrial & Engineering Chemistry Research published new progress about Absorbents. 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

Wang, Qin published the artcileTheoretical investigations on the cycle performance of a single-pressure diffusion absorption heat transformer with LiBr-H2O-R134a-TEGDME, COA of Formula: C10H22O5, the main research area is LiBr water tetrafluoroethane TEGDME pressure diffusion absorption heat transformer.

A simulation model using the first thermodn. law is first proposed to estimate the performance of diffusion absorption heat transformer, which could potentially improve energy utilization efficiency and reduce CO2 emission. Thermodn. analyses are performed to investigate the cycle performance when H2O is employed as refrigerant, LiBr as absorbent for H2O, R134a as diffusion gas and TEGDME as absorbent for R134a. Analyses aim to optimize system COP under specified temperature of two generators, two absorbers, evaporator and condenser, and compare the influence of the six temperatures on COP. The results under design conditions show that larger generation efficiency of R134a and smaller mass fraction of LiBr in H2O-LiBr solution are beneficial to COP improvement, but they are limited by the operating conditions. There is an optimal ratio of H2O-LiBr solution mass flow rate to R134a mass flow rate for an optimal COP, and the optimal ratio decreases with the increase of LiBr mass fraction in H2O-LiBr solution The highest COP of 0.1701 is reached with the optimal ratio of 1.743. In addition, under design-off conditions, the temperatures of refrigerant generator and evaporator have the greatest influence on COP while the temperature of diffusion gas generator has the least influence. The diffusion absorption heat transformer will provide a new way to lift temperature of low grade heat without electricity input which can further improve the energy utilization efficiency and reduce the CO2 emission.

Journal of Cleaner Production published new progress about Absorbents. 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

Shi, Wei published the artcileComputational Screening of Physical Solvents for CO2 Pre-combustion Capture, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is computational screening solvent carbon dioxide absorption precombustion.

A computational scheme was used to screen phys. solvents for CO2 pre-combustion capture by integrating the com. NIST database, an inhouse computational database, chem-informatics, and mol. modeling. A com. available screened hydrophobic solvent, di-Et sebacate, was identified from the screening with favorable phys. properties and promising absorption performance. The promising performance to use di-Et sebacate in CO2 pre-combustion capture has also been confirmed from experiments Water loading in di-Et sebacate is very low, and therefore, water is kept with H2 in the gas stream. The favorable CO2 interaction with di-Et sebacate and the intermediate solvent free volume fraction leads to both high CO2 solubility and high CO2/H2 solubility selectivity in di-Et sebacate. An inhouse NETL computational database was built to characterize CO2, H2, N2, and H2O interactions with 202 different chem. functional groups. It was found that 13% of the functional groups belong to the strong interaction category with the CO2 interaction energy between -15 and -21 kJ/mol; 62% of the functional groups interact intermediately with CO2 (-8 to -15 kJ/mol). The remaining 25% of functional groups interact weakly with CO2 (below -8 kJ/mol). In addition, calculations show that CO2 interactions with the functional groups are stronger than N2 and H2 interactions but are weaker than H2O interactions. The CO2 and H2O interactions with the same functional groups exhibit a very strong linear pos. correlation coefficient of 0.92. The relationship between CO2 and H2 gas solubilities and solvent fractional free volume (FFV) has been systematically studied for seven solvents at 298.2 K. A skewed bell-shaped relation was obtained between CO2 solubility and solvent FFV. When an organic compound has a d. approx. 10% lower than its d. at 298.2 K and 1 bar, it exhibits the highest CO2 loading at that specific solvent d. and FFV. Note that the solvent densities were varied using simulations, which are difficult to be obtained from the experiment In contrast, H2 solubility results exhibit an almost perfect pos. linear correlation with the solvent FFV. The theor. maximum and min. phys. CO2 solubilities in any organic compound at 298.2 K were estimated to be 11 and 0.4 mol/MPa L, resp. An examination of 182 exptl. CO2 phys. solubility data and 29 simulated CO2 phys. solubilities shows that all the CO2 phys. solubility data are within the maximum and min. with only a few exceptions. Finally, simulations suggest that in order to develop phys. solvents with both high CO2 solubility and high CO2/H2 solubility selectivity, the solvents should contain functional groups which are available to interact strongly with CO2 while minimizing FFV.

Journal of Physical Chemistry B published new progress about Absorbents. 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, Haode published the artcileOrganic Ammonium Ion Battery: A New Strategy for a Nonmetallic Ion Energy Storage System, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is ammonium battery charge carrier nonmetallic ion energy storage system; Ammonium-Ion Batteries; Electrochemistry; Organic Electrolytes; Prussian White Analogues.

Nonmetallic ammonium (NH4+) ion batteries are promising candidates for large-scale energy storage systems, which have the merit of low molar mass, sustainability, non-toxicity and non-dendrite. Herein, for the first time, we introduce the novel organic ammonium ion batteries (OAIBs). Significantly, a manganese-based Prussian white analog (noted as MnHCF) as cathode exhibits a reversible capacity of 104 mAh g-1 with 98% retention over 100 cycles. We further demonstrate the electrochem. performance of the NH4+ ion full cell, which delivers a reversible capacity of 45 mAh g-1 with a broad electrochem. window. Combining ex situ XPS, ex situ XRD results and electrochem. properties, the NH4+ ion storage mechanism of MnHCF in a non-aqueous electrolyte is clearly revealed. This work verifies the feasibility of employing NH4+ ions as charge carriers in organic energy storage systems and provides new insights for designing organic nonmetallic ion batteries with broad electrochem. windows and high energy d.

Angewandte Chemie, International Edition published new progress about Absorption. 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

Steinrueck, Hans-Georg published the artcileGeneral relationship between salt concentration and x-ray absorption for binary electrolytes, Application In Synthesis of 143-24-8, the main research area is salt concentration cell polarization absorption relaxation binary electrolyte.

We derive a general relationship between salt concentration and x-ray absorption for binary electrolytes. Volume and mass conservation are considered. The relationship can be used to measure salt concentration profiles via x-ray absorption imaging during cell polarization and relaxation. In conjunction with concentrated solution theory, the derived relationship is as a powerful tool to accurately determine transport coefficients such as cation transference number in ion battery electrolytes and to test thermodn. models. The relationship is electrolyte-agnostic, as long as the product between mass attenuation coefficient, inverse partial molar volume, and molar mass of the solvent and that of the salt are not equal. (c) 2021 American Institute of Physics.

AIP Advances published new progress about Absorption. 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

Xu, Qiang published the artcileAbsorption of sulfur dioxide by tetraglyme-sodium salt ionic liquid, Product Details of C10H22O5, the main research area is sulfur dioxide absorption tetraglyme sodium salt ionic liquid; SO2 removal; ionic liquid; recyclable absorption; tetraglyme.

A series of tetraglyme-sodium salt ionic liquids have been prepared and found to be promising solvents to absorb SO2. The experiments here show that [Na-tetraglyme][SCN] ionic liquid has excellent thermal stability and a 30% increase in SO2 absorption capacity compared to other sodium salt ionic liquids and the previously studied lithium salt ionic liquids in terms of molar absorption capacity. The interaction between SO2 and the ionic liquid was concluded to be phys. absorption by IR and NMR.

Molecules published new progress about Absorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Product Details of C10H22O5.

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