Tag: M.W=200-250

Khan, N. M. published the artcileElectrical conduction of PMMA/PLA doped lithium bis(oxalato) borate based hybrid gel polymer electrolyte, COA of Formula: C10H22O5, the main research area is elec conduction polylactic acid polymethylmethacrylate hybrid gel polymer electrolyte.

The present work highlights the investigation of elec. conduction properties of gel polymer electrolyte (GPE) based poly(methyl) methacrylate (PMMA) and poly(lactic) acid (PLA) blend doped with various compositions of lithium bis(oxalato) borate. The impedance anal. revealed the GPE systems exhibit maximum ionic conductivity of 1.37 x 10-3 S cm-1 for sample PLi20. The elec. properties based on the dielec. permittivity of entire samples decreased with increasing frequency and followed the trend of ionic conductivity Further anal. was carried out to determine the dielec. response at different temperatures, focusing on the most conducting sample (PLi20). Both dielec. constant and loss increase with the increasing temperature, which suggested that total polarization has occurred. In conclusion, the samples with 20 wt% composition of LiBOB exhibit the highest conducting properties which significantly provides good elec. performance for the application in energy storage devices.

Materials Today: Proceedings published new progress about Dielectric constant. 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

Houchins, Gregory published the artcileMechanism for Singlet Oxygen Production in Li-Ion and Metal-Air Batteries, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is mechanism singlet oxygen production lithium ion metal air battery.

Singlet oxygen has emerged as a real mystery puzzling battery science, having been observed in Li-O2 and Na-O2 batteries, in conventional Li-ion batteries with NMC cathodes, and during the oxidation of Li2CO3. The formation of singlet oxygen has been directly linked to the degradation and catastrophic fade seen in these battery chemistries. While there are several proposed hypothesis for its origin, the exact mechanism for the formation of singlet oxygen remains unclear. In this Letter, we attempt to unify these findings by proposing a mechanism of singlet oxygen production in metal-air and Li-ion batteries. We show that a potential dependence of surface termination explains the onset potentials of singlet oxygen release, and in all considered cases the mechanism of singlet oxygen generation is through the chem. disproportionation of the uncoordinated superoxide anion in solution; therefore, the singlet oxygen yield is determined by the concentration of free superoxide vs. alkali superoxide ion pairs in solution

ACS Energy Letters published new progress about Dielectric constant. 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

Ohayon, David published the artcileInfluence of Side Chains on the n-Type Organic Electrochemical Transistor Performance, HPLC of Formula: 23783-42-8, the main research area is side chain organic electrochem transistor; electron mobility; n-type polymers; organic bioelectronics; organic electrochemical transistor; side chain.

N-Type (electron transporting) polymers can make suitable interfaces to transduce biol. events that involve the generation of electrons. However, n-type polymers that are stable when electrochem. doped in aqueous media are relatively scarce, and the performance of the existing ones lags behind their p-type (hole conducting) counterparts. Here, the authors report a new family of donor-acceptor-type polymers based on a naphthalene-1,4,5,8-tetracarboxylic-diimide-bi-thiophene (NDI-T2) backbone where the NDI unit always bears an ethylene glycol (EG) side chain. The authors study how small variations in the side chains tethered to the acceptor as well as the donor unit affect the performance of the polymer films in the state-of-the-art bioelectronic device, the organic electrochem. transistor (OECT). First, substitution of the T2 core with an electron-withdrawing group (i.e., methoxy) or an EG side chain leads to ambipolar charge transport properties and causes significant changes in film microstructure, which overall impairs the n-type OECT performance. Thus the best n-type OECT performer is the polymer that has no substitution on the T2 unit. Next, the authors evaluate the distance of the oxygen from the NDI unit as a design parameter by varying the length of the C spacer placed between the EG unit and the backbone. The distance of the EG from the backbone affects the film order and crystallinity, and thus, the electron mobility. Consequently, work reports the best-performing NDI-T2-based n-type OECT material to date, i.e., the polymer without the T2 substitution and bearing a 6-C spacer between the EG and the NDI units. Work provides new guidelines for the side-chain engineering of n-type polymers for OECTs and insights on the structure-performance relations for mixed ionic-electronic conductors, crucial for devices where the film operates at the aqueous electrolyte interface.

ACS Applied Materials & Interfaces published new progress about Electric conductors. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, HPLC of Formula: 23783-42-8.

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

Parkatzidis, Kostas published the artcilePhotoinduced Iron-Catalyzed ATRP of Renewable Monomers in Low-Toxicity Solvents: A Greener Approach, Quality Control of 143-24-8, the main research area is photoinduced iron catalyzed ATRP monomer solvent.

Producing polymers from renewable resources via more sustainable approaches has become increasingly important. Herein we present the polymerization of monomers obtained from biobased renewable resources, employing an environmentally friendly photoinduced iron-catalyzed atom transfer radical polymerization (ATRP) in low-toxicity solvents. We demonstrate that renewable monomers can be successfully polymerized into sustainable polymers with controlled mol. weights and narrow molar mass distributions (D as low as 1.17). This is in contrast to reversible addition-fragmentation chain-transfer (RAFT) polymerization, arguably the most commonly employed method to polymerize biobased monomers, which led to poorer mol. weight control and higher dispersities for these specific monomers (Ds ~1.4). The versatility of our approach was further highlighted by the temporal control demonstrated through intermittent “”on/off”” cycles, controlled polymerizations of a variety of monomers and chain lengths, oxygen-tolerance, and high end-group fidelity exemplified by the synthesis of block copolymers. This work highlights photoinduced iron-catalyzed ATRP as a powerful tool for the synthesis of renewable polymers.

ACS Macro Letters published new progress about RAFT polymerization. 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

Makarouni, Dimitra published the artcileSolvent-Driven Selectivity on the One-Step Catalytic Synthesis of Manoyl Oxide Based on a Novel and Sustainable “”Zeolite Catalyst-Solvent”” System, COA of Formula: C10H22O5, the main research area is manoyl oxide preparation zeolite glyme catalyst cyclodehydration sclareol.

Presented is the application of a novel “”zeolite catalyst-solvent”” system for the sustainable one-step synthesis of the terpenoid manoyl oxide I, the potential precursor of forskolin and Ambrox. Manoyl oxide high-yield and large-scale production over a zeolite catalyst has been infeasible so far, while the proposed system results in 90% yields at 135°C and atm. pressure. A substrate-controlled methodol. is used to achieve selectivity. Solvent-driven catalysis was demonstrated, as the activation energy barrier decreases in the presence of appropriate solvents, being 62.7 and 93.46 kJmol-1 for a glyme-type solvent and dodecane, resp. Finally, catalyst acidity was found to be a key parameter for the process.

Catalysis Letters published new progress about Acidity (catalyst). 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

Divya, Madhusoodhanan Lathika published the artcileHighly Reversible Na-Intercalation into Graphite Recovered from Spent Li-Ion Batteries for High-Energy Na-Ion Capacitor, Computed Properties of 143-24-8, the main research area is supercapacitor graphite tetraglyme aging; Graphite; Na-ion capacitor; ether; high-temperature aging; pre-sodiation.

High-performance Na-ion capacitor (NIC) was constructed with graphite recovered from spent Li-ion batteries (LIBs) as battery-type neg. electrode and high-surface-area activated carbon as a supercapacitor component. Unlike Li-insertion into graphite, Na-insertion into graphite is extremely limited; hence, a “”solvent-co-intercalation”” mechanism was proposed for high reversibility using ether family solvents. First, the Na-insertion properties were assessed in the half-cell assembly with 0.5 M NaPF6 in tetraethylene glycol di-Me ether as an electrolyte solution and compared with the com. graphite. The NIC comprised pre-sodiated graphite as a neg. electrode and com. activated carbon as a cathode. This fascinating NIC configuration displayed the maximum energy d. of 59.93 Wh kg-1 with exceptional cyclability of 5000 cycles at ambient temperature with approx. 98% retention. Interestingly, the electrode aging process in the presence of electrolyte resulted in approx. 19% higher energy d. than the routine electrode heat treatment. Further, the electrochem. activity of the NIC at various temperatures was studied, and it was found that the graphite recovered from spent LIBs could be effectively reused towards the construction of high-performance charge storage devices with exceptional performance.

ChemSusChem published new progress about Aging of materials. 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

Dutta, Arghya published the artcileIdentifying the Performance Limiters in High Areal-Capacity Li-Oxygen Battery at Subzero Temperatures, Synthetic Route of 143-24-8, the main research area is lithium oxygen battery subzero temperature.

Li-O2 batteries are found to show severe loss in energy d. at subzero temperatures Here we investigate and deconvolute several temperature dependent parameters of a high areal-capacity Li-O2 battery, and our analyses show that combined effects of electrode kinetics, diffusion of electroactive species in the electrolyte, and charge transport through the electrodes directly influence the temperature dependent average discharge potential of the cell. In contrast, the low capacity of Li-O2 cells at subzero temperatures is found to be the result of charge transport resistance in the Li2O2 layer and the diffusion limitation of electroactive species in the electrolyte.

ACS Applied Energy Materials published new progress about Battery electrodes. 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

Ma, Yirui published the artcileUnderstanding the correlation between lithium dendrite growth and local material properties by machine learning, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium metal battery dendrite growth neural network machine learning.

Lithium metal batteries are attractive for next-generation energy storage because of their high energy d. A major obstacle to their commercialization is the uncontrollable growth of lithium dendrites, which arises from complicated but poorly understood interactions at the electrolyte/electrode interface. In this work, we use a machine learning-based artificial neural network (ANN) model to explore how the lithium growth rate is affected by local material properties, such as surface curvature, ion concentration in the electrolyte, and the lithium growth rates at previous moments. The ion concentration in the electrolyte was acquired by Stimulated Raman Scattering Microscopy, which is often missing in past exptl. data-based modeling. The ANN network reached a high correlation coefficient of 0.8 between predicted and exptl. values. Further sensitivity anal. based on the ANN model demonstrated that the salt concentration and concentration gradient, as well as the prior lithium growth rate, have the highest impacts on the lithium dendrite growth rate at the next moment. This work shows the potential capability of the ANN model to forecast lithium growth rate, and unveil the inner dependency of the lithium dendrite growth rate on various factors.

Journal of the Electrochemical Society published new progress about Battery electrodes. 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

Inoo, Akane published the artcileEffects of Solvation Structures on the Co-intercalation Suppression Ability of the Solid Electrolyte Interphase Formed on Graphite Electrodes, SDS of cas: 143-24-8, the main research area is graphite electrode SEI solvation structure cointercalation suppression ability.

The effect of solvation structures on solvated Li+ migration in a solid electrolyte interphase (SEI) was investigated using glyme-solvated Li+ as probes for co-intercalation reactions. The intercalation of bare Li+ into graphite occurred in the presence of the SEI derived from vinylene carbonate and when Bu Me triglyme was the solvent. Based on the results of d. functional theory calculations, both the size of solvated Li+ and the width of the ionic path of SEIs are crucial to determine whether Li+ is desolvated.

Chemistry Letters published new progress about Battery electrodes. 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

Jozwiak, Malgorzata published the artcileHeat capacity of six glymes in N,N-dimethylformamide + water mixtures. Solvation of glymes, Related Products of ethers-buliding-blocks, the main research area is glymes DMF water mixture solvation heat capacity.

The paper presents the heat capacities of glyme solutions: monoglyme, diglyme, triglyme, tetraglyme, pentaglyme and hexaglyme, in binary solvents N,N-dimethylformamide + water at four temperatures (293.15 K, 298.15 K, 303.15 K, 308.15 K) obtained using differential calorimeter Micro DSC III, Setaram – France. The concentration of glymes was approx. 0.25 mol/kg. On the basis of the obtained exptl. results, the apparent isobaric heat capacities of the glymes were calculated It was noted that the larger the glyme mol. was, the more pronounced the increase in the value of the apparent molar heat capacity function with the increase in water content in the two-component solvent. The observed changes in apparent isobaric heat capacity as a function of the water content in the mixed solvent are discussed in terms of the hydrophobic nature of the glymes. Moreover, it was shown that the apparent molar isobaric heat capacity of the glymes in pure solvents, i.e. in water and in N,N-dimethylformamide, increases linearly with the increase in the number of oxygen atoms in the glyme mols. i.e. with the size of glyme mols. Furthermore, a linear correlation was observed between the apparent isobaric molar heat capacity and the enthalpic effect of the hydrophobic hydration of the studied glymes at 298.15 K. The results obtained in this paper are compare with the same obtained for selected cyclic ethers.

Journal of Molecular Liquids published new progress about Correlation energy. 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