Category: ethers-buliding-blocks

Zhang, Huang published the artcileSolvent-dictated sodium sulfur redox reactions: investigation of carbonate and ether electrolytes, Quality Control of 143-24-8, the main research area is redox reaction carbonate ether electrolyte sodium sulfur ion battery.

Sulfur-based cathode chemistries are essential for the development of high energy d. alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature The solvent is found to play a key role for the electrochem. reactivity of the sulfur cathode in sodium-sulfur (Na-S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochem. reversibility. On the other hand, an irreversible solution-phase reaction is observed in carbonate solvents. This study clearly reveals the solvent-dependent Na-S reaction pathways in room temperature Na-S batteries and provides an insight into realizing their high energy potential, via electrolyte formulation design.

Energies (Basel, Switzerland) 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, Quality Control of 143-24-8.

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

Hu, Anjun published the artcileImproved Cyclability of Lithium-Oxygen Batteries by Synergistic Catalytic Effects of Two-Dimensional MoS2 Nanosheets Anchored on Hollow Carbon Spheres, Application In Synthesis of 143-24-8, the main research area is lithium oxygen battery composite catalyst molybdenum disulfide; hollow carbon sphere synergistic effect.

The design and development of high-efficient electrocatalysts plays a decisive role in improving the stability of lithium-oxygen (Li-O2) batteries. Here, two-dimensional (2D) MoS2 nanosheets anchored on hollow carbon spheres (MoS2/HCS) composites is designed and reported as promising cathode catalysts for Li-O2 batteries. The MoS2/HCS-based Li-O2 battery shows superior electrochem. performance, in terms of high capacity (4010 mA h g-1) and enhanced cycling performance (104 cycles). XPS results reveal that the formation of Li2CO3 and other side products can be effectively alleviated when MoS2/HCS electrode is used as the cathode. On the basis of exptl. studies, it is found that the synergistic effects, which originated from the superior catalytic property of MoS2 nanosheets and the good elec. conductivity of HCS with high surface area, is the main reason for performance improvement. The synergistic effects induced by the dispersed MoS2 nanosheets anchored on nanostructured HCS cathodes provide a promising strategy for developing catalysts of O2 electrode for Li-O2 batteries with excellent performance.

ACS Sustainable Chemistry & Engineering 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, Application In Synthesis of 143-24-8.

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

Zhao, Guangyu published the artcileCapacitive Behavior Based on the Ultrafast Mass Transport in a Self-Supported Lithium Oxygen Battery Cathode, Category: ethers-buliding-blocks, the main research area is lithium oxygen battery cathode wood derived substrate; metal organic framework derivate capacitive behavior.

The pore structures of lithium oxygen battery cathodes play a significant role in their reversibility and lifespan by deciding the mass transport in cathodes. In the present work, a porous Co3O4/C modified wood-derived slice is used as self-supported lithium oxygen battery cathode. The straight tubes in vertical and horizontal directions inherited from wood vessels afford the cathodes facilitated paths for gas and ion transport, resp. Furthermore, the homogeneous distribution of mesoporous Co3O4/C polyhedrons on tube wall of wood-derived substrates creates a uniform reaction interface in the cathodes. The ultrafast mass transport and uniform reaction interface lead to a capacitive contribution in battery capacity, owing to the fast kinetics that is free from the semi-infinite diffusion control. Accordingly, these merits enable the cathodes to have good reversibility and cyclability. The batteries can cycle more than 380 rounds without obvious overpotential variation at a c.d. of 1.0 mA cm-2 within a capacity limitation of 1.0 mAh cm-2.

ACS Applied Energy Materials 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, Category: ethers-buliding-blocks.

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

Mushtaq, Muhammad published the artcileComposite Cathode Architecture with Improved Oxidation Kinetics in Polymer-Based Li-O2 Batteries, Synthetic Route of 143-24-8, the main research area is cathode oxidation kinetics polymer electrolyte lithium ion battery safety; composite cathode lithium ion battery oxidation kinetics; Li−oxygen battery; composite cathode; hexamethylphosphoramide; oxidation kinetics; polymer electrolyte.

The Li-O2 battery based on the polymer electrolyte has been considered as the feasible solution to the safety issue derived from the liquid electrolyte. However, the practical application of the polymer electrolyte-based Li-O2 battery is impeded by the poor cyclability and unsatisfactory energy efficiency caused by the structure of the porous cathode. Herein, an architecture of a composite cathode with improved oxidation kinetics of discharge products was designed by an in situ method through the polymerization of the electrolyte precursor for the polymer-based Li-O2 battery. The composite cathode can provide sufficient gas diffusion channels, abundant reaction active sites, and continuous pathways for ion diffusion and electron transport. Furthermore, the oxidation kinetics of nanosized discharge products formed in the composite cathode can be improved by hexamethylphosphoramide during the recharge process. The polymer-based Li-O2 batteries with the composite cathode demonstrate highly reversible capacity when fully charged and a long cycle lifetime under a fixed capacity with low overpotentials. Moreover, the interface contact between hexamethylphosphoramide and the Li metal can be stabilized simultaneously. Therefore, the composite cathode architecture designed in this work shows a promising application in high-performance polymer-based Li-O2 batteries.

ACS Applied Materials & Interfaces 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, Synthetic Route of 143-24-8.

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

Zhou, Xuan published the artcileEvaluation of Computational Chemistry Methods for Predicting Redox Potentials of Quinone-Based Cathodes for Li-Ion Batteries, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is quinone cathode lithium ion battery redox potential computational chem.

High-throughput computational screening (HTCS) is an effective tool to accelerate the discovery of active materials for Li-ion batteries. For the evaluation of organic cathode materials, the effectiveness of HTCS depends on the accuracy of the employed chem. descriptors and their computing cost. This work was focused on evaluating the performance of computational chem. methods, including semi-empirical quantum mechanics (SEQM), d.-functional tight-binding (DFTB), and d. functional theory (DFT), for the prediction of the redox potentials of quinone-based cathode materials for Li-ion batteries. In addition, we evaluated the accuracy of three energy-related descriptors: (1) the redox reaction energy, (2) the LUMO (LUMO) energy of reactant mols., and (3) the HOMO (HOMO) energy of lithiated product mols. Among them, the LUMO energy of the reactant compounds, regardless of the level of theory used for its calculation, showed the best performance as a descriptor for the prediction of exptl. redox potentials. This finding contrasts with our earlier results on the calculation of quinone redox potentials in aqueous media for redox flow batteries, for which the redox reaction energy was the best descriptor. Furthermore, the combination of geometry optimization using low-level methods (e.g., SEQM or DFTB) followed by energy calculation with DFT yielded accuracy as good as the full optimization of geometry using the DFT calculations Thus, the proposed calculation scheme is useful for both the optimum use of computational resources and the systematic generation of robust calculation data on quinone-based cathode compounds for the training of data-driven material discovery models.

Batteries (Basel, Switzerland) 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, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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

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

Taglang, Celine published the artcileEnantiospecific C-H activation using ruthenium nanocatalysts, Formula: C4H12ClNO, the publication is Angewandte Chemie, International Edition (2015), 54(36), 10474-10477, database is CAplus and MEDLINE.

The activation of C-H bonds has revolutionized modern synthetic chem. However, no general strategy for enantiospecific C-H activation has been developed to date. We herein report an enantiospecific C-H activation reaction followed by deuterium incorporation at stereogenic centers. Mechanistic studies suggest that the selectivity for the α-position of the directing heteroatom results from a four-membered dimetallacycle as the key intermediate. This work paves the way to novel mol. chem. on nanoparticles.

Angewandte Chemie, International Edition published new progress about 1162054-86-5. 1162054-86-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic Chain, name is (S)-1-Methoxypropan-2-amine hydrochloride, and the molecular formula is C18H10F3NO3S2, Formula: C4H12ClNO.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Sangjan, Worasit published the artcileIdentification of volatile biomarkers for high-throughput sensing of soft rot and Pythium leak diseases in stored potatoes, Recommanded Product: 1,2-Dimethoxybenzene, the publication is Food Chemistry (2022), 130910, database is CAplus and MEDLINE.

Soft rot and Pythium leak are postharvest storage diseases of potato tubers that can cause substantial crop losses in the US. This study focused on detecting volatile organic compounds (VOCs) associated with rot inoculated tubers during storage (up to 21 days) using headspace solid-phase microextraction (SPME) coupled to gas chromatog. (GC) with mass spectrometry (MS) and flame ionization detector (FID) anal. Russet Burbank and Ranger Russet tubers were inoculated with the rot pathogens. Static sampling with 50 min trapping time followed by GC-MS and GC-FID anal. identified 23 and 30 common VOCs from the pathogen inoculated tubers. Overall, n,n-dimethylmethylamine, acetone, 1-undecene, and styrene, occurred frequently and repeatability in inoculated samples based on GC-MS anal., with the latter two found using GC-FID anal. as well. Identification of such biomarkers can be useful in developing high-throughput VOC sensing systems for early disease detection in potato storage facilities.

Food Chemistry published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,2-Dimethoxybenzene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Bury, Ross W. published the artcileInteractions between local anesthetics and spasmogens on the guinea-pig ileum, Safety of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, the publication is Journal of Pharmacology and Experimental Therapeutics (1976), 197(3), 633-40, database is CAplus and MEDLINE.

The effect of various local anesthetics and other substances known to modify Ca fluxes in cells, on submax. responses of guinea pig ileum to substance P [33507-63-0], acetylcholine, histamine, and BaCl2 was determined Procaine-HCl [51-05-8] caused a dose-related depression of the response to all the agonists but the response to substance P was far less susceptible to this depression. Lidocaine-HCl [73-78-9], bupivacaine-HCl [18010-40-7], pramoxine-HCl [637-58-1] and W 6211 [22759-46-2] also caused a lower degree of attenuation of the response to substance P than the responses to acetylcholine, histamine, and BaCl2. Verapamil [52-53-9] caused a dose-related depression of responses to all the agonists equally. The use of Ca-free solutions abolished responses to substance P, acetylcholine, and histamine. The response to BaCl2 was less affected by Ca withdrawal but was reduced markedly. In the presence of 10 mM LaCl, the response to all the agonists was abolished. The relative resistance of the substance P responses to antagonism by local anesthetics suggests that different and more efficient channels for Ca entry into the smooth muscle cell are involved.

Journal of Pharmacology and Experimental Therapeutics published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C17H28ClNO3, Safety of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem