Month: December 2022

Kucuk, Asuman Celik published the artcileInfluence of LiBOB as an electrolyte additive on the performance of BiF3/C for fluoride shuttle batteries, HPLC of Formula: 143-24-8, the main research area is bismuth fluoride carbon film battery electrolyte ionic conductivity.

The potential effects of using lithium bis(oxalato)borate (LiBOB) as an electrolyte additive on the redox reactions of the pos. bismuth fluoride (BiF3) electrode were investigated in tetraglyme (G4) containing the anion acceptor (AA) triphenylboroxin (TPhBX). The electrolyte system, containing 0.06 M LiBOB, 0.5 M TPhBX, and saturated cesium fluoride (CsF) was prepared The study also included a comparison with previously studied systems based on G4, which did not contain LiBOB but AA. The tolerances to reduction and oxidation were enhanced after introducing LiBOB to the system. The capacity of BiF3 improved at C/10 rate. Defluorination of BiF3 was demonstrated to proceed through a direct desorption-insertion mechanism, whereas the contribution of the dissolution-deposition mechanism was known to be predominant in the G4-based systems. Addition of only 1 weight/weight% LiBOB to the G4 system resulted in an interesting change in the mechanism and an improvement in the capacity at high C rate. This improvement was associated with the increasing electrochem. stability of the electrolyte due to the interaction between BOB- and Cs+, reducing the possibilities of electrolyte degradation and loss of active material owing to a direct desorption-insertion mechanism.

Journal of the Electrochemical Society published new progress about Batteries. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, HPLC of Formula: 143-24-8.

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

Kitaura, Hirokazu published the artcileAn ultrafast process for the fabrication of a Li metal-inorganic solid electrolyte interface, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium metal inorganic solid electrolyte fabrication ultrafast.

A lithium anode is expected to be applied to next-generation batteries using inorganic solid electrolytes (ISEs). When joining Li with ISEs, interfacial reactions often cause performance degradation and have been avoided. In this report, we demonstrate a new strategy for the ultrafast formation of a good interface between Li and ISEs, using a reactive process (ultrasonic-assisted fusion welding method). We found that ultrasonic irradiation helps in suitable interface formation between molten Li and ISEs, and the joining process finishes in just a few seconds. The obtained interface showed a low resistance and could be used under a high c.d. of 0.5 mA cm-2. The development of prototype cells for next-generation batteries was promoted by this ultrafast process.

Energy & Environmental Science published new progress about Batteries. 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

Huang, Kai published the artcileSystematic Optimization of High-Energy-Density Li-Se Semi-Solid Flow Battery, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is tetraethylene glycol dimethyl ether lithium selenium energy density optimization.

Redox flow batteries (RFBs) are still unable to be applied in more fields due to their low energy d. This work proposes a high-energy-d. Li-Se semi-solid flow battery (SSFB), and improves its performance through an optimization process. The effect of composite synthesis, current collector types, and electrolyte solvent types are systematically studied. The method of impregnating Se and Ketjen black (KB) directly according to their proportion in the suspension as a composite without adding addnl. KB can not only effectively improve the stability and utilization of suspension, but also greatly reduce its viscosity. Carbon paper is used as the current collector to improve the performance of the system by its smaller contact resistance. The selected solvent of tetraethylene glycol di-Me ether (TEGDME) has smaller volatility and a larger contact angle, which contributes to the formation of a stable and uniform suspension. After optimization, the demonstrated system has achieved a volumetric capacity of 156-386 Ah L-1 with high Coulombic efficiency (≈100%) for 100 cycles. Finally, the intermittent-flow mode test has confirmed the applicability of the system. This research provides a reference for the practical application of SSFBs and a direction for the optimization of other types of suspensions.

Energy Technology (Weinheim, Germany) published new progress about Batteries. 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

Tripathi, Balram published the artcileBiFeO3 Coupled Polysulfide Trapping in C/S Composite Cathode Material for Li-S Batteries as Large Efficiency and High Rate Performance, Category: ethers-buliding-blocks, the main research area is carbon sulfur composite; bismuth iron oxide polysulfide composite cathode lithium sulfur battery.

We demonstrated the efficient coupling of BiFeO3 (BFO) ferroelec. material within the carbon-sulfur (C-S) composite cathode, where polysulfides are trapped in BFO mesh, reducing the polysulfide shuttle impact, and thus resulting in an improved cyclic performance and an increase in capacity in Li-S batteries. Here, the built-in internal field due to BFO enhances polysulfide trapping. The observation of a difference in the diffusion behavior of polysulfides in BFO-coupled composites suggests more efficient trapping in BFO-modified C-S electrodes compared to pristine C-S composite cathodes. The X-ray diffraction results of BFO-C-S composite cathodes show an orthorhombic structure, while Raman spectra substantiate efficient coupling of BFO in C-S composites, in agreement with SEM images, showing the interconnected network of submicron-size sulfur composites. Two plateaus were observed at 1.75 V and 2.1 V in the charge/discharge characteristics of BFO-C-S composite cathodes. The observed capacity of ∼1600 mAh g-1 in a 1.5-2.5 V operating window for BFO30-C10-S60 composite cathodes, and the high cyclic stability substantiate the superior performance of the designed cathode materials due to the efficient reduction in the polysulfide shuttle effect in these composite cathodes.

Energies (Basel, Switzerland) published new progress about Batteries. 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

Berac, Christian M. published the artcileEvaluation of charge-regulated supramolecular copolymerization to tune the time scale for oxidative disassembly of β-sheet comonomers, Computed Properties of 23783-42-8, the main research area is peptide solid phase synthesis self Click chem assembly nanorod; nanorod peptide polymer beta sheet charge TEM CD; supramol structure peptide dendrimer nanorod oxidation disassembly kinetics; kinetic control; multicomponent supramolecular polymers; reactive oxygen species responsive materials; redox regulation; supramolecular chemistry.

A multistimuli-responsive supramol. copolymerization is reported. The copolymerization is driven by hydrogen bond encoded β-sheet-based charge co-assembly into 1D nanorods in water, using glutamic acid or lysine residues in either of the peptide comonomers. The incorporation of methionine as hydrophobic amino acid supports β-sheet formation, but oxidation of the thioether side-chain to a sulfoxide functional group destabilizes the β-sheet ordered domains and induces disassembly of the supramol. polymers. Using H2O2 as reactive oxygen species, the time scale and kinetics of the oxidative disassembly are probed. Compared to the charge neutral homopolymers, it is found that the oxidative disassembly of the charged ampholytic copolymers is up to two times faster and is operative at neutral pH. The strategy is therefore an important addition to the growing field of amphiphilic polythioether containing (macro)mol. building blocks, particularly in view of tuning their oxidation induced disassembly which tends to be notoriously slow and requires high concentrations of reactive oxygen species or acidic reaction media.

Macromolecular Rapid Communications published new progress about Azidation. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Computed Properties of 23783-42-8.

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

Byrne, Stephen A. published the artcileLate-stage modification of peptides and proteins at cysteine with diaryliodonium salts, Formula: C9H20O5, the main research area is cysteine diaryliodonium salt peptide protein modification.

The modification of peptides and proteins has emerged as a powerful means to efficiently prepare high value bioconjugates for a range of applications in chem. biol. and for the development of next-generation therapeutics. Herein, we report a novel method for the chemoselective late-stage modification of peptides and proteins at cysteine in aqueous buffer with suitably functionalised diaryliodonium salts, furnishing stable thioether-linked synthetic conjugates. The power of this new platform is showcased through the late-stage modification of the affibody zEGFR and the histone protein H2A.

Chemical Science published new progress about Arylation. 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

Wang, Junbo published the artcileIn situ growth of Co3O4 on nitrogen-doped hollow carbon nanospheres as air electrode for lithium-air batteries, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is inSitu growth cobalt oxide nitrogen doped hollow carbon nanosphere; air electrode lithium battery.

Design and synthesis of efficient bifunctional electrocatalysts for both O reduction reaction and O evolution reactions are of great significant for metal-air batteries. Here, bifunctional catalysts consisting of Co3O4 nanocrystals and N-doped hollow C nanospheres are synthesized through in situ growth of Co3O4 nanocrystals on the surface of N-doped hollow C nanospheres. The observed Co-N bond formation is an indication of the nucleation of Co3O4 nanocrystals starting from N-sites in N-doped hollow C nanospheres. The resulted hybrids exhibit improved activity towards O reduction reaction compared to pristine N-doped hollow C nanospheres in terms of the 42 mV pos. shift of half-wave potential and comparable activity towards O evolution reactions with com. RuO2 and IrO2 catalysts. The thus-assembled Li-O battery delivers an initial discharge capacity of 3325 mAh/g at 100 mA/g using mixed gas of O and Ar (20% of O in volume). The battery fails after 27 discharge/charge cycles due to the accumulation of discharge products on electrode.

Journal of Alloys and Compounds published new progress about Annealing. 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

Xue, Hairong published the artcileHollow mesoporous Fe2O3 nanospindles/CNTs composite: an efficient catalyst for high-performance Li-O2 batteries, COA of Formula: C10H22O5, the main research area is iron oxide carbon nanotube composite hydrolysis; Li-O2 batteries; carbon support; cathodic catalyst; hollow mesoporous structure; transition metal oxides.

The design of mesoporous or hollow transition metal oxide/carbon hybrid catalysts is very important for rechargeable Li-O2 batteries. Here, spindle-like Fe2O3 with hollow mesoporous structure on CNTs backbones (Fe2O3-HMNS@CNT) are prepared by a facile hydrolysis process combined with low temperature calcination. Within this hybrid structure, the hollow interior and mesoporous shell of the Fe2O3 nanospindles provide high sp. surface area and abundant catalytical active sites, which is also beneficial to facilitating the electrolyte infiltration and oxygen diffusion. Furthermore, the crisscrossed CNTs form a three-dimensional (3D) conductive network to accelerate and stabilize the electron transport, which leads to the decreasing internal resistance of electrode. As a cathodic catalyst for Li-O2 batteries, the Fe2O3-HMNS@CNT composite exhibits high specific capacity and excellent cycling stability (more than 100 cycles).

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Annealing. 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

Morimoto, Koji published the artcileCyclic Hypervalent Iodine-Induced Oxidative Phenol and Aniline Couplings with Phenothiazines, Safety of 4-Hydroxy-3-tert-butylanisole, the main research area is phenothiazineyl phenol chemoselective preparation; phenol phenothiazine cross coupling cyclic hypervalent iodine induced; amine phenothiazinyl chemoselective preparation; phenothiazine aryl amine cross coupling cyclic hypervalent iodine induced.

In this study, cyclic hypervalent iodine-induced metal-free cross-dehydrogenative coupling of phenols/amines with phenothiazines to afford (10H-phenothiazinyl)phenols I [R = 4,5-dimethoxy-2-phenolyl, 6-Br-4-OMe-2-phenolyl, 4-naphthalenolyl, etc.; R1 = H, OMe, Cl, CF3; X = O,S] and (10H-phenothiazinyl)amines II [R2 = N,N-diethyl-4-aniline, N,N-dimethyl-4-aniline, N-ethyl-2-methyl-4-aniline, etc.; R3 = H, Me, Cl, etc.; Y = O,S] was reported. This method afforded selective amination products I and II under mild conditions and in moderate-to-high yields. Aniline amination proceeded efficiently at 20°C, a previously unreported phenomenon.

Organic Letters published new progress about Amination. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Safety of 4-Hydroxy-3-tert-butylanisole.

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

Bogolubsky, Andrey V. published the artcileAn Old Story in the Parallel Synthesis World: An Approach to Hydantoin Libraries, Safety of (2-Chloroethoxy)benzene, the main research area is hydantoin compound combinatorial synthesis Aurora kinase A inhibitor; 2,2,2-trifluoroethylcarbamates; amino esters; condensation; kinase inhibitors; nitrogen heterocycles.

An approach to the parallel synthesis of hydantoin libraries by reaction of in situ generated 2,2,2-trifluoroethylcarbamates and α-amino esters was developed. To demonstrate utility of the method, a library of 1158 hydantoins designed according to the lead-likeness criteria (MW 200-350, cLogP 1-3) was prepared The success rate of the method was analyzed as a function of physicochem. parameters of the products, and it was found that the method can be considered as a tool for lead-oriented synthesis. A hydantoin-bearing submicromolar primary hit acting as an Aurora kinase A inhibitor was discovered with a combination of rational design, parallel synthesis using the procedures developed, in silico and in vitro screenings.

ACS Combinatorial Science published new progress about Amidation. 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Safety of (2-Chloroethoxy)benzene.

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