Tag: M.W=200-250

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

Leick, Noemi published the artcileThermal stability and structural studies on the mixtures of Mg(BH4)2 and glymes, Computed Properties of 143-24-8, the main research area is magnesium borohydride glyme mixture thermal stability.

Coordination complexes of Mg(BH4)2 are of interest for energy storage, ranging from hydrogen storage in BH4 to electrochem. storage in Mg based batteries. Understanding the stability of these complexes is crucial since storage materials are expected to undergo multiple charging and discharging cycles. To do so, we examined the thermal stabilities of the 1 : 1 mixtures of Mg(BH4)2 with different glymes by DSC-TGA, TPD-MS and powder XRD anal. Despite their structural similarities, these mixtures show diverse phase transitions, speciations and decomposition pathways as a function of linker length.

Dalton Transactions published new progress about Crystallinity. 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

Li, Chao-Le published the artcileA Low-Volatile and Durable Deep Eutectic Electrolyte for High-Performance Lithium-Oxygen Battery, Related Products of ethers-buliding-blocks, the main research area is low volatile durable deep eutectic electrolyte high performance lithium.

The lithium-oxygen battery (LOB) with a high theor. energy d. (~3500 Wh kg-1) has been regarded as a strong competitor for next-generation energy storage systems. However, its performance is still far from satisfactory due to the lack of stable electrolyte that can simultaneously withstand the strong oxidizing environment during battery operation, evaporation by the semiopen feature, and high reactivity of lithium metal anode. Here, we have developed a deep eutectic electrolyte (DEE) that can fulfill all the requirements to enable the long-term operation of LOBs by just simply mixing solid N-methylacetamide (NMA) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) at a certain ratio. The unique interaction of the polar groups in the NMA with the cations and anions in the LiTFSI enables DEE formation, and this NMA-based DEE possesses high ionic conductivity, good thermal, chem., and electrochem. stability, and good compatibility with the lithium metal anode. As a result, the LOBs with the NMA-based DEE present a high discharge capacity (8647 mAh g-1), excellent rate performance, and superb cycling lifetime (280 cycles). The introduction of DEE into LOBs will inject new vitality into the design of electrolytes and promote the development of high-performance LOBs.

Journal of the American Chemical Society published new progress about Crystallinity. 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

Yen, Hao-Chi published the artcileModulation of the Hydrophilicity on Asymmetric Side Chains of Isoindigo-Based Polymers for Improving Carrier Mobility-Stretchability Properties, Related Products of ethers-buliding-blocks, the main research area is hydrophilicity isoindigo polymer carrier mobility stretchability.

To realize high-performance and intrinsically stretchable materials for field-effect transistor (FET) devices, a plethora of approaches about structure design were explored. Herein, we report a new approach to control the carrier mobility-stretchability properties of the polymers by tuning the hydrophilicity and asym. side-chain combination. A series of isoindigo-bithiophene (II2T)-based semiconducting polymers with three kinds of side chains including carbosilane side chain, semifluorinated side chain, and oligoether side chain were synthesized for investigating the structure-mobility and structure-stretchability relationships. The mol. stacking pattern and orientation of the derived polymers could be controlled by altering the hydrophilicity and asym. side-chain combination. The side chains of carbosilane and oligoether and a semifluorinated side chain could provide an order edge-on stacking, conformability and backbone aggregation, and an irregular solid-state aggregation, resp. Among them, P(Si-O) with oligoether and a carbosilane side chain exhibited an enhanced μh of 0.56 cm2 V-1 s-1, edge-on stacking, and aggregation behavior owing to the favorable intermol. interaction between the oligoether side chain and the asym. side chain to mitigate the steric hindrance. Also, P(Si-O) possessed a remarkable stretchability of (92%,⊥, 82%,‖) orthogonal μh retention under 100% strain and almost unchanged μh was observed after 1000 stretching-releasing cycles at 60% strain. The exptl. results suggested that the combination and hydrophilicity of side chain played a pivotal role in developing semiconducting polymers with a high performance and an intrinsic stretchability.

Macromolecules (Washington, DC, United States) published new progress about Crystallinity. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Related Products of ethers-buliding-blocks.

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

Guan, Khor Hock published the artcileInfluence of tetraglyme towards magnesium salt dissociation in solid polymer electrolyte for electric double layer capacitor, Quality Control of 143-24-8, the main research area is solid polymer electrolyte tetraglyme magnesium elec double layer capacitor.

Most of commercialized elec. double layer capacitors (EDLCs) with liquid electrolyte are bulky, non-flexible and unsafe which require solid polymer electrolyte (SPE) as the replacement. Herein, SPE containing tetraglyme as the ionic conductivity booster was prepared in which polyvinyl alc. (PVA), magnesium trifluoromethane sulfonate (Mg (Tf)2) and tetraglyme (TEDGME) have been utilized as the host polymer, salt and additive, resp. After the addition of TEDGME, the SPE exhibited a significant boost in ionic conductivity from 1.43 x 10-9 to 3.10 x 10-5 S cm-1. This is attributed to the presence of multiple ether oxygen atom functional group from TEDGME that provides more charge carriers. Fourier transform IR spectroscopy authenticates the formation of complex within the SPE systems which indicates the formation of good interaction between the host polymer and the salts. X-ray diffraction anal. demonstrates the reduction in crystallinity of the SPE after the addition of TEDGME which is beneficial for the ion diffusion. The maximum specific capacitance achieved by the EDLC employing the SPE incorporated with TEDGME is 6.34 F/g at 0.04 A/g, with the rate capability of 74.1%.

Journal of Polymer Research published new progress about Crystallinity. 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

Sakamoto, Shuhei published the artcileElectrochemical properties of lithium air secondary batteries incorporating manganese salen complex as soluble catalyst for nonaqueous electrolyte solutions, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium air secondary battery manganese salen complex electrochem property.

Manganese-containing salen-type complexes of (R,R)-(-)-N,N’-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminomanganese(III) chloride (MnSl) were examined as a novel soluble catalyst in nonaqueous electrolyte solutions for lithium air secondary batteries (LABs). The LAB cells with MnSl exhibited a larger first discharge capacity and better cycle performance (893 mAh g-1, 738 mAh g-1 up to 10 cycles) than those without MnSl. Attenuated total reflection Fourier transform IR spectroscopy (ATR-FTIR) conducted during the discharge/charge cycle showed deposition and decomposition of the discharge product, Li2O2, on the surface of the air electrode. Cyclic voltammetry results suggested that MnSl promotes the oxygen reduction reaction and oxygen evolution reaction because of its high reactivity with O2.

Electrochemistry (Tokyo, Japan) published new progress about Decomposition. 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

Inomata, Koya published the artcileRuthenium-catalyzed selective hydrosilylation reaction of allyl-functionalized PEG derivatives, Formula: C9H20O5, the main research area is polyethylene glycol allyl ether derivative ruthenium catalyzed selective hydrosilylation.

Reactions of allyl-functionalized poly(ethylene glycol) (PEG) derivatives with alkoxysilanes proceeded efficiently to furnish the corresponding hydrosilylated products in good to excellent yields using a ruthenium catalyst, [RuCl2(nbd)]n. A preliminary mechanistic study supported the pivotal role of the PEG moiety, which coordinated to the ruthenium atom during the reaction to achieve high reaction selectivity. This method may be applicable to the synthesis of various PEGs with a silyl terminus, which is useful as biocompatible and low toxic silane coupling agents.

Tetrahedron Letters published new progress about Hydrogenation. 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

Barghamadi, Marzieh published the artcileIn situ synchrotron XRD and sXAS studies on Li-S batteries with ionic-liquid and organic electrolytes, Product Details of C10H22O5, the main research area is Lithium sulfur batteries ionic liquid electrolytes.

Lithium-sulfur (Li-S) batteries are a promising technol. capable of reaching high energy d. of 500-700 Wh kg-1, however the practically achievable performance is still lower than this value. This hindrance can be attributed to a lack of understanding of the fundamental electrochem. processes during Li-S battery cycling, in particular the so-called redox shuttle effect which is due to the relatively high solubility of polysulfide intermediates in the electrolyte. Herein, the effects of LiNO3 as an additive as well as C4mpyr-based ionic liquids (ILs) in electrolyte formulations for Li-S cells are analyzed using in situ X-ray powder diffraction (XRD) and ex situ soft X-ray absorption spectroscopy (sXAS) techniques. While LiNO3 is known for its protective properties on the lithium anode in Li-S cells, our studies have provided further evidence for suppression of Li2S deposition when using LiNO3 as an additive, as well as affecting the solid electrolyte interphase (SEI) layer at a mol. level. Moreover, the detected sulfur species on the surface of the anode and cathode, after a few cycles are compared for IL and organic-based electrolytes.

Journal of the Electrochemical Society published new progress about Ionic liquids. 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