Category: 143-24-8

Kosir, Urban published the artcilePolysulfide species in various electrolytes of Li-S batteries – a chromatographic investigation, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is polysulfide species various electrolyte lithium sulfur batteries chromatog.

The HPLC method including derivatization was used for the determination of polysulfide species concentration during the operation of Li-S battery cells. A comparison was made between a glyme based electrolyte, which exhibits high polysulfide solubility, and a fluorinated ether based electrolyte, which probably reduces the dissolution and diffusion of polysulfides. A sep. anal. was conducted on porous C cathodes and separators obtained from cycled battery cells. The determination of the species concentration trends allowed a deeper understanding of the differences in battery cell operating mechanism. Polysulfide species are formed in similar concentrations in both examined electrolytes, but they remain trapped in the cathode pores in the fluorinated ether based electrolyte Li-S battery cells. The polysulfide concentration in the separators of the fluorinated ether cells was below the limit of detection, which indicates that the solubilities of polysulfides in the fluorinated electrolyte are <50μM. This results in absence of disproportionation or coproportionation reactions between the polysulfide species in solution This different mechanism influences the change in length and potential of the voltage plateaus of the battery cells during galvanostatic cycling. Electrochimica Acta published new progress about Battery electrolytes. 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

Nakanishi, Azusa published the artcileSulfolane-Based Highly Concentrated Electrolytes of Lithium Bis(trifluoromethanesulfonyl)amide: Ionic Transport, Li-Ion Coordination, and Li-S Battery Performance, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is sulfolane concentrated electrolyte lithium trifluoromethanesulfonylamide ionic conductivity sulfur battery.

Following the recent study demonstrating predominant Li-ion hopping conduction in sulfolane (SL)-based highly concentrated electrolytes with LiBF4, LiClO4, and lithium bis(fluorosulfonyl)amide, herein a systematic study on transport properties and Li-ion coordination of SL-based electrolytes with lithium bis(trifluoromethanesulfonyl)amide was performed. In the highly concentrated region, Li ions clearly diffuse faster than SL and TFSA anions. The two oxygen atoms of the SL sulfonyl group tend to coordinate to two different neighboring Li ions and TFSA anions form ionic clusters with Li ions, verifying the previous observation of the unusual Li-ion conduction and its relevance to the SL- and anion-bridged, chainlike Li-ion coordination structure for the SL-based concentrated systems with other Li salts. Also, addition of hydrofluoroether (HFE) to the SL-based concentrated electrolytes greatly enhances diffusion coefficients but fragments the chainlike Li-ion coordination to smaller clusters, leading to a reduced contribution of Li-ion hopping to the overall Li-ion conduction. The SL-based concentrated electrolyte and its mixtures with HFE showed lower lithium polysulfide solubility and higher rate capability for lithium-sulfur (Li-S) cells compared with previously reported tetraglyme-based electrolytes. The SL-based electrolytes manifest a significant improvement in Li-ion mass transfer as a sparingly solvating electrolyte, enabling the solid-state sulfur redox reactions in high-performance Li-S batteries.

Journal of Physical Chemistry C published new progress about Battery electrolytes. 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

Fujihira, Yamato published the artcilePentafluoroethylation of Carbonyl Compounds by HFC-125 via the Encapsulation of the K Cation with Glymes, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is pentafluoroethylation carbonyl compound HFC 125 encapsulation potassium cation glyme.

A simple protocol to overcome the explosive pentafluoroethylation of carbonyl compounds by HFC-125 is described. The use of potassium (K) bases with triglyme or tetraglyme as a solvent safely yields the pentafluoroethylation products in good to high yields. The exptl. results suggest that an encapsulation of the K cation by glymes as K(glyme)2 inhibits the contact between the K cation and the reactive anionic pentafluoroethyl counterion, preventing their transformation into KF and explosive tetrafluoroethylene (TFE). The generation of sterically demanding [K(G3)2]+ and [K(G4)2]+ is an effective way as an unstable pentafluoroethyl anion reservoir.

Journal of Organic Chemistry published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Konishi, Hiroaki published the artcileInfluence of Electrolyte Composition on the Electrochemical Reaction Mechanism of Bismuth Fluoride Electrode in Fluoride Shuttle Battery, Product Details of C10H22O5, the main research area is fluoride shuttle battery bismuth fluoride electrode electrolyte composition.

Fluoride shuttle battery (FSB) is a promising next-generation battery candidate. In the FSB, metal fluoride and organic solvent containing supporting electrolyte salt and anion acceptor were used as active material and electrolyte. In this study, using bis[2-(2-methoxyethoxy)ethyl] ether (tetraglyme: G4) containing cesium fluoride (CsF; 0.45 mol dm-3 or saturated) and triphenylboroxine (TPhBX; 0.50 mol dm-3) as electrolyte (CsF(0.45)-TPhBX(0.50)-G4 and CsF(saturate)-TPhBX(0.50)-G4), the electrochem. performance of bismuth fluoride (BiF3) was assessed. Although the discharge and charge reactions of BiF3 electrode proceeded in both electrolytes, the cycling performance of BiF3 electrode in CsF(0.45)-TPhBX(0.50)-G4 was poorer than that in CsF(saturate)-TPhBX(0.50)-G4. The cause of differences in the electrochem. properties was investigated using at. absorption spectrometry (AAS), XPS, and cross-sectional SEM (SEM)/energy dispersive X-ray spectroscopy (EDX). The AAS results indicate that the poor cycling performance with CsF(0.45)-TPhBX(0.50)-G4 was due to the dissolution of active material during charging. The XPS and cross-sectional SEM/EDX results indicate that the formation state of Bi, and the progress of electrolyte decomposition during discharging were affected by the CsF/TPhBX ratio in the electrolyte.

Journal of Physical Chemistry C published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Wang, Miaomiao published the artcileSuspect Screening and Chemical Profile Analysis of Storm-Water Runoff Following 2017 Wildfires in Northern California, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is storm water wildfire suspect screening California; Emerging contaminants of concern; Nontargeted analysis; Organic contaminants; Storm-water runoff; Wildfire-impacted.

The combustion of structures and household materials as well as firefighting during wildfires lead to releases of potentially hazardous chems. directly into the landscape. Subsequent storm-water runoff events can transport wildfire-related contaminants to downstream receiving waters, where they may pose water quality concerns. To evaluate the environmental hazards of northern California fires on the types of contaminants in storm water discharging to San Francisco Bay and the coastal marine environment, we analyzed storm water collected after the northern California wildfires (Oct. 2017) using a nontargeted anal. (NTA) approach. Liquid chromatog. quadrupole time-of-flight mass spectrometric anal. was completed on storm-water samples (n = 20) collected from Napa County (impacted by the Atlas and Nuns fires), the city of Santa Rosa, and Sonoma County (Nuns and Tubbs fires) during storm events that occurred in Nov. 2017 and Jan. 2018. The NTA approach enabled us to establish profiles of contaminants based on peak intensities and chem. categories found in the storm-water samples and to prioritize significant chems. within these profiles possibly attributed to the wildfire. The results demonstrated the presence of a wide range of contaminants in the storm water, including surfactants, per- and polyfluoroalkyl substances, and chems. from consumer and personal care products. Homologs of polyethylene glycol were found to be the major contributor to the contaminants, followed by other widely used surfactants. Nonylphenol ethoxylates, typically used as surfactants, were detected and were much higher in samples collected after Storm Event 1 relative to Storm Event 2. The present study provides a comprehensive approach for examining wildfire-impacted storm-water contamination of related contaminants, of which we found many with potential ecol. risk.

Environmental Toxicology and Chemistry published new progress about Alcohols, ethoxylated Role: ANT (Analyte), ANST (Analytical Study). 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

Sun, Tao published the artcileSolvation Effect on the Improved Sodium Storage Performance of N-Heteropentacenequinone for Sodium-Ion Batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is heteropentacenequinone sodium ion battery solvation effect; electrolytes; organic electrode; sodium-ion batteries; solvation effect.

The performance of electrode material is correlated with the choice of electrolyte, however, how the solvation has significant impact on electrochem. behavior is underdeveloped. Herein, N-heteropentacenequinone (TAPQ) is investigated to reveal the solvation effect on the performance of sodium-ion batteries in different electrolyte environment. TAPQ cycled in diglyme-based electrolyte exhibits superior electrochem. performance, but experiences a rapid capacity fading in carbonate-based electrolyte. The function of solvation effect is mainly embodied in two aspects: one is the stabilization of anion intermediate via the compatibility of electrode and electrolyte, the other is the interfacial electrochem. characteristics influenced by solvation sheath structure. By revealing the failure mechanism, this work presents an avenue for better understanding electrochem. behavior and enhancing performance from the angle of solvation effect.

Angewandte Chemie, International Edition published new progress about Aromatic compounds Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Ouhib, Farid published the artcileInfluence of the Cyclic versus Linear Carbonate Segments in the Properties and Performance of CO2-Sourced Polymer Electrolytes for Lithium Batteries, Related Products of ethers-buliding-blocks, the main research area is cyclic carbonate segment polymer electrolyte lithium battery.

Polycarbonates bearing linear carbonate linkages and polyether segments have demonstrated to be highly attractive solid electrolyte candidates for the design of safe energy storage devices, for example, lithium metal batteries. In this contribution, we are studying the influence of the introduction of some cyclic carbonate linkages within the polymer backbone on the electrolyte properties. We first describe the synthesis of polycarbonates/polyethers containing different contents of both linear and cyclic carbonate linkages within the chain by the copolymerization of a highly reactive CO2-based monomer (bis(α-alkylidene cyclic carbonate)) with poly(ethylene glycol) diol and a dithiol at room temperature We then explore the influence of the content of the cyclic carbonates and the loading of the polymer by lithium bis(trifluoromethane) sulfonimide (LiTFSI) on the electrolyte properties (glass transition and melting temperatures, ion conductivity, and diffusivity). The best electrolyte candidate is characterized by a linear/cyclic carbonate linkage ratio of 82/18 when loaded with 30 weight % LiTFSI. It exhibits an ion conductivity of 5.6 × 10-5 S cm-1 at 25° (7.9 × 10-4 S cm-1 at 60°), which surpasses by 150% (424% at 60°) the conductivity measured for a similar polymer bearing linear carbonate linkages only. It is also characterized by a high oxidation stability up to 5.6 V (vs. Li/Li+). A self-standing membrane is then constructed by impregnating a glass fiber filter by this optimal polymer, LiTFSI, and a small amount of a plasticizer (tetraglyme). Cells are then assembled by sandwiching the membrane between a C-coated LiFePO4 (LFP) as the cathode and lithium as the anode and counter electrode. The cycling performances are evaluated at 0.1 C at 60° and room temperature for 40 cycles. Excellent cycling performances are noted with 100% of the theor. capacity (170 mAh g-1) at 60° and 73.5% of the theor. capacity (125 mAh g-1) at 25°.

ACS Applied Polymer Materials published new progress about Cyclic carbonates Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Bloi, Luise Maria published the artcileSodium Sulfide Cathodes Superseding Hard Carbon Pre-sodiation for the Production and Operation of Sodium-Sulfur Batteries at Room Temperature, Formula: C10H22O5, the main research area is sodium sulfide battery carbon cathode superseding fabrication morphol.

This study demonstrates for the first time a room temperature sodium-sulfur (RT Na-S) full cell assembled based on a pristine hard carbon (HC) anode combined with a nanostructured Na2S/C cathode. The development of cells without the demanding, time-consuming and costly pre-sodiation of the HC anode is essential for the realization of practically relevant RT Na-S prototype batteries. New approaches for Na2S/C cathode fabrication employing carbothermal reduction of Na2SO4 at varying temperatures (660 to 1060°C) are presented. Initial evaluation of the resulting cathodes in a dedicated cell setup reveals 36 stable cycles and a capacity of 740 mAh gS-1, which correlates to ~85% of the maximum value known from literature on Na2S-based cells. The Na2S/C cathode with the highest capacity utilization is implemented into a full cell concept applying a pristine HC anode. Various full cell electrolyte compositions with fluoroethylene carbonate (FEC) additive have been combined with a special charging procedure during the first cycle supporting in situ solid electrolyte interphase (SEI) formation on the HC anode to obtain increased cycling stability and cathode utilization. The best performing cell setup has delivered a total of 350 mAh gS-1, representing the first functional full cell based on a Na2S/C cathode and a pristine HC anode today.

Advanced Energy Materials published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Formula: C10H22O5.

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

Li, Wenbiao published the artcileAnthraquinone-Catalyzed TEMPO Reduction to Realize Two-Electron Energy Storage of Poly(TEMPO-methacrylate), Quality Control of 143-24-8, the main research area is anthraquinone catalyzed reduction electron energy storage poly methacrylate.

2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO) functional polymers are a type of organic electroactive material featuring a two-electron redox process. However, the electrochem. reduction of TEMPO (TEMPO•/-) is rarely adopted for energy storage due to its slow reaction kinetics. Here, we report using anthraquinone (AQ) as an organic redox mediator to promote TEMPO reduction kinetics. The catalytic effect of AQ is verified by electrochem. in situ FTIR spectroscopy in a model three-electrode system and further evidenced by cyclic voltammetry and chronoamperometry, providing a turnover frequency of 69 h-1. To exemplify the AQ catalytic effect in energy storage performance, we incorporate AQ groups into a typical TEMPO polymer (i.e., poly(TEMPO-methacrylate), PTMA). The AQ-catalyzed TEMPO reduction and AQ/carbon π-π interaction synergistically reduce the heterogeneous charge transfer resistance and accelerate the kinetics of the TEMPO•/- process in the PTMA electrode. The half-cell tests of the AQ functional PTMA show two prominent discharge plateaus with an initial capacity of 174 mAh g-1 and a 0.18% capacity loss per cycle. Moreover, the discharge capacity based on the TEMPO•/- couple is about 85 mAh g-1, 30% higher than that of the pristine PTMA. This new strategy could be widely applied to various organic redox systems to enhance their electrochem. kinetics and particularly improve the energy storage performance of organic polymer redox materials.

ACS Energy Letters published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Li, Zhejun published the artcileDesigning Effective Solvent-Catalyst Interface for Catalytic Sulfur Conversion in Lithium-Sulfur Batteries, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvent catalyst interface effect polysulfide reduction sulfur lithium battery.

S-based redox materials are promising next-generation energy storage solutions Identifying electrode and electrolyte properties that facilitate polysulfide reduction reactions is critical for rational material designs for S-based batteries. The authors reveal that the effectiveness of the polysulfide reduction is governed by the resolved binding strength of polysulfide on the electrode surface, which is dictated by the competition between electrode’s polysulfide chemisorption strength and solvent’s polysulfide solvation strength. Using Ti-based model compounds (TiX) as examples, the polysulfide reduction kinetics and S use increase with increasing polysulfide chemisorption strength of TiX, which can be associated with the decreasing electronegativity of nonmetal element (X). Strong coordinating solvent reduces catalyst’s efficacy by reducing the binding strength between polysulfide and the catalysts, highlighting that a weak solvent coordination is a critical selection criterion for effective catalysis in Li-S batteries. The study reveals phys. origins controlling the catalytic processes of polysulfide reduction reactions and unravels the interplay of solvent-polysulfide-catalyst competition for achieving higher-energy and reversible S-based energy storage.

Chemistry of Materials published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 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