Tag: M.W=200-250

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

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

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

Cao, Deqing published the artcileOxidative decomposition mechanisms of lithium carbonate on carbon substrates in lithium battery chemistries, SDS of cas: 143-24-8, the main research area is oxidative decomposition lithium carbonate carbon battery.

Lithium carbonate plays a critical role in both lithium-carbon dioxide and lithium-air batteries as the main discharge product and a product of side reactions, resp. Understanding the decomposition of lithium carbonate during electrochem. oxidation (during battery charging) is key for improving both chemistries, but the decomposition mechanisms and the role of the carbon substrate remain under debate. Here, we use an in-situ differential electrochem. mass spectrometry-gas chromatog. coupling system to quantify the gas evolution during the electrochem. oxidation of lithium carbonate on carbon substrates. Our results show that lithium carbonate decomposes to carbon dioxide and singlet oxygen mainly via an electrochem. process instead of via a chem. process in an electrolyte of lithium bis(trifluoromethanesulfonyl)imide in tetraglyme. Singlet oxygen attacks the carbon substrate and electrolyte to form both carbon dioxide and carbon monoxide-approx. 20% of the net gas evolved originates from these side reactions. Addnl., we show that cobalt(II,III) oxide, a typical oxygen evolution catalyst, stabilizes the precursor of singlet oxygen, thus inhibiting the formation of singlet oxygen and consequent side reactions.

Nature Communications published new progress about Catalysts. 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

Pang, Long published the artcileDesign of crown ether based micelles and their anti-tumor properties by perturbing potassium ion homeostasis, Name: 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is crown ether micelle potassium ion homeostasis antitumor.

Chemotherapy is one of the most used method for cancer therapy, however, brings huge pain to patients as the drugs commonly causes side effects. Inducing tumor cells apoptosis by perturbing ion homeostasis is a novel approach to replace chemotherapy in recent years. Crown ether has been widely used since it was discovered in the last century and has shown its potential in biol. applications. The aim of this paper is to design a series of novel nanometer micelles with crown ether on their surface. Crown ether was connected to a commonly used amphiphilic polymeric carrier, PEG-PCL, through ester bond (CPMs). Micelles about 120 nm in diameter were formed in aqueous solution The micelles could capture potassium ions prominently in both aqueous solution and tumor cells. In vitro and in vivo experiments showed that the CPMs had certain anti-tumor activity, indicating that the CPMs had anti-tumor potential.

Materials & Design published new progress about Adsorption. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Name: 2,5,8,11-Tetraoxatridecan-13-ol.

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

Fan, MouPing published the artcileIn situ growth of NiS2 nanosheet array on Ni foil as cathode to improve the performance of lithium/sodium-sulfur batteries, SDS of cas: 143-24-8, the main research area is nickel disulfide nanosheet foil growth lithium sodium sulfur battery.

The NiS2 nanosheet array on Ni foil (NiS2/NF) was prepared using an in situ growth strategy and sulfidation method and was used as the cathode of lithium sulfur battery. The unique nanostructure of the NiS2nanosheet array can provide abundant active sites for the adsorption and chem. action of polysulfides. Compared with the sulfur powder coated pure NF (pure NF-S) for lithium sulfur battery, the sulfur powder coated NiS2/NF (NiS2/NF-S) electrode exhibits superior electrochem. performance. Specifically, the NiS2/NF-S delivered a high reversible capacity of 1007.5 mAh g-1 at a c.d. of 0.1 C (1 C= 1675 mA g-1) and kept 74.5% of the initial capacity at 1.0 C after 200 cycles, indicating the great promise of NiS2/NF-S as the cathode of lithium sulfur battery. In addition, the NiS2/NF-S electrode also showed satisfactory electrochem. performance when used as the cathode for sodium sulfur battery.

Science China: Technological Sciences published new progress about Adsorption. 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

Wei, Zhaohuan published the artcileA novel Cr2O3/MnO2-x electrode for lithium-oxygen batteries with low charge voltage and high energy efficiency, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is chromium trioxide manganese dioxide electrode lithium oxygen battery voltage; Cr2O3; Energy efficiency; MnO2-x; charge voltage; lithium-oxygen battery.

A high energy efficiency, low charging voltage cathode is of great significance for the development of non-aqueous lithium-oxygen batteries. Non-stoichiometric manganese dioxide (MnO2-x) and chromium trioxide (Cr2O3) are known to have good catalytic activities for the discharging and charging processes, resp. In this work, we prepared a cathode based on Cr2O3 decorated MnO2-x nanosheets via a simple anodic electrodeposition-electrostatic adsorption-calcination process. This combined fabrication process allowed the simultaneous introduction of abundant oxygen vacancies and trivalent manganese into the MnO2-x nanosheets, with a uniform load of a small amount of Cr2O3 on the surface of the MnO2-x nanosheets. Therefore, the Cr2O3 /MnO2-x electrode exhibited a high catalytic effect for both discharging and charging, while providing high energy efficiency and low charge voltage. Exptl. results show that the as-prepared Cr2O3 /MnO2-x cathode could provide a specific capacity of 6,779 mA· h· g-1 with a terminal charge voltage of 3.84 V, and energy efficiency of 78%, at a c.d. of 200 mA·g-1 . The Cr2O3 /MnO2-x electrode also showed good rate capability and cycle stability. All the results suggest that the as-prepared Cr2O3 /MnO2-x nanosheet electrode has great prospects in non-aqueous lithium-oxygen batteries.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Adsorption. 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, Dan published the artcile1,2-dimethyl-3-propylimidazolium iodide as a multiple-functional redox mediator for Li-O2 batteries: In situ generation of a “”self-defensed”” SEI layer on Li anode, Formula: C10H22O5, the main research area is dimethyl propylimidazolium iodide redox mediator lithium oxygen battery anode.

How to develop a homogeneous redox mediator (RM) towards both ORR and OER and how to prevent the shuttle effect are two main issues for Li-O2 batteries thus far. Here, we firstly report 1,2-dimethyl-3-propylimidazolium iodide (DMPII), which serves multiple functions as a RM for discharge capacity promotion, a RM for charge potential reduction, and a Li anode protector for shuttling suppression by in situ generating a “”self-defensed”” SEI layer. Benefiting from these advantages, a cell with DMPII displays a stable cyclability with a low terminal charge potential of ∼3.6 V till the cell death, a considerable rate performance, and a good reversibility associated with Li2O2 formation and degradation Based on the exptl. and d. functional theory (DFT) calculation results, a working mechanism for a cell operation is also proposed. These results represent a promising progress in the development of multiple-functional RM for Li-O2 batteries. Moreover, we expect that this work gives an insight into the in situ protection of Li metal anode for board applications (e.g., Li-S batteries, all-solid-state Li-ion batteries, etc.).

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorption. 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

Wang, Hua published the artcileGreatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries, Related Products of ethers-buliding-blocks, the main research area is superoxide solid catalyst stability oxygen battery reduction reaction activity.

Oxygen reduction reactions (ORRs) with one- or two-electron-transfer pathways are the essential process for aprotic metal-oxygen batteries, in which the stability of superoxide intermediates/products (O2-, LiO2, NaO2, etc.) mainly dominates the ORR activity/stability and battery performance. However, little success in regulating the stability of the superoxides has been achieved due to their highly reactive characteristics. Herein, we identified and modulated the stability of superoxides by introducing anthraquinone derivatives as cocatalysts which functioned as superoxide trapper adsorbing the superoxides generated via surface-mediated ORR and then transferring them from the solid catalyst surface into electrolyte. Among the studied trappers, 1,4-difluoroanthraquinone (DFAQ) with electron-withdrawing groups showed the highest adsorption towards superoxides and could efficiently stabilize LiO2 in electrolyte, which greatly promoted the surface-mediated ORR rate and stability. This highlighted the magnitude of adsorption between the trapper and LiO2 on the ORR activity/stability. Using an aprotic Li-O2 battery as a model metal-O2 battery, the overall performance of the cell with DFAQ was substantially improved in terms of cell capacity, rate capability and cyclic stability. These results represent a significant advance in the understanding of ORR mechanisms and promoting the performance of metal-O2 batteries.

Science China Materials published new progress about Adsorption. 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

Maho, Anthony published the artcileAqueous processing and spray deposition of polymer-wrapped tin-doped indium oxide nanocrystals as electrochromic thin films, Synthetic Route of 143-24-8, the main research area is spray deposition polymer surface ITO nanocrystal electrochromic thin film.

Plasmonic metal oxide nanocrystals are interesting electrochromic materials because they display high modulation of IR light, fast switching kinetics, and durability. Nanocrystals facilitate solution-based and high-throughput deposition, but typically require handling hazardous nonaqueous solvents and further processing of the as-deposited film with energy-intensive or chem. treatments. We report on a method to produce aqueous dispersions of tin-doped indium oxide (ITO) by refunctionalizing the nanocrystal surface, previously stripped of its native hydrophobic ligands, with a hydrophilic poly(acrylic acid) polymer featuring a low d. of methoxy-terminated poly(ethylene oxide) grafts (PAA-mPEO4). To determine conditions favoring the adsorption of PAA-mPEO4 on ITO, we varied the pH and chem. species present in the exchange solution The extent of polymer wrapping on the nanocrystal surface can be tuned as a function of the pH to prevent aggregation in solution and deposit uniform, smooth, and optical quality spray coated thin films. We demonstrate the utility of polymer-wrapped ITO nanocrystal thin films as an electrochromic material and achieve fast, stable, and reversible near-IR modulation without the need to remove the polymer after deposition provided that a wrapping d. of ~20% by mass is not exceeded.

Chemistry of Materials published new progress about Adsorption. 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