Month: November 2022

Kolomoiets, O. V. published the artcileConductivity and Electrochemical Stability of Non-Aqueous Electrolytes for Magnesium Power Sources, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is magnesium power source nonaqueous electrolyte electrochem stability.

We present promising electrolyte candidates, Mg(ClO4)2 in glyme-based solutions, for future design of advanced magnesium (Mg) batteries. These electrolytes show high conductivity and electrochem. stability. Moreover, Mg(ClO4)2-based electrolytes present the compatibility toward MnO2-cathodes, up to a high voltage of 3.5 V vs. Mg/Mg2+.

Materials Today: Proceedings 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

Zhang, Tao published the artcileExploring the charge reactions in a Li-O2 system with lithium oxide cathodes and nonaqueous electrolytes, Synthetic Route of 143-24-8, the main research area is charge decomposition lithium oxygen battery lithium oxide cathode electrolyte.

Nonaqueous lithium-oxygen batteries have attracted considerable attention due to their high energy d. Huge efforts have been made to unravel the fundamentals of Li-O2 battery chem. However, current Li-O2 batteries still suffer from several unresolved problems such as the instability of electrolytes and sluggish oxidation of lithium oxides during the charging process. In this work, we propose a detailed study to investigate the charge mechanism of lithium oxide materials in different electrolytes. Com. available lithium peroxide and lithium oxide have been employed as cathodes to determine how lithium oxides (both lithium oxide and lithium peroxide) and electrolytes change during charge. The result shows that Li2O2 decomposed to lithium and oxygen; meanwhile, the electrolyte has a significant influence on Li2O2 decomposition Furthermore, while most of the Li2O material participates in side reactions with the electrolyte, some of it is found to delithiate and crumble in structure.

Journal of Materials Chemistry A: Materials for Energy and Sustainability 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

Rauter, Michael T. published the artcileProduct formation during discharge: a combined modelling and experimental study for Li-O2 cathodes in LiTFSI/DMSO and LiTFSI/ TEGDME electrolytes, COA of Formula: C10H22O5, the main research area is lithium bistrifluoromethanesulfonylimide dimethylsulfoxide tetraethylene glycol dimethyl ether electrolyte cathode.

Li-air or Li-O2 batteries are a promising energy storage technol. due to the potentially high energy d. However, significant challenges related to reversible charge/discharge of these cells need to be solved. The discharge reaction is generally agreed to proceed via two main routes, which may occur simultaneously. These are the surface mechanism, leading to Li2O2 product formation as surface films, or the solution mechanism, with solid particles formed in the pore structure of the cathode. A detailed understanding of the reaction mechanisms and the dynamic performance of the electrodes is key to further improvements. Here, we present a math. model for the discharge process, based on porous electrode theory, including effects of reactant transport and kinetic limitations, as well as the continuous change of properties due to the formation of reaction products via the solution mechanism and the surface mechanism. The model describes the dynamic change in the ratio of the surface and solution mechanism as a function of growth of film thickness, in line with recent findings. The model is able to predict the differences in exptl. obtained discharge curves between DMSO and tetra ethylene glycol di-Me ether solvents with 1M LiTFSI, with a min. of free parameters. The model parameters are based on phys. characterization of the materials and the electrodes, or determined by fitting to impedance spectra recorded during the discharge. The developed model and the methodol. will provide a powerful tool for optimization of such electrodes.

Journal of Applied Electrochemistry 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

Kuang, Silan published the artcileAnion-containing solvation structure reconfiguration enables wide-temperature electrolyte for high-energy-density lithium-metal batteries, COA of Formula: C10H22O5, the main research area is solvation structure reconfiguration wide temperature electrolyte; lithium ion secondary battery electrolyte; high voltage; liPO2F2; localized high-concentration electrolyte; solvation structure; wide temperature.

The demand for high-energy-d. lithium batteries (LBs) that work under a wide temperature range (-40 to 60°C) has been increasing recently. However, the conventional lithium hexafluorophosphate (LiPF6)-based ester electrolyte with a solvent-based solvation structure has limited the practical application of LBs under extreme temperature conditions. In this work, a novel localized high-concentration electrolyte (LHCE) system is designed to achieve the anion-containing solvation structure with less free solvent mols. using lithium difluorophosphate (LiPO2F2) as a lithium salt, which enables wide-temperature electrolyte for LBs. The optimized solvation structure contributes to the cathode-electrolyte interface (CEI) with abundant LiF and P-O components on the surface of the LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode, effectively inhibiting the decomposition of electrolyte and the dissolution of transition-metal ions (TMIs). Moreover, the weakened Li+-dipole interaction is also beneficial to the desolvation process. Therefore, the 4.3 V Li||NCM523 cell using the modified electrolyte maintains a high capacity retention of 81.0% after 200 cycles under 60°C. Meanwhile, a considerable capacity of 70.9 mAh g-1 (42.0% of that at room temperature) can be released at an extremely low temperature of -60°C. This modified electrolyte dramatically enhances the electrochem. stability of NCM523 cells by regulating the solvation structure, providing guidelines for designing a multifunctional electrolyte that works under a wide temperature range.

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, COA of Formula: C10H22O5.

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

Ramezanitaghartapeh, Mohammad published the artcileConjugated microporous polycarbazole-sulfur cathode used in a lithium-sulfur battery, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is conjugated microporous polycarbazole sulfur cathode lithium battery.

The electropolymerization of Conjugated Microporous Poly(1,3,5-tris(N-carbazolyl)benzene) (CMPTCBz) was investigated using a range of techniques. After the potential window was optimized for the electropolymerization process, a fixed potential was found to generate a CMPTCBz with minimal overoxidn. and a high BET surface area. The CMPTCBz was mixed with sulfur and used in the optimized preparation of CMPTCBz-S cathodes. Coin cells were assembled with lithium metal used as the anode and electrochem. evaluated. Results showed that the CMPTCBz-S cathodes with different sulfur loadings have excellent charge/discharge cycling performance with initial discharge capacities ranging from 800 to 1400 mAh·g-1S and a capacity retention greater than 80% after 100 cycles. This is due to both the enhanced elec. conductivity of the cathode and phys. confinement of the generated lithium-polysulfides inside the pores of the CMPTCBz. In a further experiment, a high sulfur loaded CMPTCBz-S cathode produced an initial discharge capacity of 548 mAh·g-1S and a capacity retention of 95% after 100 cycles using an organic electrolyte. Anal. using XPS showed that the sulfur to polysulfide conversion coupled with the dual functionality of the CMPTCBz in retaining the generated polysulfide are the key parameters for this superior performance.

Journal of the Electrochemical Society 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

Chen, Zifeng published the artcileA nitroaromatic cathode with an ultrahigh energy density based on six-electron reaction per nitro group for lithium batteries, HPLC of Formula: 143-24-8, the main research area is nitroarom cathode energy density electron reaction lithium battery; Li-organic battery; high energy density; nitroaromatic compound; organic electrode material; six-electron reduction.

Organic electrode materials have emerged as promising alternatives to conventional inorganic materials because of their structural diversity and environmental friendliness feature. However, their low energy densities, limited by the single-electron reaction per active group, have plagued the practical applications. Here, we report a nitroarom. cathode that performs a six-electron reaction per nitro group, drastically improving the specific capacity and energy d. compared with the organic electrodes based on single-electron reactions. Based on such a reaction mechanism, the organic cathode of 1,5-dinitronaphthalene demonstrates an ultrahigh specific capacity of 1,338 mAh·g-1 and energy d. of 3,273 Wh·kg-1, which surpass all existing organic cathodes. The reaction path was verified as a conversion from nitro to amino groups. Our findings open up a pathway, in terms of battery chem., for ultrahigh-energy-d. Li-organic batteries.

Proceedings of the National Academy of Sciences of the United States of America 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, HPLC of Formula: 143-24-8.

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

Plunkett, Samuel T. published the artcileCharge Transport Properties of Lithium Superoxide in Li-O2 Batteries, COA of Formula: C10H22O5, the main research area is charge transport property lithium superoxide lithium oxygen battery.

The theor. energy d. of lithium-oxygen (Li-O2) batteries is extremely high, although there are many challenges that must be overcome to achieve high energy d. in a manufactured cell. For example, little is known about the properties of one of the key intermediates, lithium superoxide (LiO2), which until recently had not been stabilized in bulk form. In this work, lithium superoxide was deposited onto iridium-reduced graphene oxide (Ir-rGO) cathodes in a Li-O2 system under a flow of O2. Lithium peroxide (Li2O2) was subsequently produced on the cathode surface in an inert Ar atm. Based on a detailed anal. of electrochem. impedance spectroscopy data, it was demonstrated exptl. for the first time that the charge transport resistance through LiO2 was much lower than for Li2O2 and correlated with lower LiO2 charge overpotentials. This result indicates that LiO2 has good electronic conductivity and confirms previous theor. predictions that bulk LiO2 has better charge transport properties than Li2O2. In addition, impedance and other characterization of Li2O2 formation from LiO2 in an Ar atm. revealed that when surface-mediated Li2O2 formation occurs, it has a significantly lower discharge potential than when it forms through a solution-phase-mediated process. These significant findings will contribute to the development of Li-O2 batteries through better understanding of LiO2 properties and formation mechanisms.

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, COA of Formula: C10H22O5.

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

Zhao, Huimin published the artcileRu nanosheet catalyst supported by three-dimensional nickel foam as a binder-free cathode for Li-CO2 batteries, Synthetic Route of 143-24-8, the main research area is ruthenium catalyst nickel foam lithium carbon dioxide battery cathode.

Due to the capability of CO2 uptake and the high theor. energy d., Li-CO2 batteries have attracted a great deal of attention as a novel and promising energy storage system which is based on the reversible reaction between lithium and CO2. However, the insulating Li2CO3 formed upon the discharge process, which is difficult to be decomposed during recharge process due to the lack of effective cathode catalyst, leads to the poor cycling performance and huge overpotential of the Li-CO2 batteries. In this work, the Ru nanosheets were directly grown on one side of the three-dimensional nickel foam through a galvanic replacement reaction to form the Ru/Ni electrode, which was further used in the Li-CO2 batteries. The highly dispersed Ru nanosheets in the Ru/Ni cathode effectively promote the decomposition of discharge product Li2CO3 and thus reduce the charge overpotential. Moreover, the typical porous and binder-free Ru/Ni electrode not only has a sturdy construction to suppress the side reaction in the Li-CO2 batteries, but also enables the rapid permeation of CO2 and electrolyte/electron into the active sites of the Ru/Ni electrode. As a result, the Ru/Ni cathode-based Li-CO2 battery exhibits the superior discharge capacity (9502 mAh g-1), good coulombic efficiency (95.4%) and excellent rate performance (3177 mAh g-1 at 500 mA g-1) at the full discharge/charge condition. When operated at the limited capacity of 1000 mAh g-1, this cell can run for over 100 cycles with the charge potential below 4.1 V. The findings provide a snapshot towards improving the reversibility of Li-CO2 batteries by designing the binder-free stable cathodes.

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, Synthetic Route of 143-24-8.

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

Zhao, Bowen published the artcileInsoluble Naphthoquinone-Derived Molecular Cathode for High-Performance Lithium Organic Battery, Computed Properties of 143-24-8, the main research area is insoluble naphthoquinone mol cathode lithium organic battery.

Organic electrode materials have attracted significant attention for rechargeable lithium organic batteries owing to the anticipated electrochem. property and environmentally friendly features. Benzoquinone and naphthoquinone as the simplest quinone substances have been considered as promising cathode materials because of their high theor. specific capacities and discharge voltages. However, they are soluble in most organic liquid electrolytes, which results in poor electrochem. performance. Herein, a novel mol. cathode material based on naphthoquinone, i.e., 2,2�(1,4-phenylenedithio) bis(1,4-naphthoquinone) (1,4-PNQ), is designed and synthesized. It shows greatly decreased solubility as a result of strong intermol. interactions. In a lithium half cell, it exhibits high carbonyl utilization of close to 100% with a high initial capacity of 231 mAh g-1. Meanwhile, 1,4-PNQ presents improved cyclability, retaining a high capacity of 185 mAh g-1 after 120 cycles. Remarkably, it retains 93.5% of the initial capacity after 500 cycles at 5 C rate. This work provides a novel mol. design strategy to develop naphthoquinone-derived cathode materials for high performance lithium organic batteries.

Advanced Functional 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, Computed Properties of 143-24-8.

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

Chen, Yi-Hao published the artcileCobalt(II) phenoxy-imine complexes in radical polymerization of vinyl acetate: The interplay of catalytic chain transfer and controlled/living radical polymerization, Related Products of ethers-buliding-blocks, the main research area is cobalt phenoxyimine complex catalyst vinyl acetate radical polymerization.

A series of cobalt(II) phenoxy-imine complexes (CoII(FI)2) have been synthesized to mediate the radical polymerization of vinyl acetate (VAc) and Me acrylate (MA) to evaluate the influence of chelating atoms and configuration to the control of polymerization The VAc polymerizations showed the properties of controlled/living radical polymerization (C/LRP) with complexes 1a and 3a, but the catalytic chain transfer (CCT) behaviors with complexes 2a, 1b, 2b, and 3b. The control of VAc polymerization mediated by complex 1a could be improved by decreasing the reaction temperature to approach the mol. weights that not only linearly increased with conversions but also matched the theor. values and relatively narrow mol. weight distributions. The catalytic chain transfer polymerizations (CCTP) mediated by complexes 2a, 1b, 2b, and 3b were characterized by Mayo plots and the polymer chain end double bonds were observed by 1H NMR spectra. The tendency toward C/LRP or CCTP in VAc polymerization mediated by CoII(FI)2 could be determined by the ligand structure. Cobalt complex coordinated by the ligand with more steric hindered and less electron-donating substituents favored the controlled/living radical polymerization In contrast, the efficiency of CCT process could be enhanced by less steric hindered, more electron-donating ligands. The controlled/living radical polymerization of MA, however, could not be achieved by the mediation of these cobalt(II) phenoxy-imine complexes. Associated with the results of polymerization mediated by other cobalt complexes, this study implied that the configuration and spin state of cobalt complexes were more critical than the chelating atoms to the control behavior of radical polymerization

Journal of Polymer Science (Hoboken, NJ, United States) published new progress about Crystal structure. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Related Products of ethers-buliding-blocks.

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