Month: December 2022

Kottam, P. K. R. published the artcileEffect of salt concentration, solvent donor number and coordination structure on the variation of the Li/Li+ potential in aprotic electrolytes, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium electrolyte salt concentration solvent donor number.

The use of concentrated aprotic electrolytes in lithium batteries provides numerous potential applications, including the use of high-voltage cathodes and Li-metal anodes. In this paper, we aim at understanding the effect of salt concentration on the variation of the Li/Li+ Quasi-Reference Electrode (QRE) potential in Tetraglyme (TG)-based electrolytes. Comparing the obtained results to those achieved using DMSO DMSO-based electrolytes, we are now able to take a step forward and understand how the effect of solvent coordination and its donor number (DN) is attributed to the Li-QRE potential shift. Using a revised Nernst equation, the alteration of the Li redox potential with salt concentration was determined accurately. It is found that, in TG, the Li-QRE shift follows a different trend than in DMSO owing to the lower DN and expected shorter lifespan of the solvated cation complex.

Energies (Basel, Switzerland) 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, Application of 2,5,8,11,14-Pentaoxapentadecane.

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

Globa, N. I. published the artcileEnhancing of electrochemical characteristics of Li-S system by means of optimization of sulfur electrode and electrolyte composition, Category: ethers-buliding-blocks, the main research area is lithium sulfur battery galvanostatic cycling optimization electrode.

The article discusses the influence of technol. parameters of sulfur electrodes and the concentration composition of the saltsolvation electrolytes TEGDME – LiTFSI on the specific characteristics of Li-S cells obtained under galvanostatic cycling conditions. The dependences of the specific capacity on the composition of the cathode, the charge-discharge c.d., as well as capacity retention upon storage are discussed.

ECS Transactions 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, Category: ethers-buliding-blocks.

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

Plunkett, Samuel T. published the artcileA New Cathode Material for a Li-O2 Battery Based on Lithium Superoxide, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium oxygen battery cathode lithium superoxide.

Li-O2 batteries suffer from large charge overpotentials due to the high charge transfer resistance of Li2O2 discharge products. A potential solution to this problem is the development of LiO2-based batteries that possess low charge overpotentials due to the lower charge transfer resistance of LiO2. In this report, IrLi nanoparticles were synthesized and implemented for the first time as a LiO2 battery cathode material. The IrLi nanoparticle synthesis was achieved by a temperature- and time-optimized thermal reaction between a precise ratio of iridium nanoparticles and lithium metal. Li-O2 batteries employing the IrLi-rGO cathodes were cycled up to 100 cycles at moderate current densities with sustained low cell charge potentials (<3.5 V). Various characterization techniques, including SEM, DEMS, TEM, Raman, and titration, were used to demonstrate the LiO2 discharge product and the absence of Li2O2. On the basis of first-principles calculations, it was concluded that the formation of crystalline LiO2 can be stabilized by epitaxial growth on the (111) facets of IrLi nanoparticles present on the cathode surface. These findings demonstrate that, in addition to the previously studied Ir3Li intermetallic, the IrLi intermetallic also provides a means by which LiO2 discharge products can be stabilized and confirms the importance of templating for the formation process. ACS Energy Letters 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

Li, Jiade published the artcileEffect of O2 adsorption on the termination of Li-O2 batteries discharge, COA of Formula: C10H22O5, the main research area is oxygen adsorption termination lithium batteries discharge.

Li-O (Li-O2) batteries can exhibit high theor. energy d. and be surely suitable for potential energy storage. However, they suffer from early discharge termination and consequently low practical capacity, which was regarded as the blockage of the diffusion of O and the electron transfer on cathode surface. Herein, based on exptl. results and theor. simulation, the discharge termination is largely caused by the surface adsorption of O and the corresponding reaction intermediates. A TiO2-coated binder-free C paper was prepared and used as cathode for Li-O2 battery. During the 1st discharge, the discharge plateau at ∼2.55 V was not observed due to the weak adsorption of O on TiO2 surface, indicative of an early discharge termination of Li-O2 battery. It is further identified that the formed vacancies on TiO2 surface during lithiation/delithiation prevents the early discharge termination. Therefore, the interaction between O and electrode surface plays a key role in discharge termination mechanism of Li-O2 batteries.

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, COA of Formula: C10H22O5.

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

Zhou, Xuan published the artcileEvaluation of Computational Chemistry Methods for Predicting Redox Potentials of Quinone-Based Cathodes for Li-Ion Batteries, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is quinone cathode lithium ion battery redox potential computational chem.

High-throughput computational screening (HTCS) is an effective tool to accelerate the discovery of active materials for Li-ion batteries. For the evaluation of organic cathode materials, the effectiveness of HTCS depends on the accuracy of the employed chem. descriptors and their computing cost. This work was focused on evaluating the performance of computational chem. methods, including semi-empirical quantum mechanics (SEQM), d.-functional tight-binding (DFTB), and d. functional theory (DFT), for the prediction of the redox potentials of quinone-based cathode materials for Li-ion batteries. In addition, we evaluated the accuracy of three energy-related descriptors: (1) the redox reaction energy, (2) the LUMO (LUMO) energy of reactant mols., and (3) the HOMO (HOMO) energy of lithiated product mols. Among them, the LUMO energy of the reactant compounds, regardless of the level of theory used for its calculation, showed the best performance as a descriptor for the prediction of exptl. redox potentials. This finding contrasts with our earlier results on the calculation of quinone redox potentials in aqueous media for redox flow batteries, for which the redox reaction energy was the best descriptor. Furthermore, the combination of geometry optimization using low-level methods (e.g., SEQM or DFTB) followed by energy calculation with DFT yielded accuracy as good as the full optimization of geometry using the DFT calculations Thus, the proposed calculation scheme is useful for both the optimum use of computational resources and the systematic generation of robust calculation data on quinone-based cathode compounds for the training of data-driven material discovery models.

Batteries (Basel, Switzerland) 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

Mushtaq, Muhammad published the artcileComposite Cathode Architecture with Improved Oxidation Kinetics in Polymer-Based Li-O2 Batteries, Synthetic Route of 143-24-8, the main research area is cathode oxidation kinetics polymer electrolyte lithium ion battery safety; composite cathode lithium ion battery oxidation kinetics; Li−oxygen battery; composite cathode; hexamethylphosphoramide; oxidation kinetics; polymer electrolyte.

The Li-O2 battery based on the polymer electrolyte has been considered as the feasible solution to the safety issue derived from the liquid electrolyte. However, the practical application of the polymer electrolyte-based Li-O2 battery is impeded by the poor cyclability and unsatisfactory energy efficiency caused by the structure of the porous cathode. Herein, an architecture of a composite cathode with improved oxidation kinetics of discharge products was designed by an in situ method through the polymerization of the electrolyte precursor for the polymer-based Li-O2 battery. The composite cathode can provide sufficient gas diffusion channels, abundant reaction active sites, and continuous pathways for ion diffusion and electron transport. Furthermore, the oxidation kinetics of nanosized discharge products formed in the composite cathode can be improved by hexamethylphosphoramide during the recharge process. The polymer-based Li-O2 batteries with the composite cathode demonstrate highly reversible capacity when fully charged and a long cycle lifetime under a fixed capacity with low overpotentials. Moreover, the interface contact between hexamethylphosphoramide and the Li metal can be stabilized simultaneously. Therefore, the composite cathode architecture designed in this work shows a promising application in high-performance polymer-based Li-O2 batteries.

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, Synthetic Route of 143-24-8.

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

Zhao, Guangyu published the artcileCapacitive Behavior Based on the Ultrafast Mass Transport in a Self-Supported Lithium Oxygen Battery Cathode, Category: ethers-buliding-blocks, the main research area is lithium oxygen battery cathode wood derived substrate; metal organic framework derivate capacitive behavior.

The pore structures of lithium oxygen battery cathodes play a significant role in their reversibility and lifespan by deciding the mass transport in cathodes. In the present work, a porous Co3O4/C modified wood-derived slice is used as self-supported lithium oxygen battery cathode. The straight tubes in vertical and horizontal directions inherited from wood vessels afford the cathodes facilitated paths for gas and ion transport, resp. Furthermore, the homogeneous distribution of mesoporous Co3O4/C polyhedrons on tube wall of wood-derived substrates creates a uniform reaction interface in the cathodes. The ultrafast mass transport and uniform reaction interface lead to a capacitive contribution in battery capacity, owing to the fast kinetics that is free from the semi-infinite diffusion control. Accordingly, these merits enable the cathodes to have good reversibility and cyclability. The batteries can cycle more than 380 rounds without obvious overpotential variation at a c.d. of 1.0 mA cm-2 within a capacity limitation of 1.0 mAh cm-2.

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, Category: ethers-buliding-blocks.

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

Hu, Anjun published the artcileImproved Cyclability of Lithium-Oxygen Batteries by Synergistic Catalytic Effects of Two-Dimensional MoS2 Nanosheets Anchored on Hollow Carbon Spheres, Application In Synthesis of 143-24-8, the main research area is lithium oxygen battery composite catalyst molybdenum disulfide; hollow carbon sphere synergistic effect.

The design and development of high-efficient electrocatalysts plays a decisive role in improving the stability of lithium-oxygen (Li-O2) batteries. Here, two-dimensional (2D) MoS2 nanosheets anchored on hollow carbon spheres (MoS2/HCS) composites is designed and reported as promising cathode catalysts for Li-O2 batteries. The MoS2/HCS-based Li-O2 battery shows superior electrochem. performance, in terms of high capacity (4010 mA h g-1) and enhanced cycling performance (104 cycles). XPS results reveal that the formation of Li2CO3 and other side products can be effectively alleviated when MoS2/HCS electrode is used as the cathode. On the basis of exptl. studies, it is found that the synergistic effects, which originated from the superior catalytic property of MoS2 nanosheets and the good elec. conductivity of HCS with high surface area, is the main reason for performance improvement. The synergistic effects induced by the dispersed MoS2 nanosheets anchored on nanostructured HCS cathodes provide a promising strategy for developing catalysts of O2 electrode for Li-O2 batteries with excellent performance.

ACS Sustainable Chemistry & Engineering 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, Application In Synthesis of 143-24-8.

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

Zhang, Huang published the artcileSolvent-dictated sodium sulfur redox reactions: investigation of carbonate and ether electrolytes, Quality Control of 143-24-8, the main research area is redox reaction carbonate ether electrolyte sodium sulfur ion battery.

Sulfur-based cathode chemistries are essential for the development of high energy d. alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature The solvent is found to play a key role for the electrochem. reactivity of the sulfur cathode in sodium-sulfur (Na-S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochem. reversibility. On the other hand, an irreversible solution-phase reaction is observed in carbonate solvents. This study clearly reveals the solvent-dependent Na-S reaction pathways in room temperature Na-S batteries and provides an insight into realizing their high energy potential, via electrolyte formulation design.

Energies (Basel, Switzerland) 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, Quality Control of 143-24-8.

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

Kim, Juhyoung published the artcileAn efficient electrocatalyst of NiO supported on carbon paper for nonaqueous Li-O2 batteries, Product Details of C10H22O5, the main research area is nickel oxide carbon lithium oxygen battery electrocatalyst polarization fabrication.

A Li-O2 battery has been considered as one of the most promising energy storage systems owing to their ultrahigh theor. energy densities. However, low energy efficiency (high polarization) during discharge/charge and resulting cycle stabilities have severely limited the development of this type of battery. Here, we demonstrate a simple preparation of NiO supported on carbon paper by dipping carbon paper in Ni acetate solution and heating it to apply NiO directly to the carbon as a cathode material for nonaqueous Li-O2 batteries. The prepared sample was confirmed as the structure of NiO-incorporated carbon using XPS, X-ray absorption spectroscopy (XAS), and high-resolution transmission electron microscopy (HR-TEM) anal. despite amorphous patterns seen in XRD (∼10% NiO in NiO supported on carbon paper). A Li-O2 cell in which the NiO supported on carbon paper was applied as an electrocatalyst showing an initial ∼ 6% increase in energy efficiency and a subsequent 50 cycle retention.

Ionics 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, Product Details of C10H22O5.

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