Month: November 2022

Nguyen, Manh Tien published the artcileEffects of zwitterionic molecules on ionic association in ethylene oxide-based electrolytes, Computed Properties of 143-24-8, the main research area is zwitterion ethylene oxide electrolyte ionic association mol dynamic simulation.

This work investigates the effect of zwitterionic mols. on ionic association in ethylene oxide (EO)-based electrolytes using mol. dynamics simulations. Zwitterionic mols. can associate with cations and anions because they possess both pos. and neg. charged groups. This unique feature can be leveraged to develop electrolytes with high ionic conductivity if we understand how zwitterionic mols. influence ionic associations We investigate the ionic associations in the electrolytes composed of oligo(ethylene oxide) (EO) (EOx, x = 2, 3, 4, and 5), LiTFSI and zwitterionic mols. containing cationic imidazole group and anionic sulfonate group using mol. dynamics simulations. The analyzed properties include the radial distribution functions between Li+, [TFSI]-, EOx and zwitterionic mols., the structures and dynamics of Li+-[TFSI]-, Li+- EOx and Li+-zwitterion associations, and the diffusion coefficients of Li+, [TFSI]-, EOx and zwitterionic mols. The simulation results show two distinct effects of zwitterionic mols. on ionic associations in the electrolytes. First, they could release Li+ from the trapping effect of EOx chains and accelerate Li+ transport. Second, they can associate with Li+ themselves and slow down the Li+ transport. The competition between these two effects relates to the length of the EOx chains. Our simulations suggest that zwitterionic mols. could help manipulate the ionic conductivity of polyethylene oxide electrolytes.

Fluid Phase Equilibria 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, Computed Properties of 143-24-8.

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

Lv, Zhiqiang published the artcileSolvation structure and solid electrolyte interface engineering for excellent Na+ storage performances of hard carbon with the ether-based electrolytes, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvation structure solid electrolyte interface engineering excellent sodium storage.

Compared with the commonly used ester-based electrolytes, more excellent Na+ storage performances can be achieved for hard carbon in the ether-based electrolyte. Whereas, the mysteries underlying such excellent electrochem. performances are still unclear. Herein, the impressive Na+ storage behaviors of hard carbon in the ether-based electrolyte were clarified based on a profound insight of Na+ storage mechanism. It’s revealed that the co-intercalation behavior is responsible for the lower de-solvation energy, which contributes to a facile de-solvation process and the enhanced charge transfer kinetic. Besides, a thin, amorphous and flexible solid-electrolyte interface (SEI) in ether-based electrolyte with a specific structure where the amorphous nanoparticles are coated with organic species was probed. And the resulted SEI is beneficial to achieving much lower activation energy for Na+ diffusion through SEI and a stable interface during cycling due to its excellent ion-conducting ability and mech. flexibility. It’s also demonstrated that ether-based solvent with short chain length plays a pos. impact on the Na+ storages, which also well agrees with the above synergistic effect. The research plays a significant role in elucidating the uniqueness of ether-based electrolytes to hard carbon and promoting its practical application in future sodium-based battery chemistries.

Chemical Engineering Journal (Amsterdam, Netherlands) 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

Jankowski, Piotr published the artcileDesigning High-Performant Lithium Battery Electrolytes by Utilizing Two Natures of Li+ Coordination: LiTDI/LiTFSI in Tetraglyme, COA of Formula: C10H22O5, the main research area is tetraglyme lithium battery electrolyte spectrum.

Highly concentrated electrolytes (HCEs) based on glymes, such as tetraglyme (G4), are currently the focus of much battery research, primarily due to their unique properties – especially with respect to ion transport and electrochem. stability. While the LiTFSI-G4 and LiTDI-G4 systems both have been studied extensively, we here design their hybrid electrolytes to answer; will the resulting properties be averages/superpositions or will there be synergies created We find the latter to be true and demonstrate that the most performant electrolytes are obtained by introducing a minor amount of LiTDI to an LiTFSI based electrolyte, which promotes the disproportionation and formation of “”free”” cations and at the same to avoid large aggregates – shown comprehensively both exptl. and by different modeling approaches and analyses combined. This electrolyte composition strategy can be generalized to other salts and solvents and thus a route towards a flora of novel battery electrolytes is here suggested.

Batteries & Supercaps 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, COA of Formula: C10H22O5.

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

Drews, Janina published the artcileModeling of electron-transfer kinetics in magnesium electrolytes: Influence of the solvent on the battery performance, Product Details of C10H22O5, the main research area is electron transfer kinetics magnesium ion secondary battery electrolyte; Computational chemistry; Deposition mechanism; Desolvation; Kinetics; Rechargeable magnesium batteries.

The performance of rechargeable magnesium batteries is strongly dependent on the choice of electrolyte. The desolvation of multivalent cations usually goes along with high energy barriers, which can have a crucial impact on the plating reaction. This can lead to significantly higher overpotentials for magnesium deposition compared to magnesium dissolution In this work we combine exptl. measurements with DFT calculations and continuum modeling to analyze Mg deposition in various solvents. Jointly, these methods provide a better understanding of the electrode reactions and especially the magnesium deposition mechanism. Thereby, a kinetic model for electrochem. reactions at metal electrodes is developed, which explicitly couples desolvation to electron transfer and, furthermore, qual. takes into account effects of the electrochem. double layer. The influence of different solvents on the battery performance is studied for the state-of-the-art magnesium tetrakis(hexafluoroisopropyloxy)borate electrolyte salt. It becomes apparent that not necessarily a whole solvent mol. must be stripped from the solvated magnesium cation before the first reduction step can take place. For Mg reduction it seems to be sufficient to have one coordination site available, so that the magnesium cation is able to get closer to the electrode surface. Thereby, the initial desolvation of the magnesium cation determines the deposition reaction for mono-, tri- and tetraglyme, whereas the influence of the desolvation on the plating reaction is minor for diglyme and THF. Overall, we can give a clear recommendation for diglyme to be applied as solvent in magnesium electrolytes.

ChemSusChem 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, Product Details of C10H22O5.

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

Shibuya, Yoshiki published the artcileBrush-First ROMP of poly(ethylene oxide) macromonomers of varied length: impact of polymer architecture on thermal behavior and li+ conductivity, Quality Control of 23783-42-8, the main research area is ROMP polyoxyethylene macromonomer polynorbornene architecture thermal ionic conductivity; polymer electrolyte solid battery polyoxyalkylene polyalkenamer bottlebrush; ring opening metathesis polymerization polyethylene oxide macromonomer norbornene.

The properties of polymeric materials are dictated not only by their composition but also by their mol. architecture. Here, by employing brush-first ring-opening metathesis polymerization (ROMP), norbornene-terminated poly(ethylene oxide) (PEO) macromonomers (MM-n, linear architecture), bottlebrush polymers (Brush-n, comb architecture), and brush-arm star polymers (BASP-n, star architecture), where n indicates the average d.p. (DP) of PEO, are synthesized. The impact of architecture on the thermal properties and Li+ conductivities for this series of PEO architectures is investigated. Notably, in polymers bearing PEO with the highest d.p., irresp. of differences in architecture and mol. weight (∼100-fold differences), electrolytes with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) as an Li+ source exhibit normalized ionic conductivities (σn) within only 4.9 times difference (σn = 29.8 × 10-5 S cm-1 for MM-45 and σn = 6.07 × 10-5 S cm-1 for BASP-45) at a concentration of Li+ r = [Li+]/[EO] = 1/12 at 50 °C. © 2018 Wiley Periodicals, Inc.J. Polym. Sci., Part A: Polym.Chem. 2018.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Battery electrolytes. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Quality Control of 23783-42-8.

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

Bawol, Pawel Peter published the artcileUnraveling the Mechanism of the Solution-Mediated Oxygen Reduction in Metal-O2 Batteries: The Importance of Ion Association, Synthetic Route of 143-24-8, the main research area is lithium peroxide potassium superoxide metal oxygen battery reduction.

One of the bottlenecks in Li-O2 batteries is the film like growth of Li2O2 on the electrode surface during discharge leading to early cell death. To tackle this problem 2,5-Di-tert-1,4-benzoquinone (DBBQ) was introduced as a soluble redox mediator. This redox mediator is avoiding the Li2O2 layer-by-layer growth on the electrode surface and thus leading to higher discharge capacities of the Li-O2 cell. In this study, we investigate the ion pairing between the cation of the conducting salt and the DBBQ monoanion and the resulting impact on the ORR activity of the DBBQ monoanion. We investigate TBA+, K+ and Li+ as cations and TEGDME and DMSO as solvents. We found out that there is a direct correlation between the ORR activity of DBBQ- and the ion pairing of DBBQ- with the cation of the supporting electrolyte: Only if DBBQ is strongly associated with the cations of the electrolyte it will reduce oxygen in the electrolyte. Increasing the Li+ concentration in the electrolyte shifts the ORR potential to more pos. electrode potentials. In addition, we are describing a new exptl. approach to investigate the kinetics of the homogenous ORR via time resolved mass spectrometry. With this approach we found out, that the reaction Li-DBBQ(sol)+O2(sol)k1⇌k-1Li-DBBQ-O2(sol) is 80 times faster in a TEGDME based electrolyte than in a DMSO-based electrolyte. We determined k1 with 5.1 102 s-1 M-1and k-1 with 3.7 102 s-1 M-1 in TEGDME whereas the constants in DMSO are k1 = 4.5 s-1 M-1 and k-1 = 5.5 s-1 M-1s.

ChemElectroChem 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, Synthetic Route of 143-24-8.

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

Marques Mota, Filipe published the artcileRevisiting Solvent-Dependent Roles of the Electrolyte Counteranion in Li-O2 Batteries upon CO2 Incorporation, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is revisiting solvent dependent roles electrolyte counteranion lithium oxygen battery.

Lithium-oxygen batteries are promising next-generation high-energy storage candidates. Replacing pure O2 with air and uncovering moisture and CO2-contamination effects on the O2 electrochem., however, represent necessary steps toward commercialization. Representatively, a CO2-induced shift toward Li2CO3 formation has been systematically disclosed in a number of electrolyte solvents. Here, we show that in tetraglyme only Li2CO3 is formed without Li2O2. Using explicit theor. calculations, we reveal that discharge is governed by the strong chelation effect induced by oxygen lone electron pairs of the glyme, which emphasizes the importance of assessing direct interat. interactions between Li+ and solvent mols. when determining preferred reaction pathways in these O2/CO2 systems. The choice of the electrolyte counteranion investigated here for the first time, however, has no apparent effect on the O2/CO2 electrochem., leading to Li2CO3. Galvanostatic results and product analysisnonetheless reveal that highly dissociated Li+ counteranions in tetraglyme favorably stabilize soluble peroxocarbonate reaction intermediates during discharge, whereas highly associated salts accelerate Li2CO3 precipitation, dramatically narrowing the cell capacity. Importantly, these observations are also distinct from prior conclusions from rationally designed electrolytes under pure O2 conditions and emphasize the need to revisit established correlations between uncovered counteranion···Li+···solvent interaction degrees and the balance between mechanistic pathways in practical Li-air devices.

ACS Applied Energy Materials 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

Arai, Nana published the artcileDynamic Chelate Effect on the Li+-Ion Conduction in Solvate Ionic Liquids, Computed Properties of 143-24-8, the main research area is glyme chain length lithium conductivity solvate ionic liquid.

Lithium-glyme solvate ionic liquids (Li-G SILs), which typically consist of a lithium-ion (Li+) solvated by glymes of oligoethers and its counter anion, are expected as promising electrolytes for lithium secondary batteries. Addnl., a specific ligand-exchange Li+ conduction mechanism was proposed at the electrode/electrolyte interface of the cell using Li-G SILs. To reveal Li+ conduction in SILs, Li-G SILs with varying ethylene oxide chain lengths were investigated using various techniques that are sensitive to solution structure and dynamics. We found good correlations between the relaxation time of the slowest dielec. mode and the ionic conductivity as well as viscosity. We propose that a dynamic chelate effect, which is closely related to solvent exchange and/or contact ion-pair formation/dissociation, is important for Li+ conduction in these Li-G SILs.

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, Computed Properties of 143-24-8.

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

Kwak, Won-Jin published the artcileOptimized Electrolyte with High Electrochemical Stability and Oxygen Solubility for Lithium-Oxygen and Lithium-Air Batteries, Product Details of C10H22O5, the main research area is lithium air oxygen battery electrolyte electrochem stability solubility.

Lithium-oxygen (Li-O2) batteries with high reversibility require a stable electrolyte against the side reactions with Li-metal anode and reactive oxygen species. Moreover, an electrolyte that can effectively utilize the low partial pressure of oxygen in the atm. has significant effect on the practical application of Li-air batteries. In this study, a localized high-concentration electrolyte (LHCE) was developed using 1H,1H,5H-octafluoropentyl 1,1,2,2-tetrafluoroethyl ether (OTE) as a diluent, which satisfies all these conditions simultaneously. The OTE-based LHCE exhibits much improved electrochem. performance in Li-O2 batteries and Li-air batteries in comparison to the conventional electrolyte and high-concentration electrolyte. The design principles of this electrolyte also provide important guidelines for research to further develop new electrolytes for Li-O2 and Li-air batteries.

ACS Energy Letters 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, Product Details of C10H22O5.

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