Tag: M.W=200-250

Du, Kang published the artcileInvestigations of Thermal Stability and Solid Electrolyte Interphase on Na2Ti3O7/C as a Non-carbonaceous Anode Material for Sodium Storage Using Non-flammable Ether-based Electrolyte, Product Details of C10H22O5, the main research area is sodium ion battery titanium oxide carbon anode electrolyte; anode; carbonate-based electrolyte; non-flammable electrolyte; sodium-ion battery; solid electrolyte interphase; tetraglyme.

In order to become com. viable, sodium-ion batteries need to deliver long cycle life with good capacity and energy d. while still ensuring safety. Electrolyte plays a key role forming solid electrolyte interphase (SEI) layers at low potential, which affects the thermal stability and cycle life of the anode materials under consideration. In this study, an ether-based non-flammable electrolyte, 1 M NaBF4 in tetraglyme, is tested for sodium storage using a non-carbonaceous anode material Na2Ti3O7/C, and the results are compared with those obtained with the popularly used carbonate-based electrolyte, 1 M NaClO4 in ethylene carbonate (EC) and propylene carbonate (PC) (volume/volume = 1:1). The Na2Ti3O7/C vs. Na cells using 1 M NaBF4 in tetraglyme show a much higher first cycle Coulombic efficiency (73%) than those using 1 M NaClO4 in EC/PC (33%). Thermal stability studies using differential scanning calorimetry (DSC) conclusively show that Na2Ti3O7/C electrodes cycled with 1 M NaBF4 in tetraglyme are more thermally stable than the one cycled with 1 M NaClO4 in EC/PC. Further investigations on the formation of SEI layers were performed using attenuated total reflection-Fourier transform IR spectroscopy, field-emission SEM, transmission electron microscopy, energy-dispersive X-ray spectroscopy, electrochem. impedance spectroscopy, and DSC studies. These studies unambiguously demonstrate that the SEI formed on Na2Ti3O7/C using 1 M NaBF4 in tetraglyme is not only less resistive but also more stable than the SEI formed using 1 M NaClO4 in EC/PC.

ACS Applied Materials & Interfaces published new progress about Battery anodes. 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

Kim, Jeongmin published the artcileInterfacial Electron Transfer and Ion Solvation in the Solid Electrolyte Interphase, Synthetic Route of 143-24-8, the main research area is interfacial electron transfer ion solvation battery solid electrolyte interphase; atomic resolution simulation solid polymer liquid electrolyte solvation.

As a chem. and structurally well-defined model for redox processes in the solid electrolyte interphase of battery electrodes, we investigate electron transfer (ET) to lithium ions at the interface between a platinum metal anode and a solid polymer electrolyte. Studied electrolytes include LiTFSI (lithium bis(trifluoromethane)sulfonimide) salts in polyethylene oxide and poly(diethylene oxide-alt-oxymethylene), as well as in the associated liquid electrolytes 1,2-dimethoxyethane and tetraglyme. Atomic-resolution simulations are performed with constant-potential polarizable electrodes to characterize interfacial ET kinetics, including lithium-ion solvation structures and solvent reorganization effects as a function of applied electrode potential. The linear-response assumptions of the Marcus theory for ET are found to be robust in these systems, yet ion-solvation behavior at the anode interface is strikingly dependent on chain connectivity, solvation environment, and the magnitude of the applied electrode potential, resulting in very different ET kinetics for lithium electroreduction

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

Su, N. C. published the artcilePotential complexes of NaCF3SO3-tetraethylene dimethyl glycol ether (tetraglyme)-based electrolytes for sodium rechargeable battery application, HPLC of Formula: 143-24-8, the main research area is sodium trifluoromethanesulfonate rechargeable battery.

The increasing energy demand on available global lithium resources has created concerns on development of new and advanced sustainable energy sources. Sodium-based batteries have emerged as promising substitutions to Li-based batteries. We describe here sodium trifluoromethanesulfonate (NaCF3SO3) electrolyte system based on tetraethylene glycol di-Me ether (tetraglyme). The ionic conductivity of the electrolytes showed a maximum value of 1.6 mS cm-1 for 40 mol% of NaCF3SO3 at room temperature and increased up to of 9.5 mS cm-1 at 373 K. The system showed the anodic stability of the electrolytes up to ca. 5.2 V (Na+/Na) and facile deposition of sodium began at relatively low overpotential, around – 0.01 V vs. Na+/Na, which showed a good reversibility of the electrolytes. Preliminary tests of the electrolyte in half sodium-ion cells employing Na3V2(PO4)3 as cathode electrodes were performed and the cells delivered capacity of 74 mAh g-1 at C/10.

Ionics published new progress about Battery anodes. 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

Zhang, Tao published the artcileBuilding high performance silicon-oxygen and silicon-sulfur battery by in-situ lithiation of fibrous Si/C anode, Application In Synthesis of 143-24-8, the main research area is silicon oxygen sulfur battery inSitu lithiation fibrous carbon anode.

Using Li metal-free anodes for Li-ion oxygen and Li-ion S batteries is considered as a promising solution to resolve the hazard of Li metal anode. Although Si anode exhibits high capacity and low electrochem. potential, it cannot match with O (or S) cathode, because both lack cycleable Li ions. Here, a free-standing and fibrous Si/C anode is prepared by electrospinning and its simple but effective lithiation is proposed. When assembling the cells, the free-standing Si/C anode was put between mass-controlled lithium metal foil and separator, and then the Si/C anode could be lithiated after adding electrolytes. By optimizing a LiFSI based ether electrolyte, the Si/C anode could achieve good cycleablity comparable to that in carbonate electrolytes. The lithiated Si-O cells exhibit better cycling stability than the Li-O cells with gel polymer electrolyte. Because both Si anode and S@pPAN cathode are compatible with carbonate electrolytes, exceptional cycling performance has been achieved for the lithiated Si-S cells. This simple method could pave the way to com. applications of Li-ion O and Li-ion S batteries.

Journal of Alloys and Compounds published new progress about Battery anodes. 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

Hu, Yi-Yang published the artcileLi0.5PAA domains filled in porous sodium alginate skeleton: A 3D bicontinuous composite network binder to stabilize micro-silicon anode for high-performance lithium ion battery, Quality Control of 143-24-8, the main research area is lithium PAA domain filled porous sodium alginate skeleton; bicontinuous composite network binder silicon anode lithium battery.

An important strategy to improve energy d. of Li-ion batteries is to substitute the traditional graphite anode by Si-based anode which is endowed with ultra-high theor. specific capacity. However, the commercialization of Si anodes is hindered by its huge volume variation that results in electrode pulverization. In the current study, the authors fill up the pores of Na alginate (SA) network with lithiated polyacrylic acid (LixPAA) to form a cross-linked bicontinuous composite network binder (b-Li0.5PAA@SA), in which the pores of the SA skeleton are dominated with the Li0.5PAA domains; within such composite the SA and Li0.5PAA interlock tightly each other via extensive interfacial ester bonding. The resulting b-Li0.5PAA@SA network binder can effectively buffer the volume variation of Si microparticles (m-Si) during repeating cycling and prevent pulverization of the electrode, which is evidenced by a cycling capacity of 2762 mAh g-1 in the 1st cycle and a retention of 1584 mAh g-1 after 150 cycles. As a comparison, the m-Si electrode with only SA binder suffers from fatal capacity degradation after merely 20 cycles under the same conditions. Also, since the Li0.5PAA domains are ionic conductive and significantly reduce the porosity of the SA network, the b-Li0.5PAA@SA network binder could also enable a stable solid electrolyte interphase (SEI) film and fast electron/ion transfer, leading to an enhanced rate capability of the m-Si anodes.

Electrochimica Acta published new progress about Battery anodes. 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

Ma, Jin-ling published the artcilePrevention of dendrite growth and volume expansion to give high-performance aprotic bimetallic Li-Na alloy-O2 batteries, HPLC of Formula: 143-24-8, the main research area is lithium sodium alloy oxygen battery dendrite growth volume expansion.

Rechargeable aprotic alkali metal (Li or Na)-O2 batteries are the subject of great interest because of their high theor. specific energy. However, the growth of dendrites and cracks at the Li or Na anode, as well as their corrosive oxidation lead to poor cycling stability and safety issues. Understanding the mechanism and improving Li/Na-ion plating and stripping electrochem. are therefore essential to realizing their technol. potential. Here, we report how the use of a Li-Na alloy anode and an electrolyte additive realizes an aprotic bimetal Li-Na alloy-O2 battery with improved cycling stability. Electrochem. investigations show that stripping and plating of Li and Na and the robust and flexible passivation film formed in situ (by 1,3-dioxolane additive reacting with the Li-Na alloy) suppress dendrite and buffer alloy anode volume expansion and thus prevent cracking, avoiding electrolyte consumption and ensuring high electron transport efficiency and continued electrochem. reactions.

Nature Chemistry published new progress about Battery anodes. 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

Go, Wooseok published the artcileNanocrevasse-Rich Carbon Fibers for Stable Lithium and Sodium Metal Anodes, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is alkali metal carbon composite lithium anode sodium anode scaffold; Alkali metal carbon composite; Li metal anode; Na metal anode; carbon scaffold; scalable production.

Metallic lithium (Li) and sodium (Na) anodes have received great attention as ideal anodes to meet the needs for high energy d. batteries due to their highest theor. capacities. Although many approaches have successfully improved the performances of Li or Na metal anodes, many of these methods are difficult to scale up and thus cannot be applied in the production of batteries in practice. In this work, we introduce nanocrevasses in a carbon fiber scaffold which can facilitate the penetration of molten alkali metal into a carbon scaffold by enhancing its wettability for Li/Na metal. The resulting alkali metal/carbon composites exhibit stable long-term cycling over hundreds of cycles. The facile synthetic method is enabled for scalable production using recycled metal waste. Thus, the addition of nanocrevasses to carbon fiber as a scaffold for alkali metals can generate environmentally friendly and cost-effective composites for practical electrode applications.

Nano Letters published new progress about Battery anodes. 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

Liu, Yangyang published the artcileElectro-Chemo-Mechanical Modeling of Artificial Solid Electrolyte Interphase to Enable Uniform Electrodeposition of Lithium Metal Anodes, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium metal anode electrodeposition; electrochemomech modeling artificial solid electrolyte.

Nonuniform electrodeposition of lithium during charging processes is the key issue hindering development of rechargeable Li metal batteries. This deposition process is largely controlled by the solid electrolyte interphase (SEI) on the metal surface and the design of artificial SEIs is an essential pathway to regulate electrodeposition of Li. In this work, an electro-chemo-mech. model is built and implemented in a phase-field modeling to understand the correlation between the phys. properties of artificial SEIs and deposition of Li. The results show that improving ionic conductivity of the SEI above a critical level can mitigate stress concentration and preferred deposition of Li. In addition, the mech. strength of the SEI is found to also mitigate non-uniform deposition and influence electrochem. kinetics, with a Young’s modulus around 4.0 GPa being a threshold value for even deposition of Li. By comparison of the results to exptl. results for artificial SEIs it is clear that the most important direction for future work is to improve the ionic conductivity without compromising mech. strength. In addition, the findings and methodol. presented here not only provide detailed guidelines for design of artificial SEI on Li-metal anodes but also pave the way to explore strategies for regulating deposition of other metal anodes.

Advanced Energy Materials published new progress about Battery anodes. 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

Haas, Ronja published the artcileUnderstanding transport of atmospheric gases in liquid electrolytes for lithium-air batteries, COA of Formula: C10H22O5, the main research area is atm gas transport liquid electrolyte lithium air battery.

In metal-air batteries, carbon dioxide (CO2) and nitrogen (N2) are, apart from oxygen (O2), also present as dissolved species in the liquid electrolyte. These dissolved gases can strongly influence the battery performance, as they affect the discharge mechanism and the stability of the lithium metal anode. Therefore, their solubility and diffusivity are important parameters, that are rarely considered in the development of electrolytes for metal-air batteries. Addnl., the diffusion coefficients are calculated through mol. dynamics simulations. The results agree well with the exptl. data. Furthermore, the influence of solvent parameters, such as surface tension and viscosity, on the solubility and the diffusivity as well as the impact of the addition of LiTFSI as conducting salt are investigated. The reported data will help to assess the impact of dissolved gases on the cell chem. of nonaqueous lithium-air batteries, especially on the solid electrolyte interphase (SEI) at the lithium anode, and to predict diffusivity and gas solubility in other electrolytes.

Journal of the Electrochemical Society published new progress about Battery anodes. 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

Guo, Huanhuan published the artcileFlexible rGO @ Nonwoven Fabrics’ Membranes Guide Stable Lithium Metal Anodes for Lithium-Oxygen Batteries, SDS of cas: 143-24-8, the main research area is graphene oxide nonwoven fabric membrane lithium oxygen battery anode.

Lithium-oxygen (Li-O2) batteries are outstanding as next-generation energy-storage devices because of their extremely high theor. specific energy d. However, their practical application is hindered by various issues from both unstable electrodes and electrolyte. Notably, the uncontrollable growth of a lithium dendrite and severe lithium pulverization deteriorates the practical energy d. and service life of Li-O2 batteries. Here we build a flexible protective membrane, which is reduced graphene oxide coated on nonwoven fabrics (rGO @ NWF), for a stable Li metal anode/electrolyte interface via a simple dipping-penetration and in situ electrochem. reduction strategy. The lowest lithium nucleation overpotential on rGO sheets results in the uniform lithium deposition behavior on the Li anode surface with the rGO protective nanofilm after different plating capacities, which is demonstrated by SEM anal. The cycling life of the Li-O2 cell with a rGO@NWF membrane extended to more than 500 cycles under the limited capacity of 500 mA h g-1, which is about 3-fold that of the pure Li anode. This work demonstrates a scalable approach to inhibit the growth of the lithium dendrite and corrosion of Li metal anodes by rGO nanofilm for long-term cycling Li-O2 batteries, holding an excellent potential for the development of other lithium metal batteries.

ACS Applied Energy Materials published new progress about Battery anodes. 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