Category: 143-24-8

Li, Zhenyu published the artcilePdCoNi alloy nanoparticles decorated, nitrogen-doped carbon nanotubes for highly active and durable oxygen reduction electrocatalysis, Quality Control of 143-24-8, the main research area is alloy PdCoNi nitrogen doped carbon nanotube oxygen reduction electrocatalyst.

Alloying Pd with transition metals is an effective strategy to enhance its catalytic activity toward oxygen reduction reaction (ORR). However, these catalysts always suffer from poor durability due to metal leaching during ORR. Herein, the catalyst of PdCoNi alloy nanoparticles supported on nitrogen-doped carbon nanotubes (PdCoNi/NCNTs) is prepared via one-pot solvothermal method and subsequent calcination. Introducing Co and Ni into Pd lattice not only boosts the catalytic activity, but also promotes the stability of the catalyst. As a result, the PdCoNi/NCNTs catalyst achieves a half-wave potential of 0.907 V and a specific activity of 3.78 mA/cm2 at 0.9 V vs. RHE, with 10 mV pos. shift and 17.2 times enhancement over the com. Pt/C catalyst in alk. solution Meanwhile, PdCoNi/NCNTs show much improved durability, with only 5 mV shift in the half-wave potential after 10,000 cycles, remarkably superior to those of PdCo/NCNTs, PdNi/NCNTs, and Pd/NCNTs. Valence band photoemission spectral anal. and theor. calculations indicate that the existence of Co and Ni can tune the electronic structure of Pd by compressive strain effect and coordination effect, facilitating the activation of O2 and stabilizing the alloy elements, thus delivering a desired ORR activity and stability. Meanwhile, the high stability and intrinsic catalytic activity of NCNTs is also beneficial to ORR. Furthermore, PdCoNi/NCNTs also exhibit high performance as the air cathode catalysts in lithium-air battery.

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

Wang, Jiaqi published the artcileRoom-Temperature Flexible Quasi-Solid-State Rechargeable Na-O2 Batteries, HPLC of Formula: 143-24-8, the main research area is flexible sodium oxygen battery solid state polymer electrolyte nanocomposite.

Rechargeable Na-O2 batteries have been regarded as promising energy storage devices because of their high energy d., ultralow overpotential, and abundant resources. Unfortunately, conventional Na-O2 batteries with a liquid electrolyte often suffer from severe dendrite growth, electrolyte leakage, and potential H2O contamination toward the Na metal anode. Here, we report a quasi-solid-state polymer electrolyte (QPE) composed of poly(vinylidene fluoride-co-hexafluoropropylene)-4% SiO2-NaClO4-tetraethylene glycol di-Me ether for rechargeable Na-O2 batteries with high performance. D. functional theory calculations reveal that the fluorocarbon chains of QPE are beneficial for Na+ transfer, resulting in a high ionic conductivity of 1.0 mS cm-1. Finite element method simulations show that the unique nanopore structure and high dielec. constant of QPE can induce a uniform distribution of the elec. field during charge/discharge processes, thus achieving a homogeneous deposition of Na without dendrites. Moreover, the nonthrough nanopore structure and hydrophobic behavior resulting from fluorocarbon chains of QPE could effectively protect Na anode from H2O erosion. Therefore, the fabricated quasi-solid-state Na-O2 batteries exhibit an average Coulombic efficiency of up to 97% and negligible voltage decay during 80 cycles at a discharge capacity of 1000 mAh g-1. As a proof of concept, flexible pouch-type Na-O2 batteries were assembled, displaying stable electrochem. performance for ~400 h after being bent from 0 to 360°. This work demonstrates the application of the quasi-solid-state electrolyte for high-performance flexible Na-O2 batteries. On the basis of a quasi-solid-state electrolyte, flexible Na-O2 batteries with high electrochem. performance are achieved for broad applications.

ACS Central Science published new progress about Adsorption energy. 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

Yu, Xueqing published the artcileSub-Nanometer Pt Clusters on Defective NiFe LDH Nanosheets as Trifunctional Electrocatalysts for Water Splitting and Rechargeable Hybrid Sodium-Air Batteries, COA of Formula: C10H22O5, the main research area is platinum cluster nickel iron layered double hydroxide nanosheet electrocatalyst; water splitting electrocatalyst layered double hydroxide nanosheet; cation vacancies; hybrid Na−air battery; layered double hydroxide; sub-nm Pt; water splitting.

It is challenging to develop highly efficient and stable multifunctional electrocatalysts for improving the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and the oxygen reduction reaction (ORR) for sustainable energy conversion and storage systems such as water-alkali electrolyzers (WAEs) and hybrid sodium-air batteries (HSABs). In this work, sub-nm Pt nanoclusters (NCs) on defective NiFe layered double hydroxide nanosheets (NixFe LDHs) are synthesized by a facile electrodeposition method. Due to the synergistic effect between Pt NCs and abundant at. M(II) defects, along with hierarchical porous nanostructures, the Pt/NixFe LDHs catalysts exhibit superior trifunctional electrocatalytic activity and durability toward the HER/OER/ORR. A WAE fabricated with Pt/NixFe LDHs electrodes needs 1.47 V to reach a c.d. of 10 mA cm-2, much lower than that of the mixed 20% Pt/C and 20% Ir/C catalysts. An HSAB assembled by Pt/NixFe LDHs as a binder-free air cathode displays a high open-circuit voltage, a narrow overpotential gap, and remarkable recharge-ability. This work provides a feasible strategy for constructing freestanding efficient trifunctional electrocatalysts for sustainable energy conversion and storage systems.

ACS Applied Materials & Interfaces published new progress about Adsorption energy. 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

Zebarjad, Fatemeh Sadat published the artcileExperimental Investigation of the Application of Ionic Liquids to Methanol Synthesis in Membrane Reactors, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is ionic liquid methanol membrane reactor.

In this study, a high-pressure membrane reactor (MR) was employed to carry out the methanol synthesis (MeS) reaction. Syngas was fed into the MR shell side where a com. MeS catalyst was used, while the tube side was swept with a high b.p. liquid with good solubility toward methanol. A mesoporous alumina ceramic membrane was utilized after its surface had been modified to be rendered more hydrophobic. The efficiency of the MR was investigated under a variety of exptl. conditions (different pressures, temperatures, sweep liquid flow rates, and types of sweep liquids). The results reveal improved per single-pass carbon conversions when compared to the conventional packed-bed reactor. An ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate, was utilized in the MR as the sweep liquid The exptl. results are compared to those previously reported by our group (Li, Z.; Tsotsis, T. T. J. Membrane Sci. 2019, 570, 103) while using a conventional petroleum-derived solvent as sweep liquid, tetraethylene glycol di-Me ether (TGDE). Enhanced carbon conversion (over the petroleum-derived solvent) was obtained using the IL.

Industrial & Engineering Chemistry Research published new progress about Ceramic membranes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Name: 2,5,8,11,14-Pentaoxapentadecane.

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

Taylor, Morgan E. published the artcileExamining the Impact of Polyzwitterion Chemistry on Lithium Ion Transport in Ionogel Electrolytes, Synthetic Route of 143-24-8, the main research area is examining polyzwitterion chem lithium ion transport ionogel electrolyte.

A series of polyzwitterion-supported gels featuring two classes of lithium-containing ionic liquid (IL) electrolytes have been created to examine the impact of different zwitterionic (ZI) group chemistries on lithium ion conductivity in these nonvolatile electrolytes. ZI homopolymer-supported gels containing poly(carboxybetaine methacrylate) (pCBMA), poly(2-methacryloyloxyethylphosphorylcholine) (pMPC), poly(sulfobetaine vinylimidazole) (pSBVI), and poly(sulfobetaine 2-vinylpyridine) (pSB2VP) were realized by rapid, in situ UV photopolymerization Within a 1 M solution of lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) in a conventional IL, strong Coulombic interactions between ZI moieties and Li+ cations promoted higher ion self-diffusivities for all zwitterion types and generated improved Li+ conductivities. In particular, the pCBMA and pMPC gels exhibited improved lithium transference numbers of 0.37 and 0.38, resp., compared to 0.23 for the IL solution In the solvate ionic liquid (SIL) prepared from an equimolar mixture of LiTFSI and tetraglyme, the pCBMA scaffold resulted in the largest room temperature Li+ conductivity achieved, 0.44 mS cm-1 (vs. 0.23 mS cm-1 in the neat SIL). The carboxybetaine ZI motif yielded the largest boost in Li+ conductivity in both IL electrolyte types, which was found to be correlated to this monomer generating the largest downfield 7Li NMR chem. shift in solution This study illustrates the great potential of polyzwitterions for future application in lithium ion batteries and reveals the importance of zwitterion chem. when selecting materials for nonaqueous ionogel electrolytes.

ACS Applied Polymer Materials published new progress about Coulomb potential. 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

Peddagopu, Nishant published the artcileA One-Pot Synthesis of “”K(hfa) glyme”” Adducts: Effect of the Polyether Length on the Ion Coordination Sphere, COA of Formula: C10H22O5, the main research area is potassium diketonate polyether polymeric complex preparation crystal structure; thermal stability potassium diketonate polyether polymeric complex.

Potassium complexes are starting to gather more and more interest from academia and industry because of their intriguing application possibilities. Novel adducts of potassium hexafluoroacetylacetonato [K(hfa)] with polyethers (monoglyme, diglyme, triglyme, and tetraglyme) were synthesized through a single step reaction and characterized through FTIR spectroscopy as well as 1H and 13C NMR spectroscopy. Single crystal x-ray diffraction studies enabled the identification of fascinating K coordination polymeric networks.

European Journal of Inorganic Chemistry published new progress about Crystal structure. 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

Zhang, Wenjing published the artcileWater-Induced Surface Reconstruction of Co3O4 on the (111) Plane for High-Efficiency Li-O2 Batteries in a Hybrid Electrolyte, Computed Properties of 143-24-8, the main research area is cobalt oxide cathode catalyst lithium oxygen battery; Co3O4; LiOH; Li−O2 battery; cathode catalyst; crystal plane effect.

The crystal plane effect of cobalt oxide has attracted much attention in Li-O2 batteries (LOBs) and other electrocatalytic fields. However, boosting the catalytic activity of a specific plane still faces significant challenges. Herein, a strategy of adding water into the electrolyte is developed to construct a LiOH-based Li-O2 battery system using the (111) plane-exposed Co3O4 as a cathode catalyst. The electrochem. performance shows that on the (111) plane, in the presence of water, the overpotential is largely reduced from 1.5 to 1.0 V and the cycling performance is enhanced. It is confirmed that during the discharge process, water reacts to form LiOH and induce the phase transformation of Co3O4 to amorphous CoOx(OH)y. At the recharge stage, LiOH is first decomposed and then CoOx(OH)y is reduced to Co3O4. Compared with pristine (111), the newly formed Co3O4 surface exhibits more active sites, which accelerates the following oxygen reduction and oxygen evolution processes. This work not only reveals the reaction mechanism of water-induced reaction on the (111) plane of Co3O4 but also provides a new perspective for further design of hybrid Li-O2 batteries with a low polarization and a longer cycle life.

ACS Applied Materials & Interfaces published new progress about Counter electrodes. 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

Cao, Deqing published the artcileThreshold potentials for fast kinetics during mediated redox catalysis of insulators in Li-O2 and Li-S batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is insulator threshold potential redox catalysis lithium sulfur battery.

Redox mediators could catalyze otherwise slow and energy-inefficient cycling of Li-S and Li-O2 batteries by shuttling electrons or holes between the electrode and the solid insulating storage materials. For mediators to work efficiently they need to oxidize the solid with fast kinetics but with the lowest possible overpotential. However, the dependence of kinetics and overpotential is unclear, which hinders informed improvement. Here, we find that when the redox potentials of mediators are tuned via, for example, Li+ concentration in the electrolyte, they exhibit distinct threshold potentials, where the kinetics accelerate several-fold within a range as small as 10 mV. This phenomenon is independent of types of mediator and electrolyte. The acceleration originates from the overpotentials required to activate fast Li+/e- extraction and the following chem. step at specific abundant surface facets. Efficient redox catalysis at insulating solids therefore requires careful consideration of the surface conditions of the storage materials and electrolyte-dependent redox potentials, which may be tuned by salt concentrations or solvents.

Nature Catalysis published new progress about Cyclic voltammetry. 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

Thangavel, Vigneshwaran published the artcileUnderstanding the Reaction Steps Involving Polysulfides in 1 M LiTFSI in TEGDME : DOL Using Cyclic Voltammetry Experiments and Modelling, Application In Synthesis of 143-24-8, the main research area is lithium bistrifluoromethanesulfonylimide tetraethylene glycol dimethy ether dioxolane cyclic voltammetry.

The reaction mechanisms of polysulfides in the electrolytes of lithium sulfur (Li-S) batteries are known to be complex. These reaction mechanisms may also change with the electrolyte used. Understanding the reaction steps of the polysulfides in a Li-S battery electrolyte is important to assess the underlying phenomena behind the Li-S cell performance limitations. Here, we investigate the reaction steps of polysulfides in electrolyte solutions containing S8, Li2S8 and Li2S6 in 1 M LiTFSI in TEGDME : DOL (volume/volume 1 : 1) (one of the most interesting electrolytes for use in Li-S batteries), using exptl. cyclic voltammetry and a math. model. The math. model assists in understanding the reaction steps behind the characteristics changes of cyclic voltammograms (CVs) with the scan rate and polysulfides speciation. Our systematic study shows that the reaction steps conventionally used in Li-S battery models are not sufficient to simulate all the CV characteristics of the investigated electrolyte solutions

Batteries & Supercaps published new progress about Cyclic voltammetry. 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

Fuladi, Shadi published the artcileMulticomponent Phase Separation in Ternary Mixture Ionic Liquid Electrolytes, Quality Control of 143-24-8, the main research area is phase separation mixture ionic liquid solvent lithium salt MD.

We investigate the phase behavior of ternary mixtures of ionic liquid, organic solvent, and lithium salt by mol. dynamics simulations. We find that at room temperature, the electrolyte separates into distinct phases with specific compositions; an ion-rich domain that contains a fraction of solvent mols. and a second domain of pure solvent. The phase separation is shown to be entropy-driven and is independent of lithium salt concentration Phase separation is only observed at microsecond time scales and greatly affects the transport properties of the electrolyte.

Journal of Physical Chemistry B published new progress about Diffusion (of Li+). 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