Tag: M.W=200-250

Cheng, Eric Jianfeng published the artcileCeramic-Based Flexible Sheet Electrolyte for Li Batteries, SDS of cas: 143-24-8, the main research area is lanthanum lithium zirconium oxide flexible electrolyte lithium metal battery; quasisolid electrolyte ionic liquid activation energy; Li-metal batteries; Li7La3Zr2O12; activation energy; flexible electrolyte; ionic liquid; quasi-solid electrolyte; room-temperature synthesis.

The increasing demand for high-energy-d. batteries stimulated the revival of research interest in Li-metal batteries. The garnet-type ceramic Li7La3Zr2O12 (LLZO) is one of the few solid-state fast-ion conductors that are stable against Li metal. However, the densification of LLZO powders usually requires high sintering temperatures (e.g., 1200°C), which likely result in Li loss and various side reactions. From an engineering point of view, high-temperature sintering of thin LLZO electrolytes (brittle) at a large scale is difficult. Moreover, the high interfacial resistance between the solid LLZO electrolytes and electrodes is a notorious problem. Here, we report a practical synthesis of a flexible composite Al-doped LLZO (Al-LLZO) sheet electrolyte (75μm in thickness), which can be mass-produced at room temperature This ceramic-based flexible sheet electrolyte enables Li-metal batteries to operate at both 60 and 30°C, demonstrating its potential application for developing practical Li-metal batteries.

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

Feng, Ningning published the artcileMechanism-of-Action Elucidation of Reversible Li-CO2 Batteries Using the Water-in-Salt Electrolyte, Synthetic Route of 143-24-8, the main research area is lithium carbon dioxide battery CNT cathode water salt electrolyte; CO2-to-Li2C2O4 conversion; Li2CO3; Li−CO2 batteries; electrochemistry mechanism; water-in-salt.

Li-CO2 batteries have attracted worldwide attention because of their dual characteristics of high energy d. and effective CO2 capture. However, the basic electrochem. mechanism involved has been unclear, which is mainly confused by the complicated decomposition of organic electrolytes. Herein, water-in-salt (WIS, LiTFSI/H2O 21.0 mol/1 kg) has been explored as a suitable electrolyte for the first time to investigate the reaction mechanism of Li-CO2 batteries with different cathodes (carbon nanotube (CNT) and Mo2C/CNT, resp.). An Mo2C-based Li-CO2 battery with WIS delivers a higher energy efficiency of 83% and a superior cyclability, compared to those of the CNT-based counterpart cell. Through various ex/in situ qual./quant. characterizations, the Mo2C-based Li-CO2 battery with WIS can operate on the reversible conversion of CO2-to-Li2C2O4 ((e-/CO2)ideal = 1) at lower discharge/charge overpotentials, while the CNT-based counterpart cell is based on the formation/decomposition of Li2CO3 ((e-/CO2)ideal ≈ 1.33) at high overpotentials. Such a difference in CO2 reduction products stems from the stronger interaction between Mo2C(101) and Li2C2O4 than that of the CNT and Li2C2O4 based on the d. functional theory calculations, resulting in the selective stabilization of the intermediate product Li2C2O4 on the Mo2C surface.

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, Synthetic Route of 143-24-8.

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

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

Mikesell, Logan published the artcileStepwise PEG synthesis featuring deprotection and coupling in one pot, Application of 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is polyethylene glycol deprotection coupling one pot synthesis; PEG; base-labile; monodisperse; polyethylene glycol; protecting group.

The stepwise synthesis of monodisperse polyethylene glycols (PEGs) and their derivatives usually involves using an acid-labile protecting group such as DMTr and coupling the two PEG moieties together under basic Williamson ether formation conditions. Using this approach, each elongation of PEG is achieved in three steps – deprotection, deprotonation and coupling – in two pots. Here, we report a more convenient approach for PEG synthesis featuring the use of a base-labile protecting group such as the phenethyl group. Using this approach, each elongation of PEG can be achieved in two steps – deprotection and coupling – in only one pot. The deprotonation step, and the isolation and purification of the intermediate product after deprotection using existing approaches are no longer needed when the one-pot approach is used. Because the stepwise PEG synthesis usually requires multiple PEG elongation cycles, the new PEG synthesis method is expected to significantly lower PEG synthesis cost.

Beilstein Journal of Organic Chemistry published new progress about Coupling reaction. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Application of 2,5,8,11-Tetraoxatridecan-13-ol.

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

Lin, Qianming published the artcileKinetic trapping of 3D-printable cyclodextrin-based poly(pseudo)rotaxane networks, HPLC of Formula: 23783-42-8, the main research area is cyclodextrin polypseudo rotaxane network three dimensional printing.

Synthetically trapping kinetically varied (super)structures of mol. assemblies and amplifying them to the macroscale is a promising, yet challenging, approach for the advancement of meta-stable materials. Here, we demonstrated a concerted kinetic trapping design to timely resolve a set of transient polypseudorotaxanes in solution and harness a crop of them via micro-crystallization By installing stopper or speed bump moieties on the polymer axles, meta-stable polypseudorotaxanes with segmented cyclodextrin blocks were hierarchically amplified into crystalline networks of different crosslinking densities at mesoscale and viscoelastic hydrogels with 3D-printability in bulk. We demonstrated simultaneous 3D-printing of two polypseudorotaxane networks from one reactive ensemble and their conversion to heterogeneous polyrotaxane monoliths. Spatially programming the macroscale shapes of these heterogeneous polyrotaxanes enabled the construction of moisture-responsive actuators, in which the shape morphing originated from the different numbers of cyclodextrins interlocked in these polyrotaxane networks.

Chem published new progress about Crystal structure. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, HPLC of Formula: 23783-42-8.

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