Tag: M.W=200-250

Guo, Huanhuan published the artcileStable Lithium Anode of Li-O2 Batteries in a Wet Electrolyte Enabled by a High-Current Treatment, COA of Formula: C10H22O5, the main research area is lithium anode secondary battery electrolyte current treatment.

Rechargeable Li-air (O2) batteries have attracted a great deal of attention because of their high theor. energy d. and been regarded as a promising next-generation energy storage technol. Among numerous obstacles to Li-air (O2) batteries preventing their use in practical applications, H2O is a representative impurity for Li-air (O2), which could hasten the deterioration of the anode and accelarate the premature death of cells. Here, the authors report an effective in situ high-current pretreatment process to enhance the cycling performance of Li-O2 batteries in a wet tetraethylene glycol di-Me ether-based electrolyte. With the help of certain levels of H2O (from 100 to 2000 ppm) in the electrolyte, adequate Li2O formed on the Li anode surface after high-current pretreatment, which is necessary for a robust and uniform solid electrolyte interphase layer to protect Li metal during the long-term discharge-charge cycling process. This in situ high-current pretreatment method in a wet electrolyte is an effective approach for enhancing the cycling performance of Li-O2 batteries with a stable Li metal anode and promoting the realization of practical Li-air batteries.

Journal of Physical Chemistry 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, COA of Formula: C10H22O5.

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

Hyun, Suyeon published the artcilePd nanoparticles deposited on Co(OH)2 nanoplatelets as a bifunctional electrocatalyst and their application in Zn-air and Li-O2 batteries, Computed Properties of 143-24-8, the main research area is palladium cobalt hydroxide bifunctional electrocatalyst zinc lithium oxygen battery.

The development of affordable electrocatalysts for both oxygen reduction and evolution reactions (ORR/OER) has received great interest due to their importance in metal-air batteries and regenerative fuel cells. We developed a high-performance bifunctional oxygen electrocatalyst based on Pd nanoparticles supported on cobalt hydroxide nanoplatelets (Pd/Co(OH)2) as an air cathode for metal-air batteries. The Pd/Co(OH)2 shows remarkably higher electrocatalytic activity in comparison with com. catalysts (Pt/C, IrO2), including an ORR half-wave potential (E1/2) of 0.87 V vs. RHE and an OER overpotential of 0.39 V at 10 mA cm-2 in aqueous alk. medium. The Zn-air battery constructed with Pd/Co(OH)2 presents stable charge/discharge voltage (ΔEOER-ORR = 0.69 V), along with durable cycling stability for over 30 h. Also, this cathode exhibits a maximum discharge capacity of 17 698 mA h g-1, and stable battery operation over 50 cycles at a fixed capacity of 1000 mA h g-1, as an efficient air electrode for Li-O2 batteries, indicating that Pd/Co(OH)2 can be a potential candidate for both aqueous and non-aqueous metal-air batteries.

Nanoscale published new progress about Binding energy. 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

Ryskulova, Kanykei published the artcileEffect of Host-Guest Complexation on the Thermoresponsive Behavior of Poly(oligo ethylene glycol acrylate)s Functionalized with Dialkoxynaphththalene Guest Side Chains, Name: 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is host guest complexation thermoresponsive behavior polyoligoethyleneglycol acrylate functionalized dialkoxynaphththalene; LCST; host-guest complexation; responsive polymers; supramolecular chemistry.

The combination of thermoresponsive polymers with supramol. host-guest interactions enables accurate tuning of the phase transition temperature, while also providing addnl. response mechanisms based on host-guest complexation. Most studies focused on a single thermoresponsive polymer to demonstrate the effect of host-guest complexation on the responsive behavior. In this work, the effect of the polymer structure on the host-guest complexation and thermoresponsive behavior is reported. Therefore, different poly(oligoethylene glycol acrylate)s, namely, poly(2-hydroxyethylacrylate) (PHEA), poly(methoxy diethylene glycol acrylate), poly(methoxy triethylene glycol acrylate), and poly(methoxy tetraethylene glycol acrylate), are synthesized functionalized with 1,5-dialkoxynaphthalene guest mols. in the side chain. Their complexation with the cyclobis(paraquat-p-phenylene) tetrachloride host is studied to understand the effect of polymer structure on the supramol. association and the polymer phase transition, revealing that the oligoethylene glycol side chains lead to weaker host-guest complexation and also have a smaller increase in the cloud point temperature compared to PHEA.

Macromolecular Rapid Communications published new progress about Binding energy. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Name: 2,5,8,11-Tetraoxatridecan-13-ol.

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

Beichel, Witali published the artcileAn Artificial SEI Layer Based on an Inorganic Coordination Polymer with Self-Healing Ability for Long-Lived Rechargeable Lithium-Metal Batteries, Quality Control of 143-24-8, the main research area is rechargeable lithium metal battery SEI layer coordination polymer.

Upon immersion of a lithium (Li) anode into a diluted 0.05 to 0.20 M dimethoxyethane solution of the phosphoric-acid derivative (CF3CH2O)2P(O)OH (HBFEP), an artificial solid-electrolyte interphase (SEI) is generated on the Li-metal surface. Hence, HBFEP reacts on the surface to the corresponding Li salt (LiBFEP), which is a Li-ion conducting inorganic coordination polymer. This film exhibits – due to the reversibly breaking ionic bonds – self-healing ability upon cycling-induced volume expansion of Li. The presence of LiBFEP as the major component in the artificial SEI is proven by ATR-IR and XPS measurements. SEM characterization of HBFEP-treated Li samples reveals porous layers on top of the Li surface with at least 3μm thickness. Li-Li sym. cells with HBFEP-modified Li electrodes show a three- to almost fourfold cycle-lifetime increase at 0.1 mA cm-2 in a demanding model electrolyte that facilitates fast battery failure (1 M LiOTf in TEGDME). Hence, the LiBFEP-enriched layer apparently acts as a Li-ion conducting protection barrier between Li and the electrolyte, enhancing the rechargeability of Li electrodes.

Batteries & Supercaps published new progress about Binding 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

Xing, Da published the artcileInsertion of Magnesium into Antimony Layers on Gold Electrodes:Kinetic Behaviour, Application In Synthesis of 143-24-8, the main research area is magnesium antimony layer gold electrode kinetic behavior diffusion coefficient.

Magnesium based secondary batteries are regarded as a viable alternative to the immensely popular Li-ion systems. One of the largest challenges is the selection of a Mg anode material since the insertion/extraction processes are kinetically slow because of the large ionic radius and high charge d. of Mg2+. In an attempt to bridge the gap between insertion measurements in 3D composite electrode materials and that in an idealized pure model system, we studied the insertion and diffusion of Mg in a thin, massive layer of Sb deposited on Au by using PITT, CV, and potential step experiments Sb has been suggested as an insertion material because magnesium can form intermetallic compound with it. The layered crystal structure of Sb leads should facilitate formation of such an intermetallic phase. Mg insertion from a MACC/tetraglyme electrolyte into Sb starts 300 mV pos. of the onset potential of Mg deposition as shown by cyclic voltammetry. The molar ratio of Mg to Sb agrees well with the stoichiometry of Mg3Sb2 alloy (Zintl-phase). The diffusion coefficient of Mg-insertion into Sb – layers and the charge transfer rate have been estimated by the above techniques. Such diffusion coefficients, albeit still somewhat “”apparent””, are much more closely related to the true diffusion coefficient in the metal or alloy. The solid-state diffusion coefficient of Mg into the Sb layers is in the range of 4-8×10-14 cm2 s-1. A very high Tafel slope of 370 mV/dec was found in potential step experiments Mg insertion was further investigated by XPS measurements. Besides Mg and Sb, Al and Cl signals were also detected, particularly at the outer parts of the layer.

ChemElectroChem published new progress about Binding energy. 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

Hegde, Guruprasad S. published the artcileEntropy Stabilized Oxide Nanocrystals as Reaction Promoters in Lithium-O2 Batteries, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium peroxide nanocrystal secondary battery electrochem performance.

Charge transport limitations at the Li2O2 discharge product-electrode interfaces hinder the rechargeability of Li-O2 batteries. Herein, we introduce entropy stabilized oxides (ESO) as reaction promoters in pos. electrodes that can facilitate charge transport by reducing the binding energy of the intermediates. In this work, we developed a rock-salt type entropy stabilized oxide. We show that the rock salt phase transforms into a pure, equimolar, quinary spinel on heat treatment. A Li-O2 battery with the developed ESOs at the pos. electrode is cycled with an areal capacity of 1 mAh cm-2 at a current rate of 0.25 mA cm-2 to study its role as a reaction promoter. The surface, bulk, and morphol. characterization are carried out for both materials. The presence of multiple cations and defects on the surface of the ESO is found to benefit the discharge product oxidation and improve the cyclic stability.

Batteries & Supercaps published new progress about Binding energy. 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

Tang, Xiao published the artcileA universal strategy towards high-energy aqueous multivalent-ion batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is energy storage mol dynamics multivalent ion battery.

Rechargeable multivalent metal (e.g., Ca, Mg or, Al) batteries are ideal candidates for large-scale electrochem. energy storage due to their intrinsic low cost. However, their practical application is hampered by the low electrochem. reversibility, dendrite growth at the metal anodes, sluggish multivalent-ion kinetics in metal oxide cathodes and, poor electrode compatibility with non-aqueous organic-based electrolytes. To circumvent these issues, here we report various aqueous multivalent-ion batteries comprising of concentrated aqueous gel electrolytes, sulfur-containing anodes and, high-voltage metal oxide cathodes as alternative systems to the non-aqueous multivalent metal batteries. This rationally designed aqueous battery chem. enables satisfactory specific energy, favorable reversibility and improved safety. As a demonstration model, we report a room-temperature calcium-ion/sulfur| |metal oxide full cell with a specific energy of 110 Wh kg-1 and remarkable cycling stability. Mol. dynamics modeling and exptl. investigations reveal that the side reactions could be significantly restrained through the suppressed water activity and formation of a protective inorganic solid electrolyte interphase. The unique redox chem. of the multivalent-ion system is also demonstrated for aqueous magnesium-ion/sulfur||metal oxide and aluminum-ion/sulfur||metal oxide full cells.

Nature Communications published new progress about Binding energy. 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

Lai, Wei-Hong published the artcileSelf-assembling RuO2 nanogranulates with few carbon layers as an interconnected nanoporous structure for lithium-oxygen batteries, Application In Synthesis of 143-24-8, the main research area is ruthenium oxide carbon lithium oxygen battery nanostructure.

Electrocatalysis for cathodic oxygen is of great significance for achieving high-performance lithium-oxygen batteries. Herein, we report a facile and green method to prepare an interconnected nanoporous three-dimensional (3D) architecture, which is composed of RuO2 nanogranulates coated with few layers of carbon. The as-prepared 3D nanoporous RuO2@C nanostructure can demonstrate a high initial specific discharge capacity of 4000 mA h g-1 with high round-trip efficiency of 95%. Meanwhile, the nanoporous RuO2@C could achieve stable cycling performance with a fixed capacity of 1500 mA h g-1 over 100 cycles. The terminal discharge and charge potentials of nanoporous RuO2@C are well maintained with minor potential variation of 0.14 and 0.13 V at the 100th cycle, resp. In addition, the formation of discharge products is monitored by using in situ high-energy synchrotron X-ray diffraction (XRD).

Chemical Communications (Cambridge, United Kingdom) published new progress about Binding energy. 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

Kakiuchi, Ryo published the artcileA 19F-MRI probe for the detection of Fe(II) ions in an aqueous system, Formula: C9H20O5, the main research area is MRI probe detection iron.

Iron deposits are often observed in the brains of patients with neurodegenerative diseases, including Alzheimer′s and Parkinson′s diseases. This study outlines the development of F-Nox-1 (I) as the first example of a 19F-MRI probe that can selectively detect Fe(II) in aqueous solutions The use of tetrafluoro-p-phenylenediamine (TFPDA) as a 19F signal emitter with an Fe(II)-selective chem. switch, based on our previously reported N-oxide chem., yielded a readout of a symmetry-dependent 19F signal change in response to Fe(II). The addition of Fe(II) ions to F-Nox-1 triggered a 19F signal change, both in the chem. shift and signal intensity, and the response was highly selective to Fe(II) over other biol. relevant metal ions. The probe could also detect Fe(II) in serum containing various biol. contaminants by 19F magnetic resonance imaging (19F-MRI). Imaging of soluble Fe(II) species, which is the major component of water-soluble iron species, by 19F-MRI will potentially enable the direct monitoring of the elevation of Fe(II) levels prior to the formation of iron deposits, which is a potential risk factor for neurodegenerative diseases.

Organic & Biomolecular Chemistry published new progress about Blood analysis. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Formula: C9H20O5.

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

Kim, Hee-Sang published the artcileEffect of Urea as Electrolyte Additive for Stabilization of Lithium Metal Electrodes, COA of Formula: C10H22O5, the main research area is urea electrolyte additive lithium metal electrode stabilization.

Owing to its lowest standard redox potential, low d., and high theor. specific capacity, lithium metal has been considered to be the ideal anode material for secondary lithium batteries. However, lithium metal is thermodynamically unstable in liquid organic electrolytes (LOEs). When lithium metal comes in contact with an LOE, it reacts easily with it to form the solid electrolyte interphase (SEI) layer. Once the stable and robust SEI layer forms, it can inhibit the direct contact between lithium metal and LOE and the further decomposition of the electrolyte. Nevertheless, the inhomogeneity in chem. composition or thickness of the SEI layer can cause the growth of lithium dendrites, which lead to short-circuits in batteries. In this study, we suggested the use of urea as a new electrolyte additive to restrain the growth of lithium dendrites via the formation of a uniform and robust SEI layer on the lithium surface. The Li sym. cell with 0.5 M urea electrolyte additive exhibited better cyclability over 415 cycles at 1 mA cm-2; this number of cycles was >40 times larger than that of the Li sym. cell without urea additive. Further, the Li-O2 cell with electrolyte additive was cycled for more than 200 cycles at 0.1 mA cm-2 under the limited capacity mode of 1000 mA h g-1. The enhancement of the cyclability of Li metal-based batteries using urea as an electrolyte additive suppresses the growth of lithium dendrites.

ACS Sustainable Chemistry & Engineering 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