Tag: M.W=200-250

Jiang, Yongxiang published the artcileMildly Oxidized MXene (Ti3C2, Nb2C, and V2C) Electrocatalyst via a Generic Strategy Enables Longevous Li-O2 Battery under a High Rate, Product Details of C10H22O5, the main research area is sodium ion battery cathode oxidized MXene electrocatalyst; Li−O2 battery; electrocatalysts; high current density; longevous; mildly oxidized MXene.

Lithium-oxygen batteries (LOBs) with ultrahigh theor. energy d. have emerged as one appealing candidate for next-generation energy storage devices. Unfortunately, some fundamental issues remain unsettled, involving large overpotential and inferior rate capability, mainly induced by the sluggish reaction kinetics and parasitic reactions at the cathode. Hence, the pursuit of suitable catalyst capable of efficiently catalyzing the oxygen redox reaction and eliminating the side-product generation, become urgent for the development of LOBs. Here, we report a universal synthesis approach to fabricate a suite of mildly oxidized MXenes (mo-Nb2CTx, mo-Ti3C2Tx, and mo-V2CTx) as cathode catalysts for LOBs. The readily prepared mo-MXenes possess expanded interlayer distance to accommodate massive Li2O2 formation, and in-situ-formed light metal oxide to enhance the electrocatalytic activity of MXenes. Taken together, the mo-V2CTx manages to deliver a high specific capacity of 22752 mAh g-1 at a c.d. of 100 mA g-1, and a long lifespan of 100 cycles at 500 mA g-1. More impressively, LOBs with mo-V2CTx can continuously operate for 90, 89, and 70 cycles, resp., under a high c.d. of 1000, 2000, and 3000 mA g-1 with a cutoff capacity of 1000 mAh g-1. The theor. calculations further reveal the underlying mechanism lies in the optimized surface, where the overpotentials for the formation/decomposition of Li2O2 are significantly reduced and the catalytic kinetics is accelerated. This contribution offers a feasible strategy to prepare MXenes as efficient and robust electrocatalyst toward advanced LOBs and other energy storage devices.

ACS Nano published new progress about Battery cathodes. 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

Liu, Dezhong published the artcileStable Room-Temperature Sodium-Sulfur Batteries in Ether-Based Electrolytes Enabled by the Fluoroethylene Carbonate Additive, SDS of cas: 143-24-8, the main research area is stable room temperature sodium sulfur battery ether electrolytes enabled; cathode−electrolyte interphase; electrolyte additive; room-temperature sodium−sulfur batteries; sulfurized polyacrylonitrile cathode; “solid−solid” conversion.

Because of its high energy d. and low cost, the room-temperature sodium-sulfur (RT Na-S) battery is a promising candidate to power the next-generation large-scale energy storage system. However, its practical utilization is hampered by the short life span owing to the severe shuttle effect, which originates from the “”solid-liquid-solid”” reaction mechanism of the sulfur cathode. In this work, fluoroethylene carbonate is proposed as an additive, and tetraethylene glycol di-Me ether is used as the base solvent. For the sulfurized polyacrylonitrile cathode, a robust F-containing cathode-electrolyte interphase (CEI) forms on the cathode surface during the initial discharging. The CEI prohibits the dissolution and diffusion of the soluble intermediate products, realizing a “”solid-solid”” reaction process. The RT Na-S cell exhibits a stable cycling performance: a capacity of 587 mA h g-1 is retained after 200 cycles at 0.2 A g-1 with nearly 100% Coulombic efficiency.

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

Wang, Qian published the artcileIntegrated 3D foam-like porous Ni3S2 as improved deposition support for high-performance Li-O2 battery, Application In Synthesis of 143-24-8, the main research area is porous nickel sulfide improved deposition support lithium oxygen battery.

The development of high efficiency air cathode plays important role in regulating the surface electrochem. process to enhance the performance of Li-O2 battery. Herein, we synthesize an integrated porous Ni3S2 on 3D Ni foam substrate through a facile MOF-derived route, the integrated 3D foam-like porous Ni3S2 catalyst can functional as both current collector and catalyst layer. Benefiting from the unique porous structure and the uniform regulate role of the surface electrochem. reaction, the integrated 3D foam-like catalyst cathode delivers nearly 3 times higher discharge capacity and longer cycling performance than that of the pristine Ni foam. More importantly, the morphol. of the formed discharge products exhibits lamellar-like structure and has large radial dimension, the Ni3S2 catalyst layer also plays the role of inducing the formation of LiO2 and decreasing the charge overpotential. This study opens a different and facile horizon to fabricate high-efficient air cathode.

Journal of Power Sources published new progress about Battery cathodes. 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

Yang, Yao published the artcileGolden Palladium Zinc Ordered Intermetallics as Oxygen Reduction Electrocatalysts, Product Details of C10H22O5, the main research area is golden palladium zinc ordered intermetallic oxygen reduction electrocatalyst nanocatalyst; Pt-free electrocatalysts; fuel cell; metal−air battery; ordered intermetallics; oxygen reduction reaction.

Exploring Pt-free electrocatalysts with high activity and long durability for the oxygen reduction reaction (ORR) has been long pursued by the renewable energy materials community. In this work, we have designed an ordered intermetallic PdZn/C (O-PdZn) with a several at.-layer Pd shell, which achieved a 3-fold enhancement in ORR mass activities (MA) in alk. media, relative to Pd/C and Pt/C. Further Au incorporation in O-PdZn/C (Au-O-PdZn/C) yielded a catalyst with superior durability with less than 10% loss in MA after 30000 potential cycles. These effects have attributed to the rationally designed ordered structure and stabilizing effect of Au atoms. Aberration-corrected scanning transmission electron microscopy and synchrotron-based X-ray fluorescence spectroscopy were employed to show that Au not only galvanically replaced Pd and Zn on the surface but also penetrated through the PdZn lattice and distributed uniformly within the particles. Au-O-PdZn/C was also tested as an effective oxygen cathode in broad applications in rechargeable Li-air and Zn-air batteries.

ACS Nano published new progress about Battery cathodes. 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

Li, Xuelian published the artcileBamboo-like nitrogen-doped carbon nanotube forests as durable metal-free catalysts for self-powered flexible Li-CO2 batteries, Synthetic Route of 143-24-8, the main research area is nitrogen carbon nanotube catalyst selfpowered lithium carbon dioxide battery; Li-CO2 batteries; flexible electrodes; metal-free bifunctional catalysts; nitrogen-doped carbon nanotubes; self-powered systems.

The Li-CO2 battery is a promising energy storage device for wearable electronics due to its long discharge plateau, high energy d., and environmental friendliness. However, its utilization is largely hindered by poor cyclability and mech. rigidity due to the lack of a flexible and durable catalyst electrode. Herein, flexible fiber-shaped Li-CO2 batteries with ultralong cycle-life, high rate capability, and large specific capacity are fabricated, employing bamboo-like N-doped carbon nanotube fiber (B-NCNT) as flexible, durable metal-free catalysts for both CO2 reduction and evolution reactions. Benefiting from high N-doping with abundant pyridinic groups, rich defects, and active sites of the periodic bamboo-like nodes, the fabricated Li-CO2 battery shows outstanding electrochem. performance with high full-discharge capacity of 23 328 mAh g-1, high rate capability with a low potential gap up to 1.96 V at a c.d. of 1000 mA g-1, stability over 360 cycles, and good flexibility. Meanwhile, the bifunctional B-NCNT is used as the counter electrode for a fiber-shaped dye-sensitized solar cell to fabricate a self-powered fiber-shaped Li-CO2 battery with overall photochem.-elec. energy conversion efficiency of up to 4.6%. Along with a stable voltage output, this design demonstrates great adaptability and application potentiality in wearable electronics with a breath monitor as an example.

Advanced Materials (Weinheim, Germany) published new progress about Battery cathodes. 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

Feng, Yaya published the artcileEnhanced Li2O2 Decomposition in Rechargeable Li-O2 Battery by Incorporating WO3 Nanowire Array Photocatalyst, Application In Synthesis of 143-24-8, the main research area is tungsten oxide nanowire lithium oxide oxidation photocatalyst low overpotential.

Reducing the high charging overpotential of nonaqueous Li-O2 batteries is very important for their energy storage ability. Herein, we propose a newly photoassisted Li-O2 battery system, in which a WO3 nanowires array that grows on carbon textile serves as a photocatalyst on the cathode. Because of its abundant holes excited by visible light, the Li2O2 coated on WO3 nanowires can be efficiently oxidized during the charging process, resulting in the reduced charging potential and enhanced Li-O2 battery performance. Notably, the charging potential can still maintain at 3.55 V even after 100 cycles in this photoassisted battery system, which is much lower than that of the dark state (4.4 V). These pos. results indicate that the introduction of WO3 nanowires array photocatalyst provides possibilities in improving the energy conversion efficiency of the Li-O2 battery.

ACS Sustainable Chemistry & Engineering published new progress about Battery cathodes. 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

Kim, Juhyoung published the artcileAn efficient electrocatalyst of NiO supported on carbon paper for nonaqueous Li-O2 batteries, Product Details of C10H22O5, the main research area is nickel oxide carbon lithium oxygen battery electrocatalyst polarization fabrication.

A Li-O2 battery has been considered as one of the most promising energy storage systems owing to their ultrahigh theor. energy densities. However, low energy efficiency (high polarization) during discharge/charge and resulting cycle stabilities have severely limited the development of this type of battery. Here, we demonstrate a simple preparation of NiO supported on carbon paper by dipping carbon paper in Ni acetate solution and heating it to apply NiO directly to the carbon as a cathode material for nonaqueous Li-O2 batteries. The prepared sample was confirmed as the structure of NiO-incorporated carbon using XPS, X-ray absorption spectroscopy (XAS), and high-resolution transmission electron microscopy (HR-TEM) anal. despite amorphous patterns seen in XRD (∼10% NiO in NiO supported on carbon paper). A Li-O2 cell in which the NiO supported on carbon paper was applied as an electrocatalyst showing an initial ∼ 6% increase in energy efficiency and a subsequent 50 cycle retention.

Ionics published new progress about Battery cathodes. 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

Zhang, Huang published the artcileSolvent-dictated sodium sulfur redox reactions: investigation of carbonate and ether electrolytes, Quality Control of 143-24-8, the main research area is redox reaction carbonate ether electrolyte sodium sulfur ion battery.

Sulfur-based cathode chemistries are essential for the development of high energy d. alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature The solvent is found to play a key role for the electrochem. reactivity of the sulfur cathode in sodium-sulfur (Na-S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochem. reversibility. On the other hand, an irreversible solution-phase reaction is observed in carbonate solvents. This study clearly reveals the solvent-dependent Na-S reaction pathways in room temperature Na-S batteries and provides an insight into realizing their high energy potential, via electrolyte formulation design.

Energies (Basel, Switzerland) published new progress about Battery cathodes. 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

Hu, Anjun published the artcileImproved Cyclability of Lithium-Oxygen Batteries by Synergistic Catalytic Effects of Two-Dimensional MoS2 Nanosheets Anchored on Hollow Carbon Spheres, Application In Synthesis of 143-24-8, the main research area is lithium oxygen battery composite catalyst molybdenum disulfide; hollow carbon sphere synergistic effect.

The design and development of high-efficient electrocatalysts plays a decisive role in improving the stability of lithium-oxygen (Li-O2) batteries. Here, two-dimensional (2D) MoS2 nanosheets anchored on hollow carbon spheres (MoS2/HCS) composites is designed and reported as promising cathode catalysts for Li-O2 batteries. The MoS2/HCS-based Li-O2 battery shows superior electrochem. performance, in terms of high capacity (4010 mA h g-1) and enhanced cycling performance (104 cycles). XPS results reveal that the formation of Li2CO3 and other side products can be effectively alleviated when MoS2/HCS electrode is used as the cathode. On the basis of exptl. studies, it is found that the synergistic effects, which originated from the superior catalytic property of MoS2 nanosheets and the good elec. conductivity of HCS with high surface area, is the main reason for performance improvement. The synergistic effects induced by the dispersed MoS2 nanosheets anchored on nanostructured HCS cathodes provide a promising strategy for developing catalysts of O2 electrode for Li-O2 batteries with excellent performance.

ACS Sustainable Chemistry & Engineering published new progress about Battery cathodes. 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

Zhao, Guangyu published the artcileCapacitive Behavior Based on the Ultrafast Mass Transport in a Self-Supported Lithium Oxygen Battery Cathode, Category: ethers-buliding-blocks, the main research area is lithium oxygen battery cathode wood derived substrate; metal organic framework derivate capacitive behavior.

The pore structures of lithium oxygen battery cathodes play a significant role in their reversibility and lifespan by deciding the mass transport in cathodes. In the present work, a porous Co3O4/C modified wood-derived slice is used as self-supported lithium oxygen battery cathode. The straight tubes in vertical and horizontal directions inherited from wood vessels afford the cathodes facilitated paths for gas and ion transport, resp. Furthermore, the homogeneous distribution of mesoporous Co3O4/C polyhedrons on tube wall of wood-derived substrates creates a uniform reaction interface in the cathodes. The ultrafast mass transport and uniform reaction interface lead to a capacitive contribution in battery capacity, owing to the fast kinetics that is free from the semi-infinite diffusion control. Accordingly, these merits enable the cathodes to have good reversibility and cyclability. The batteries can cycle more than 380 rounds without obvious overpotential variation at a c.d. of 1.0 mA cm-2 within a capacity limitation of 1.0 mAh cm-2.

ACS Applied Energy Materials published new progress about Battery cathodes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Category: ethers-buliding-blocks.

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