Month: November 2022

Han, Fengfeng published the artcileV2CTX catalyzes polysulfide conversion to enhance the redox kinetics of Li-S batteries, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is vanadium carbide polysulfide conversion redox kinetics lithium sulfur battery.

Lithium-sulfur (Li-S) batteries have the potential to become the future energy storage system, yet they are plagued by sluggish redox kinetics. Therefore, enhancing the redox kinetics of polysulfides is key for the development of high-energy d. and long-life Li-S batteries. Herein, a Ketjen Black (KB)/V2CTX modified separator (KB/V2CTX-PP) based on the catalytic effect in continuous solid-to-liquid-to-solid reactions is proposed to accelerate the conversion of sulfur species during the charge/discharge process in which the V2CTX can enhance the redox kinetics and inhibit polysulfide shuttling. The cells assembled with KB/V2CTX-PP achieve a gratifying first discharge capacity of 1236.1 mA h g-1 at 0.2C and the average capacity decay per cycle reaches 0.049% within 1000 cycles at 1C. The work provides an efficient idea to accelerate redox conversion and suppress shuttle effects by designing a multifunctional catalytic separator.

Dalton Transactions 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, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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

He, Xin published the artcileInsights into the Ionic Conduction Mechanism of Quasi-Solid Polymer Electrolytes through Multispectral Characterization, Computed Properties of 143-24-8, the main research area is quasi solid polymer electrolyte ionic conduction mechanism multispectral characterization; ion transport mechanism; polyvinylidene fluoride-hexafluoropropylene; quasi-solid polymer electrolyte; spectroscopic characterization.

Quasi-solid polymer electrolytes (QPE) composed of Li salts, polymer matrix, and solvent, are beneficial for improving the security and energy d. of batteries. However, the ionic conduction mechanism, existential form of solvent mols., and interactions between different components of QPE remain unclear. Here we develop a multispectral characterization strategy combined with first-principles calculations to unravel aforesaid mysteries. The results indicate that the existential state of solvent in QPE is quite different from that in liquid electrolyte. The Li cations in gel polymer electrolyte are fully solvated by partial solvent mols. to form a local high concentration of Li+, while the other solvent mols. are fastened by polymer matrix in QPE. As a result, the solvation structure and conduction mechanism of Li+ are similar to those in high-concentrated liquid electrolyte. This work provides a new insight into the ionic conduction mechanism of QPE and will promote its application for safe and high-energy batteries.

Angewandte Chemie, International Edition 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, Computed Properties of 143-24-8.

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

Liu, Chao published the artcileBioenergy and emission characterizations of catalytic combustion and pyrolysis of litchi peels via TG-FTIR-MS and Py-GC/MS, HPLC of Formula: 121-00-6, the main research area is peel catalytic combustion pyrolysis bioenergy emission characteristics.

This study characterized the catalytic combustions and emissions of litchi peels as a function of five catalysts as well as the effect of the best catalyst on the pyrolysis byproducts. Na2CO3 and K2CO3 accelerated the devolatilization but delayed the coke burnout, while Al2O3 enhanced the coke oxidation rate. Both comprehensive combustion index and average activation energy dropped with the added catalysts. CO2, CO, and H2O were the main combustion gases between 300 and 510°C. CO2, C-H, C=O, and C-O were generated from the pyrolysis between 200 and 430°C above which CO2 and CH4 were slightly released. Total H2O, CO2, CO, NOx and SOx emissions declined with the added catalysts among which K2CO3 performed better. The main pyrolytic byproducts at 330°C were terpenoids and steroids (71.87%), phenols (15.51%), aliphates (9.95%), and small mols. (2.78%). At 500°C, terpenoids and steroids (78.35%), and small mols. (3.20%) rose, whereas phenols (12.87%), and aliphates (5.83%) fell. Fatty acid, and ester decreased, while terpenoids, and steroids increased with MgCO3 at 330°C. Litchi peels appeared to be a promising biowaste, with MgCO3 as the optimal catalytic option in terms of the bioenergy performance, and emission reduction

Renewable Energy published new progress about Activation energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, HPLC of Formula: 121-00-6.

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

Diao, Rui published the artcileFractional valorization of bio-oil distillation residue: Strategically perfecting the pivotal step of biomass refinery system, Quality Control of 121-00-6, the main research area is biooil distillation residue fractional valorization biomass refinery system.

With the gradual maturation of biomass refinery system, the eco-friendly disposal of bio-oil distillation residue (DR) is still required to be explored towards ecol. protection and contaminant management. Here, we proposed a fractional process for valorizing DR through coupling of torrefaction and KOH impregnation (KI), with the emphasis on thermolysis behaviors, kinetic responses, gaseous emissions, product distribution and pyrolytic mechanism. The results indicated low-temperature torrefaction (LTT) promoted the enhancement of pyrolysis rate and accelerated the emissions of light compounds The elevated temperatures for high-temperature torrefaction (HTT) weakened the pyrolysis rate, with the diminishment of 46.02-59.46%, while the subsequent KI process facilitated the pyrolysis rate of HTT-derived DR. The kinetic responses illustrated the activation energies with the enhancement of 21.93%-30.12% increased as pretreatment temperatures increased, ranging from 112.97 to 159.77 kJ/mol. Light torrefaction promoted the emissions of C=C, O-H, and C-H, while the phenols and hydrocarbons among pyrolyzates were the most susceptible to the sequential temperature-dependency responses. The fractional valorization process was more conducive to producing hydrocarbons, ketones, and furans, unfortunately with reductions in phenolic contents, which might be attributed to the hydrogenated DR and decreased ether bonds after torrefying. In addition, cooperating of LTT and subsequent KI was inclined to destroy microcrystalline structure and carbonaceous skeleton for the sake of promoting reaction rate, whereas HTT-derived DR endowed a stable carbon skeleton, which was against the generation of pyrolyzates and enhancement of pyrolytic rate. Generally, the fractional pretreatment was favorable to the acceleration of reaction rates and directional product distribution. Our findings can provide a feasible strategy for efficient disposal of DS towards cleaner production and energy recovery, and laid a puissant foundation for the future large-scale downstream processing of DR and perfection of biomass refinery system towards waste recycling and contaminant control.

Journal of Cleaner Production published new progress about Activation energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Quality Control of 121-00-6.

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

Guan, Qingqing published the artcileBiodiesel from transesterification at low temperature by AlCl3 catalysis in ethanol and carbon dioxide as cosolvent: Process, mechanism and application, Quality Control of 16332-06-2, the main research area is biodiesel aluminum chloride ethanol carbon dioxide temperature catalysis; ethanol carbon dioxide temperature catalysis transesterification mechanism.

Finding a more efficient method for the transesterification of triglycerides to biodiesel fuel (BD) is important in today’s world. In this study, transesterification of trilaurin was carried out in a solution containing 4 wt% of the Lewis acid AlCl3 dissolved in a cosolvent of ethanol and 5 MPa CO2. A conversion rate of over 90% was achieved within 1 h at the low temperature of 180°C. The process indicates a co-catalytic effect of the Lewis acid and CO2. We postulate several key steps for the mechanism. First, the CO2-ethanol mixture enhances the hydrogen bonding, increasing the concentration of C2H5O·. Second AlCl3 attacks the oxygen of C-O-C to weaken the bonds to form carbonyl carbon OR1, which is then easily attacked by C2H5O· to give the transesterified product (C2H4COOR1). Third, AlCl3 is finally replaced by H to form glycerin (GL) and intermediates, such as unmethyl esterified compounds (uME). AlCl3 was used as a flocculant and catalyst for converting waste cooking oil (WCO) to BD. The process achieved 97% free fatty acid (FFA) conversion at 120 °C in 90 min, making it one of the most efficient systems available for WCO recovery. AlCl3 was also successfully applied to microalgae, signaling the potential for a process that combines harvesting, lipid extraction, and transesterification, leading to fully integrated, microalgae-based BD production

Applied Energy published new progress about Activation energy. 16332-06-2 belongs to class ethers-buliding-blocks, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, Quality Control of 16332-06-2.

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

Bhatt, Pinakin J. published the artcileEffect of Different Cations on Ion-Transport Behavior in Polymer Gel Electrolytes Intended for Application in Flexible Electrochemical Devices, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is tetraethylene glycol dimethyl ether polymer gel electrolyte electrochem device.

This paper reports the effect of different cations (Na, Mg and Li) while keeping perchlorate as the common anion on ion-dynamics behavior within polymer gel electrolytes containing tetraethylene glycol di-Me ether (TEGDME) solvent and poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) as the polymer host. FTIR investigations demonstrate significant changes in characteristic bands, while XRD observations indicate prominent structural variation in terms of merger/suppression of phases when NaClO4, Mg(ClO4)2 and LiClO4 salts are immobilized in the PVdF-HFP/TEGDME matrix. The highest room temperature ionic conductivity of 1.2 x 10-3 S cm-1 with high dielec. constant value has been obtained for the Li+ conducting electrolyte composition due to its superior electrochem. and ion-conduction behavior as compared to its Na+ and Mg2+ counterparts. In the low-frequency region, modulus curves reveal polarizing effects with long-range mobility/migration of Na/Mg/Li ions, while in the high-frequency region, a peak onset relating the translational ion dynamics and conductivity relaxation is observed The reported polymer gel electrolytes may be employed as electronic materials for developing next-generation flexible electrochem. devices.

Journal of Electronic Materials 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, Name: 2,5,8,11,14-Pentaoxapentadecane.

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

Lee, Dawoon published the artcileMulti-Foldable and Environmentally-Stable All-Solid-State Supercapacitor Based on Hierarchical Nano-Canyon Structured Ionic-Gel Polymer Electrolyte, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is ionic gel polymer electrolyte solid state supercapacitor.

New ionic-gel polymer electrolytes (IGPEs) are designed for use as electrolytes for all-solid-state supercapacitors (ASSSs) with excellent deformability and stability. The combination of the photochem. reaction-based polymer matrix, weak-binding lithium salt with ionic liquid, and ion dissociating solvator is employed to construct the nano-canyon structured IGPE with high ionic conductivity (σDC = 1.2 mS cm-1 at 25°C), high dielec. constant (εs = 131), and even high mech. robustness (bending deformation for 10 000 cycles with superior conductivity retention [≈91%]). This gives rise to ASSS with high compatibility and stability, which is compliant with foldable electronics. Consequently, this ASSS delivers remarkable electrochem. performance (specific capacitance of ≈105 F g-1 at 0.22 A g-1, maximum energy d. and power d. of 23 and 17.2 kW kg-1), long lifetime (≈93% retention after 30 days), wider operating temperature (≈0-120°C), and mech. stabilities with no significant capacitance reduction after mech. bending and multiple folding, confirming the superior electrochem. durability under serious deformation states. Therefore, this ultra-flexible and environmentally stable ASSS based on the IGPE having the nano-canyon morphol. can be a novel approach for powering up the ultra-deformable and durable next-generation wearable energy storage devices.

Advanced Functional Materials 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, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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

Cheng, Eric Jianfeng published the artcileEffects of porosity and ionic liquid impregnation on ionic conductivity of garnet-based flexible sheet electrolytes, Computed Properties of 143-24-8, the main research area is porosity ionic liquid impregnation conductivity garnet flexible sheet electrolyte; aluminum doped lithium lanthanum zirconium oxide battery solid electrolyte.

Although the garnet-type ceramic ionic conductor, Li7La3Zr2O12 (LLZO), shows relatively high chem. stability against Li metal and has the potential to replace flammable liquid electrolytes for Li metal batteries, the large interfacial resistance between LLZO and electrodes challenges its practical application. A possible solution is to produce a quasi-solid-state LLZO-based flexible sheet electrolyte. Here we prepared an Al-doped LLZO-based flexible sheet electrolyte and studied its ionic conductivity as functions of porosity and ionic liquid (IL) impregnation. Possible Li+ ion conducting pathways through the quasi-solid-state composite sheet electrolyte were discussed and its electrochem. performance was also evaluated.

Journal of Power Sources 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, Computed Properties of 143-24-8.

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

Zou, Changfei published the artcileIn Situ Formed Protective Layer: Toward a More Stable Interface between the Lithium Metal Anode and Li6PS5Cl Solid Electrolyte, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium metal battery anode solid electrolyte interface ionic liquid.

Due to the advantages of high safety and high energy d., solid-state lithium batteries (SSLBs) are promising competitors for next-generation batteries. Unfortunately, the growth of Li dendrites and irreversible capacity loss caused by the Li metal anode/solid electrolyte interfacial incompatibility remain challenges. Herein, an in situ formed artificial protective layer between the lithium metal anode and solid electrolyte Li6PS5Cl (LPSC) is introduced. A stable solid electrolyte interface (SEI) is in situ formed in the Li/Li6PS5Cl interface via the electrochem. reduction of the liquid electrolyte LiTFSI/tetraethylene glycol di-Me ether (Li(G4)TFSI), which is beneficial for the improvement of the stability of interfacial chem. and homogeneous lithium deposition behavior. The assembled Li/Li(G4)TFSI-assisted Li6PS5Cl/Li sym. cells enable stable cycles for 850 and 400 h at a c.d. of 0.1 and 0.2 mA/cm2, resp. Moreover, the LiNi0.6Co0.1Mn0.3O2(NCM613)/Li(G4)TFSI-assisted Li6PS5Cl/Li SSLBs can achieve prominent cycling stability at room temperature This work provides a new insight into the interfacial modification to design SSLBs with high energy d.

ACS Applied Energy Materials 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, Name: 2,5,8,11,14-Pentaoxapentadecane.

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

Yang, Lanlan published the artcileHybrid MgCl2/AlCl3/Mg(TFSI)2 Electrolytes in DME Enabling High-Rate Rechargeable Mg Batteries, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is magnesium battery cathode electrolyte aluminum chloride magnesium TFSI; DME electrolyte; conductivity; rechargeable magnesium batteries; volumetric energy.

Rechargeable magnesium batteries (RMBs) are considered as one of the most promising next-generation secondary batteries due to their low cost, safety, dendrite-free nature, as well as high volumetric energy d. However, the lack of suitable cathode material and electrolyte is the greatest challenge facing practical RMBs. Herein, a hybrid electrolyte MgCl2/AlCl3/Mg(TFSI)2 (MACT) in di-Me ether (DME) is developed and exhibits excellent electrochem. performance. The high ionic conductivity (6.82 mS cm-1) and unique solvation structure of [Mg2(μ-Cl)2(DME)4]2+ promote the fast Mg kinetics and favorable thermodn. in hybrid Mg salts and DME electrolyte, accelerating mass transport and the charge transfer process. Therefore, the great rate capability can be realized both in sym. Mg/Mg cell and in CuS/Mg full cell.

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, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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