Tag: 0-100

Collins, Gearoid A.; McNamara, Karrina; Kilian, Seamus; Geaney, Hugh; Ryan, Kevin M. published an article in 2021. The article was titled 《Alloying Germanium Nanowire Anodes Dramatically Outperform Graphite Anodes in Full-Cell Chemistries over a Wide Temperature Range》, and you may find the article in ACS Applied Energy Materials.COA of Formula: C3H2O3 The information in the text is summarized as follows:

The electrochem. performance of Ge, an alloying anode in the form of directly grown nanowires (NWs), in Li-ion full cells (vs LiCoO2) was analyzed over a wide temperature range (-40 to 40°C). LiCoO2||Ge cells in a standard electrolyte exhibited specific capacities 30x and 50x those of LiCoO2||C cells at -20 and -40°C, resp. We further show that propylene carbonate addition further improved the low-temperature performance of LiCoO2||Ge cells, achieving a specific capacity of 1091 mA h g-1 after 400 cycles when charged/discharged at -20°C. At 40°C, an additive mixture of Et Me carbonate and lithium bis(oxalato)borate stabilized the capacity fade from 0.22 to 0.07% cycle-1. Similar electrolyte additives in LiCoO2||C cells did not allow for any gains in performance. Interestingly, the capacity retention of LiCoO2||Ge improved at low temperatures due to delayed amorphization of crystalline NWs, suppressing complete lithiation and high-order Li15Ge4 phase formation. The results show that alloying anodes in suitably configured electrolytes can deliver high performance at the extremes of temperature ranges where elec. vehicles operate, conditions that are currently not viable for com. batteries without energy-inefficient temperature regulation. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6COA of Formula: C3H2O3) was used in this study.

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.COA of Formula: C3H2O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Roles of Nonflammable Organic Liquid Electrolyte in Stabilizing the Interface of the LiNi0.8Co0.1Mn0.1O2 Cathode at 4.5 V and Improving the Battery Performance》 was written by Pham, Hieu Quang; Thi Tran, Yen Hai; Han, Jisoo; Song, Seung-Wan. Recommanded Product: Vinylene carbonate And the article was included in Journal of Physical Chemistry C in 2020. The article conveys some information:

Driven by a high demand for safe lithium-ion batteries (LIBs) with no risk of fire, we develop a nonflammable organic liquid electrolyte, which is composed of 1 M lithium hexafluorophosphate salt and propylene carbonate and fluorinated linear carbonates. Herein, we report the studies of the effects of the nonflammable electrolyte on the surface chem. and structure of the nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode under the expanded electrochem. voltage window to 4.5 V and their correlation to cycling performance. We provide for the first time the visual evidence for the roles and effectiveness of our nonflammable organic liquid electrolyte in stabilizing both surface and bulk structures, in promoting the formation of a stable surface protective film at the NCM811 cathode and reducing crack formation, metal-dissolution, and structural degradation despite under 4.5 V high-voltage condition and thus resulting in the increased capacity up to 230 mA h g-1 at 0.2 C and unprecedented cycling performance of the NCM811 cathode under high-voltage in not only Li‖NCM811 half-cell for lithium metal batteries but also graphite‖NCM811 full-cell with vinylene carbonate additive for LIBs. The data give an insight into the design principle of nonflammable and high energy-d. lithium rechargeable batteries employing a nonflammable electrolyte and stable cathode-electrolyte interface. In the part of experimental materials, we found many familiar compounds, such as Vinylene carbonate(cas: 872-36-6Recommanded Product: Vinylene carbonate)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Recommanded Product: Vinylene carbonate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application In Synthesis of Ethyl propiolateIn 2019 ,《Practical Approach for Clean Preparation of Z-β-Thiocyanate Alkenyl Esters》 was published in ACS Sustainable Chemistry & Engineering. The article was written by Wu, Chao; Hong, Lin; Shu, Hui; Zhou, Qun-Huai; Wang, Yi; Su, Neng; Jiang, Si; Cao, Zhong; He, Wei-Min. The article contains the following contents:

A practical and eco-friendly method for the clean preparation of a variety of Z-β-thiocyanate alkenyl esters via lactic acid-catalyzed multicomponent hydrothiocyanation reaction was established. In the subgram-scale synthesis, Z-β-thiocyanate alkenyl esters were exclusively generated, and the product could be easily isolated in high purity via extraction In the large-scale synthesis, the pure products could be simply collected through liquid-liquid separation The eco-friendly lactic acid played a dual function in the transformation, serving as recyclable biomass catalyst and recyclable reaction medium. In addition to this study using Ethyl propiolate, there are many other studies that have used Ethyl propiolate(cas: 623-47-2Application In Synthesis of Ethyl propiolate) was used in this study.

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Application In Synthesis of Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Guangxu; Wei, Xuezhe; Chen, Siqi; Zhu, Jiangong; Han, Guangshuai; Tang, Xuan; Hua, Weibo; Dai, Haifeng; Ye, Jiping published an article in 2021. The article was titled 《Comprehensive Investigation of a Slight Overcharge on Degradation and Thermal Runaway Behavior of Lithium-Ion Batteries》, and you may find the article in ACS Applied Materials & Interfaces.Application of 872-36-6 The information in the text is summarized as follows:

Overcharge is a hazardous abuse condition that has dominant influences on cell performance and safety. This work, for the first time, comprehensively investigates the impact of different overcharge degrees on degradation and thermal runaway behavior of lithium-ion batteries. The results indicate that single overcharge has little influence on cell capacity, while it severely degrades thermal stability. Degradation mechanisms are investigated by utilizing the incremental capacity-differential voltage and relaxation voltage analyses. During the slight overcharge process, the conductivity loss and the loss of lithium inventory always occur; the loss of active material starts happening only when the cell is overcharged to a certain degree. Lithium plating is the major cause for the loss of lithium inventory, and an interesting phenomenon that the arrival time of the dV/dt peak decreases linearly with the increase of the overcharge degree is found. The cells with different degrees of overcharge exhibit a similar behavior during adiabatic thermal runaway. Meanwhile, the relationship between sudden voltage drop and thermal runaway is further established. More importantly, the characteristic temperature of thermal runaway, especially the self-heating temperature (T1), decreases severely along with overcharging, which means that a slight overcharge severely decreases the cell thermal stability. Further, post-mortem anal. is conducted to investigate the degradation mechanisms. The mechanism of the side reactions caused by a slight overcharge on the degradation performance and thermal runaway characteristics is revealed. In the part of experimental materials, we found many familiar compounds, such as Vinylene carbonate(cas: 872-36-6Application of 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Application of 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ghosh, Sankha published an article in 2021. The article was titled 《First-principles study on h-BSi3 sheet as a promising high-performance anode for sodium-ion batteries》, and you may find the article in Physical Chemistry Chemical Physics.Application In Synthesis of Vinylene carbonate The information in the text is summarized as follows:

Seeking cheap, efficient and sustainable alternatives to lithium-ion batteries (LIBs), sodium-ion batteries (SIBs) has emerged as a realm of research, due to the abundance of Na in the earth′s crust. We have investigated the relative performance of novel intrinsically metallic h-BSi3 (BS) sheet as an anode for SIBs, compared to LIBs, through D. Functional Theory studies. Our calculations show that BS has higher chemisorption interactions with Na than Li atoms while drawing substantial electron densities from both, turning them into cations. BS is able to reach a high specific capacity of 1127.62 mA h g-1 for Na, while only as half of that for Li, at ambient temperatures ranging 300-600 K. The moderate sodiation (0.77 V) and lithiation (0.79 V) voltages facilitate BS to prevent the SEI layer formation, metal plating and harmful dendrite growth and to maintain good energy d. BS retains good electronic and ionic conductivities after hosting both Na and Li adatoms, while the former diffuses with about as half the barriers as those of the latter, supporting faster charge/discharge rate and greater preservation of storage capacities in high current densities when BS is used as an anode in SIBs. Na adsorptions cause relatively lower structural deformations to BS, and refrain from forming clusters, leading to good cyclic stability. The superior electrochem. performance of Na, thus, makes BS a potential anode material for SIBs. The experimental process involved the reaction of Vinylene carbonate(cas: 872-36-6Application In Synthesis of Vinylene carbonate)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Application In Synthesis of Vinylene carbonate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yao, Nan; Chen, Xiang; Shen, Xin; Zhang, Rui; Fu, Zhong-Heng; Ma, Xia-Xia; Zhang, Xue-Qiang; Li, Bo-Quan; Zhang, Qiang published their research in Angewandte Chemie, International Edition in 2021. The article was titled 《An Atomic Insight into the Chemical Origin and Variation of the Dielectric Constant in Liquid Electrolytes》.Recommanded Product: 872-36-6 The article contains the following contents:

The dielec. constant is a crucial physicochem. property of liquids in tuning solute-solvent interactions and solvation microstructures. Herein the dielec. constant variation of liquid electrolytes regarding to temperatures and electrolyte compositions is probed by mol. dynamics simulations. Dielec. constants of solvents reduce as temperatures increase due to accelerated mobility of mols. For solvent mixtures with different mixing ratios, their dielec. constants either follow a linear superposition rule or satisfy a polynomial function, depending on weak or strong intermol. interactions. Dielec. constants of electrolytes exhibit a volcano trend with increasing salt concentrations, which can be attributed to dielec. contributions from salts and formation of solvation structures. This work affords an at. insight into the dielec. constant variation and its chem. origin, which can deepen the fundamental understanding of solution chem. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Recommanded Product: 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Recommanded Product: 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 872-36-6In 2019 ,《Silicon/mesoporous carbon (Si/MC) Derived from phenolic resin for high energy anode materials for Li-ion batteries: role of HF etching and vinylene carbonate (VC) additive》 was published in Batteries (Basel, Switzerland). The article was written by Rezqita, Arlavinda; Vasilchina, Hristina; Hamid, Raad; Sauer, Markus; Foelske, Annette; Taeubert, Corina; Kronberger, Hermann. The article contains the following contents:

Silicon/mesoporous carbon (Si/MC) composites with optimum Si content, in which the volumetric energy d. would be maximized, while volume changes would be minimized, have been developed. The composites were prepared by dispersing Si nanoparticles in a phenolic resin as a carbon source, subsequent carbonization, and etching with hydrofluoric acid (HF). Special attention was paid to understanding the role of HF etching as post-treatment to provide addnl. void spaces in the composites. The etching process was shown to reduce the SiO2 native layer on the Si nanoparticles, resulting in increased porosity in comparison to the non-etched composite material. For cell optimization, vinylene carbonate (VC) was employed as an electrolyte additive to build a stable solid electrolyte interphase (SEI) layer on the electrode. The composition of the SEI layer on Si/MC electrodes, cycled with and without VC-containing electrolytes for several cycles, was then comprehensively investigated by using ex-situ XPS. The SEI layers on the electrodes working with VC-containing electrolyte were more stable than those in configurations without VC; this explains why our sample with VC exhibits lower irreversible capacity losses after several cycles. The optimized Si/MC composites exhibit a reversible capacity of ∼800 mAhg-1 with an average coulombic efficiency of ∼99% over 400 cycles at C/10. In the experiment, the researchers used Vinylene carbonate(cas: 872-36-6Application of 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Application of 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Quality Control of Ethyl propiolateIn 2021 ,《First-in-Class Inhibitors of the Ribosomal Oxygenase MINA53》 was published in Journal of Medicinal Chemistry. The article was written by Nowak, Radoslaw P.; Tumber, Anthony; Hendrix, Eline; Ansari, Mohammad Salik Zeya; Sabatino, Manuela; Antonini, Lorenzo; Andrijes, Regina; Salah, Eidarus; Mautone, Nicola; Pellegrini, Francesca Romana; Simelis, Klemensas; Kawamura, Akane; Johansson, Catrine; Passeri, Daniela; Pellicciari, Roberto; Ciogli, Alessia; Del Bufalo, Donatella; Ragno, Rino; Coleman, Mathew L.; Trisciuoglio, Daniela; Mai, Antonello; Oppermann, Udo; Schofield, Christopher J.; Rotili, Dante. The article contains the following contents:

MINA53 is a JmjC domain 2-oxoglutarate-dependent oxygenase that catalyzes ribosomal hydroxylation and is a target of the oncogenic transcription factor c-MYC. Despite its anticancer target potential, no small-mol. MINA53 inhibitors are reported. Using ribosomal substrate fragments, we developed mass spectrometry assays for MINA53 and the related oxygenase NO66. These assays enabled the identification of 2-(aryl)alkylthio-3,4-dihydro-4-oxoypyrimidine-5-carboxylic acids as potent MINA53 inhibitors, with selectivity over NO66 and other JmjC oxygenases. Crystallog. studies with the JmjC demethylase KDM5B revealed active site binding but without direct metal chelation; however, mol. modeling investigations indicated that the inhibitors bind to MINA53 by directly interacting with the iron cofactor. The MINA53 inhibitors manifest evidence for target engagement and selectivity for MINA53 over KDM4-6. The MINA53 inhibitors show antiproliferative activity with solid cancer lines and sensitize cancer cells to conventional chemotherapy, suggesting that further work investigating their potential in combination therapies is warranted. The results came from multiple reactions, including the reaction of Ethyl propiolate(cas: 623-47-2Quality Control of Ethyl propiolate)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Quality Control of Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 623-47-2In 2019 ,《Three-Component Approach to Pyridine-Stabilized Ketenimines for the Synthesis of Diverse Heterocycles》 appeared in Journal of Organic Chemistry. The author of the article were Massaro, Nicholas P.; Chatterji, Aayushi; Sharma, Indrajeet. The article conveys some information:

Ketenimines are versatile synthetic intermediates capable of performing novel transformations in organic synthesis. They are normally generated in situ due to their inherent instability and high level of reactivity. Herein, we report pyridine-stabilized ketenimine zwitterionic salts, which are prepared through click chem. from readily accessible alkynes and sulfonyl azides. To demonstrate their synonymous reactivity to ketenimines, these salts have been utilized in a cascade sequence to access highly functionalized quinolines including the core structures of an antiprotozoal agent and the potent topoisomerase inhibitor Tas-103. In the experiment, the researchers used Ethyl propiolate(cas: 623-47-2Application of 623-47-2)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Application of 623-47-2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2019,Angewandte Chemie, International Edition included an article by Wang, Zhe; Xue, Fei; Hayashi, Tamio. Safety of Vinylene carbonate. The article was titled 《Synthesis of Arylacetaldehydes by Iridium-Catalyzed Arylation of Vinylene Carbonate with Arylboronic Acids》. The information in the text is summarized as follows:

Arylacetaldehydes were prepared by arylation of vinylene carbonate with arylboronic acids in the presence of [Ir(cod)(OMe)]2, 1,3-bis[di(4-methoxyphenyl)phosphino]propane, and B2(OH)4 in aqueous 1,2-dichloroethane. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Safety of Vinylene carbonate)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Safety of Vinylene carbonate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics