0-100 Archives - Esters-buliding-blocks

Xu, Yaobin’s team published research in ACS Nano in 2020 | CAS: 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 In Synthesis of Vinylene carbonate

ãCurrent Density Regulated Atomic to Nanoscale Process on Li Deposition and Solid Electrolyte Interphase Revealed by Cryogenic Transmission Electron Microscopyã?was written by Xu, Yaobin; Wu, Haiping; Jia, Hao; Zhang, Ji-Guang; Xu, Wu; Wang, Chongmin. Application In Synthesis of Vinylene carbonate And the article was included in ACS Nano in 2020. The article conveys some information:

C.d. has been perceived to play a critical rule in controlling Li deposition morphol. and solid electrolyte interphase (SEI). However, the at. level mechanism of the effect of c.d. on Li deposition and the SEI remains unclear. Here based on cryogenic transmission electron microscopy (TEM) imaging combined with energy dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS) electronic structure analyses, we reveal the at. level correlation of Li deposition morphol. and SEI with c.d. We discover that increasing c.d. leads to increased overpotential for Li nucleation and growth, leading to the transition from growth-limited to nucleation-limited mode for Li dendrites. Independent of c.d., the electrochem. deposited Li metal (EDLi) exhibits crystalline whisker-like morphol. The SEI formed at low c.d. (0.1 mA cm-2) is monolithic amorphous; while, a c.d. of above 2 mA cm-2 leads to a mosaic structured SEI, featuring an amorphous matrix with Li2O and LiF dispersoids, and the thickness of the SEI increases with the increase of c.d. Specifically, the Li2O particles are spatially located at the top surface of the SEI, while LiF is spatially adjacent to the Li-SEI interface. These results offer possible ways of regulating crucial microstructural and chem. features of EDLi and SEI through altering deposit conditions and consequently direct correlation with battery performance. The experimental process involved the reaction of Vinylene carbonate(cas: 872-36-6Application In Synthesis of Vinylene carbonate)

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

Feng, Yaohua’s team published research in Ionics in 2019 | CAS: 872-36-6

The author of ãEffects of LiBF4 concentration in carbonate-based electrolyte on the stability of high-voltage LiNi0.5Mn1.5O4 cathodeã?were Feng, Yaohua; Xu, Hui; Zhang, Yu; Li, Chunlei; Zhao, Dongni; Zhao, Qiuping; Mao, Liping; Zhang, Haiming; Li, Shiyou. And the article was published in Ionics in 2019. Recommanded Product: 872-36-6 The author mentioned the following in the article:

LiBF4 has attracted much attention due to its better thermal stability, lower sensitivity to environmental humidity, and lower charge transfer resistance provided by its solution, especially at high voltage. Herein, the effects of the concentration of LiBF4 salt on the stability and electrochem. properties of LiNi0.5Mn1.5O4 (LNMO) cathode material have been investigated by using the mixed solvents of LiBF4 salt, vinyl carbonate (EC), and di-Et carbonate (DEC) as electrolytes. The surface morphol. and structure of cycled LNMO electrode are studied by SEM (SEM), Raman spectroscopy, and Fourier transform IR spectroscopy (FTIR). The results show that the optimum concentration of LiBF4 salt is 1.4 M LiBF4-EC/DEC (1:5, by volume). Under optimum conditions, the LNMO cathode material has high electrochem. capacity and favorable rate performance. Meanwhile, the prepared electrolyte can easily form a thin and stable SEI film on the surface of LNMO electrode, which can effectively inhibit the continuous decomposition of the electrolyte. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Recommanded Product: 872-36-6)

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

Zhao, Liang’s team published research in Small in 2021 | CAS: 872-36-6

Electric Literature of C3H2O3In 2021 ,ãConstructing a Reinforced and Gradient Solid Electrolyte Interphase on Si Nanoparticles by In-Situ Thiol-Ene Click Reaction for Long Cycling Lithium-Ion Batteriesã?was published in Small. The article was written by Zhao, Liang; Zhang, Danfeng; Huang, Yongfeng; Lin, Kui; Chen, Likun; Lv, Wei; He, Yan-Bing; Kang, Feiyu. The article contains the following contents:

Constructing a stable solid electrolyte interphase (SEI) on high-specific-capacity silicon (Si) anode is one of the most effective methods to reduce the crack of SEI and improve the cycling performance of Si anode. Herein, the authors construct a reinforced and gradient SEI on Si nanoparticles by an in-situ thiol-ene click reaction. Mercaptopropyl trimethoxysilane (MPTMS) with thiol functional groups (SH) is first grafted on the Si nanoparticles through condensation reaction, which then in-situ covalently bonds with vinylene carbonate (VC) to form a reinforced and uniform SEI on Si nanoparticles. The modified SEI with sufficient elastic LixSiOy can homogenize the stress and strain during the lithiation of Si nanoparticles to reduce their expansion and prevent the SEI from cracking. The Si nanoparticles-graphite blending anode with the reinforced SEI exhibits excellent performance with an initial coulombic efficiency of â?0%, a capacity of 1053.3 mA h g-1 after 500 cycles and a high capacity of 852.8 mA h g-1 even at a high c.d. of 3 A g-1. Moreover, the obtained anode shows superior cycling stability under both high loadings and lean electrolyte. The in-situ thiol-ene click reaction is a practical method to construct reinforced SEI on Si nanoparticles for next-generation high-energy-d. lithium-ion batteries. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6Electric Literature of C3H2O3) was used in this study.

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

Dong, Jun’s team published research in RSC Advances in 2019 | CAS: 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.Computed Properties of C5H6O2

Computed Properties of C5H6O2In 2019 ,ãRegiospecific synthesis of polysubstituted furans with mono- to tricarboxylates from various sulfonium acylmethylides and acetylenic estersã?appeared in RSC Advances. The author of the article were Dong, Jun; Du, Hongguang; Xu, Jiaxi. The article conveys some information:

Polysubstituted furans I [R1 = CO2Me, CO2Et; R2 = H, CF3, CO2Me, CO2Et; R3 = H, CO2Me, CO2Et; R4 = Me, Ph, 1-naphthyl, etc.] were prepared in moderate to good yields from sulfur ylides and acetylenic esters. The direct reactions of dimethylsulfonium acylmethylides with acetylenic esters afforded furans I through a tandem sequence of Michael addition, intramol. nucleophilic addition, 4π ring opening, intramol. Michael addition and elimination. The method was extended to synthesize furan-3-carboxylate, -2,4-dicarboxylates, and -2,3,4-tricarboxylates as well. The current method provided a direct and simple strategy in synthesis of structurally diverse polysubstituted furans with mono- to tricarboxylate groups from safe and readily available dimethylsulfonium acylmethylides and different acetylenic esters. In the experiment, the researchers used Ethyl propiolate(cas: 623-47-2Computed Properties of C5H6O2)

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

Luo, Xiai’s team published research in RSC Advances in 2021 | CAS: 623-47-2

Luo, Xiai; Zhao, Yu; Tao, Susu; Yang, Zhong-Tao; Luo, Hui; Yang, Weiguang published their research in RSC Advances in 2021. The article was titled ãA simple and efficient copper-catalyzed three-component reaction to synthesize (Z)-1,2-dihydro-2-iminoquinolinesã?Electric Literature of C5H6O2 The article contains the following contents:

A operationally simple synthesis of (Z)-1,2-dihydro-2-iminoquinolines I (R = H, F, Cl, OMe; R1 = H, Br, Me, OMe; R2 = Me, Ph, 4-bromophenyl; R3 = n-pentyl, Ph, OEt, i-Pr, OMe, Ot-Bu; R4 = Me, n-Bu, 4-chlorophenyl, etc.) that proceeds under mild conditions is achieved by copper-catalyzed reaction of 1-(2-aminophenyl)ethan-1-ones II, sulfonyl azides R4SO2N3 and terminal ynones R3C(O)CC. In particular, the reaction goes through a base-free CuAAC/ring-opening process to obtain the Z-configured products due to hydrogen bonding. In the experiment, the researchers used many compounds, for example, Ethyl propiolate(cas: 623-47-2Electric Literature of C5H6O2)

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

He, Jian’s team published research in Small Methods in 2021 | CAS: 872-36-6

He, Jian; Wang, Huaping; Zhou, Qing; Qi, Shihan; Wu, Mingguang; Li, Fang; Hu, Wei; Ma, Jianmin published their research in Small Methods in 2021. The article was titled ãUnveiling the Role of Li+ Solvation Structures with Commercial Carbonates in the Formation of Solid Electrolyte Interphase for Lithium Metal Batteriesã?Related Products of 872-36-6 The article contains the following contents:

Solid electrolyte interphase (SEI), determined by the components of electrolytes, can endow batteries with the ability to repress the growth of Li dendrites. Nevertheless, the mechanism of com. carbonates on in situ-generated SEI and the consequential effect on cycling performance is not well understood yet, although some carbonates are well used in electrolytes. In this work, quantum chem. calculations and mol. dynamics are used to reveal the formation mechanisms of SEI with carbonate-based electrolyte additives on the at. level. It is confirmed that the Li-coordinated carbonate species are the leading participant of SEI formation and their impact on battery performance is clarified. Fluoroethylene carbonate (FEC) exhibits a completely different behavior from vinyl ethylene carbonate (VEC), ethylene carbonate (EC), and vinylene carbonate (VC). High reduction potential Li+-coordinated additives, e.g. FEC and VEC can dominate the formation of SEI by excluding propylene carbonate (PC) and LiPF6 from the decomposition, and the corresponding Li||Li sym. cells show enhanced long-term performance compared with those with pure PC electrolyte, while the low reduction priority additives (e.g., EC and VC) cannot form a uniform SEI by winning the competitive reaction. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6Related Products of 872-36-6) was used in this study.

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

Yao, Ming’s team published research in RSC Advances in 2020 | CAS: 623-47-2

ãEfficient synthesis of 1-iodoalkynes via Al2O3 mediated reaction of terminal alkynes and N-iodosuccinimideã?was written by Yao, Ming; Zhang, Jingjing; Yang, Sen; Xiong, Hangxing; Li, Li; Liu, E.; Shi, Hong. HPLC of Formula: 623-47-2 And the article was included in RSC Advances in 2020. The article conveys some information:

Iodination of terminal alkynes using N-iodosuccinimide (NIS) in the presence of γ-Al2O3 was developed to afford 1-iodoalkynes RC≡CI [R = CH2CH2OH, Ph, 2-pyridyl, etc.] with good to excellent yields (up to 99%). This described approach featured excellent chemoselectivity, good functional group tolerance and utilization of an inexpensive catalyst. The experimental process involved the reaction of Ethyl propiolate(cas: 623-47-2HPLC of Formula: 623-47-2)

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

Xu, Yaobin’s team published research in Nano Energy in 2020 | CAS: 872-36-6

ãSweeping potential regulated structural and chemical evolution of solid-electrolyte interphase on Cu and Li as revealed by cryo-TEMã?was published in Nano Energy in 2020. These research results belong to Xu, Yaobin; Wu, Haiping; Jia, Hao; Engelhard, Mark H.; Zhang, Ji-Guang; Xu, Wu; Wang, Chongmin. Product Details of 872-36-6 The article mentions the following:

A fundamental understanding of solid-electrolyte interphase (SEI) is paramount importance for controlling the cycling performance of rechargeable lithium metal batteries. The structural and chem. evolution of SEI with respect to electrochem. operating condition remains barely established. Here we develop a unique method for imaging the evolution of SEI formed on the Cu foil under sweeping electrochem. potential. By using cryogenic TEM imaging combined with energy dispersive X-ray spectroscopy and XPS electronic structure analyses, we reveal that, for the vinylene carbonate (VC)-free electrolyte, the SEI formed at 1.0 V is a monolithic amorphous structure, which evolves to amorphous matrix embedded with Li2O particles as the voltage decreases to 0 V. In the case of VC-containing electrolyte, the SEI is featured by an amorphous matrix with Li2O particles from 1.0 V to 0 V. The thickness of SEI formed on Cu foil increases with decreasing voltage. Associated with the localized charge modulation by the surface topog. feature and defects in the Cu foil, the SEI layer shows direct spatial correlation with these structural defects in the Cu. In addition, upon Li deposition, the SEI formed on the Li metal has similar thickness with, but different composition from the SEI formed on the Cu foil at 0 V. Those results provide insight toward SEI engineering for enhanced cycling stability of Li metal. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Product Details of 872-36-6)

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

Cao, Xia’s team published research in Nature Energy in 2019 | CAS: 872-36-6

The author of ãMonolithic solid-electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverizationã?were Cao, Xia; Ren, Xiaodi; Zou, Lianfeng; Engelhard, Mark H.; Huang, William; Wang, Hansen; Matthews, Bethany E.; Lee, Hongkyung; Niu, Chaojiang; Arey, Bruce W.; Cui, Yi; Wang, Chongmin; Xiao, Jie; Liu, Jun; Xu, Wu; Zhang, Ji-Guang. And the article was published in Nature Energy in 2019. Electric Literature of C3H2O3 The author mentioned the following in the article:

Lithium (Li) pulverization and associated large volume expansion during cycling is one of the most critical barriers for the safe operation of Li-metal batteries. Here, we report an approach to minimize the Li pulverization using an electrolyte based on a fluorinated orthoformate solvent. The solid-electrolyte interphase (SEI) formed in this electrolyte clearly exhibits a monolithic feature, which is in sharp contrast with the widely reported mosaic- or multilayer-type SEIs that are not homogeneous and could lead to uneven Li stripping/plating and fast Li and electrolyte depletion over cycling. The highly homogeneous and amorphous SEI not only prevents dendritic Li formation, but also minimizes Li loss and volumetric expansion. Furthermore, this new electrolyte strongly suppresses the phase transformation of the LiNi0.8Co0.1Mn0.1O2 cathode (from layered structure to rock salt) and stabilizes its structure. Tests of high-voltage Li||NMC811 cells show long-term cycling stability and high rate capability, as well as reduced safety concerns. In the experimental materials used by the author, we found Vinylene carbonate(cas: 872-36-6Electric Literature of C3H2O3)

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

Xiao, Jie’s team published research in Nature Energy in 2020 | CAS: 872-36-6

《Understanding and applying coulombic efficiency in lithium metal batteries》 was written by Xiao, Jie; Li, Qiuyan; Bi, Yujing; Cai, Mei; Dunn, Bruce; Glossmann, Tobias; Liu, Jun; Osaka, Tetsuya; Sugiura, Ryuta; Wu, Bingbin; Yang, Jihui; Zhang, Ji-Guang; Whittingham, M. Stanley. Formula: C3H2O3This research focused onzinc magnesium sodium batteries lithium metal battery coulombic efficiency. The article conveys some information:

Coulombic efficiency (CE) has been widely used in battery research as a quantifiable indicator for the reversibility of batteries. While CE helps to predict the lifespan of a lithium-ion battery, the prediction is not necessarily accurate in a rechargeable lithium metal battery. Here, we discuss the fundamental definition of CE and unravel its true meaning in lithium-ion batteries and a few representative configurations of lithium metal batteries. Through examining the similarities and differences of CE in lithium-ion batteries and lithium metal batteries, we establish a CE measuring protocol with the aim of developing high-energy long-lasting practical lithium metal batteries. The understanding of CE and the CE protocol are broadly applicable in other rechargeable metal batteries including Zn, Mg and Na batteries. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6Formula: C3H2O3) was used in this study.

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