A Comparative Study of Synthetic Graphite and Li Electrodes in Electrolyte Solutions Based on Ethylene Carbonate‐Dimethyl Carbonate Mixtures

1996 ◽  
Vol 143 (12) ◽  
pp. 3809-3820 ◽  
Author(s):  
D. Aurbach ◽  
B. Markovsky ◽  
A. Shechter ◽  
Y. Ein‐Eli ◽  
H. Cohen
Keyword(s):  
Comparative Study ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Electrolyte Solutions ◽  
Synthetic Graphite

Spectroscopic and Transport Properties of Lithium Salts in Ethylene Carbonate Based Mixed Solvents for Lithium Batteries

1998 ◽  
Vol 548 ◽  
Author(s):  
M. Nazri ◽  
G. A. Nazri ◽  
R. Aroca
Keyword(s):  
Lithium Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Mixed Solvents ◽  
Lithium Perchlorate ◽  
Electrolyte Solutions ◽  
Lithium Salts ◽  
Theoretical Studies ◽  
Temperature Dependence Of Conductivity ◽  
Experimental And Theoretical Studies

ABSTRACTElectrolyte solutions formed by the addition of lithium hexafluorophosphate (LiPF6) and lithium perchlorate (LiC104) to solvents obtained by mixing ethylene carbonate (EC) with propylene carbonate (PC) and dimethyl carbonate (DMC) were studied. The temperature dependence of conductivity, infrared and Raman spectra of the EC-DMC and PC-EC-DMC solvent electrolytes are discussed. The experimental and theoretical studies of characteristic vibrations of DMC are reported.

scholarly journals Electrokinetic and Impedimetric Dynamics of FeCo-Nanoparticles on Glassy Carbon Electrode

Nano Hybrids ◽  
2013 ◽  
Vol 3 ◽  
pp. 1-23 ◽  
Author(s):  
Chinwe O. Ikpo ◽  
Njagi Njomo ◽  
Kenneth I. Ozoemena ◽  
Tesfaye Waryo ◽  
Rasaq A. Olowu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Transfer Process ◽  
Dimethyl Carbonate ◽  
Electrochemical Impedance ◽  
Ethylene Carbonate ◽  
Carbon Electrode ◽  
Electron Transfer Process ◽  
Feco Nanoparticles

The electrochemical dynamics of a film of FeCo nanoparticles were studied on a glassy carbon electrode (GCE). The film was found to be electroactive in 1 M LiClO4 containing 1:1 v/v ethylene carbonate dimethyl carbonate electrolyte system. Cyclic voltammetric experiments revealed a diffusion-controlled electron transfer process on the GCE/FeCo electrode surface. Further interrogation on the electrochemical properties of the FeCo nanoelectrode in an oxygen saturated 1 M LiClO4 containing 1:1 v/v ethylene-carbonate-dimethyl carbonate revealed that the nanoelectrode showed good response towards the electro-catalytic reduction of molecular oxygen with a Tafel slope of about 120 mV which is close to the theoretical 118 mV for a single electron transfer process in the rate limiting step; and a transfer coefficient (α) of 0.49. The heterogeneous rate constant of electron transfer (ket), exchange current density (io) and time constant (τ) were calculated from data obtained from electrochemical impedance spectroscopy and found to have values of 2.3 x 10-5 cm s-1, 1.6 x 10-4 A cm-2 and 2.4 x 10-4 s rad-1, respectively.

The preparation and efficacy of SrO/CeO2 catalysts for the production of dimethyl carbonate by transesterification of ethylene carbonate

Fuel ◽  
2018 ◽  
Vol 220 ◽  
pp. 706-716 ◽  
Author(s):  
Praveen Kumar ◽  
Ramanpreet Kaur ◽  
Shilpi Verma ◽  
Vimal Chandra Srivastava ◽  
Indra Mani Mishra
Keyword(s):  
Dimethyl Carbonate ◽  
Ethylene Carbonate

scholarly journals A Computational Comparison of Ether and Ester Electrolyte Stability on a Ca Metal Anode

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Diana Liepinya ◽  
Manuel Smeu
Keyword(s):  
Ethylene Carbonate ◽  
Stable Solution ◽  
Electrolyte Solutions ◽  
Ab Initio Molecular Dynamics ◽  
Excess Charge ◽  
Decomposition Products ◽  
Metal Anode ◽  
Decomposition Reactions ◽  
Charge Analysis ◽  
Dynamics Simulations

Ca-ion batteries (CIBs) have the potential to provide inexpensive energy storage, but their realization is impeded by the lack of suitable electrolytes. Motivated by recent experimental progress, we perform ab initio molecular dynamics simulations to investigate early decomposition reactions at the anode-electrolyte interface. By examining different combinations of solvent—tetrahydrofuran (THF) or ethylene carbonate (EC)—and salt—Ca(BH4)2, Ca(BF4)2, Ca(BCl4)2, and Ca(ClO4)2—we identify a variety of behavioral trends between electrolyte solutions. Next, we perform a separate trajectory with pure THF and gradually increased negative charge; despite an addition of -32e, no THF decomposition is detected. Charge analysis reveals that in a reductive environment, THF distributes excess charge evenly across its hydrocarbon backbone, while EC concentrates charge on its ester oxygens and carbonyl carbon, resulting in decomposition. Graphs of charge vs. time for both solvents reveal that EC decomposition products can be reduced by up to five electrons, while those of THF are limited to a single electron. Ultimately, we find Ca(BH4)2 and THF to be the most stable solution investigated herein, corroborating experimental evidence of its suitability as a CIB electrolyte.

Ultrasonic Process Intensification During the Preparation of Dimethyl Carbonate Based on the Alcoholysis of Ethylene Carbonate and the Kinetics Behaviors of Dimethyl Carbonate

2021 ◽  
Author(s):  
Yueyue He ◽  
Huaigang Cheng ◽  
Zihe Pan ◽  
Fangqin Cheng
Keyword(s):  
Heterogeneous Catalysis ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Process Intensification ◽  
Ultrasonic Process

The use of ultrasonic process intensification in the preparation of dimethyl carbonate (DMC) by alcoholysis of ethylene carbonate can make up for several disadvantages of heterogeneous catalysis, such as low...

Computer simulation study of the solvation of lithium ions in ternary mixed carbonate electrolytes: free energetics, dynamics, and ion transport

2018 ◽  
Vol 20 (45) ◽  
pp. 28649-28657 ◽  
Author(s):  
Youngseon Shim
Keyword(s):  
Computer Simulation ◽  
Ion Transport ◽  
Simulation Study ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ions ◽  
Computer Simulation Study ◽  
Mixed Carbonate

A ternary mixed carbonate electrolyte composed of ethylmethyl carbonate, dimethyl carbonate, ethylene carbonate, and Li+PF6− salt.

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