Electrochemical properties of Sodium bis[salicylato(2-)]-borate - γ-butyrolactone Electrolytes in Sodium Battery

Diamant, Viktor; Malovanyy, Sergiy; Pershina, Katherine; Kazdobin, K. A.

doi:10.1016/j.matpr.2018.10.079

Cited by 8 publications

(9 citation statements)

References 20 publications

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“…Despite the good properties of GBL, only one recent work was found in literature regarding sodium-ion batteries; in this work the GBL-based electrolyte was shown to suffer from severe degradation when cycled above 3.9 V vs. Na + /Na, when using the novel salt sodium bis(salicylato) Batteries & Supercaps borate. [38] The cyclic voltammetry of GBL in this work similarly indicated lacking oxidative stability, where an oxidation occurred at 3 V vs. Na + /Na with no signs of passivation. Yet this was not fully reflected in our cell cycling results (see Figure 9).…”

Section: γ-Butyrolactone (Gbl)supporting

confidence: 54%

An Attempt to Formulate Non‐Carbonate Electrolytes for Sodium‐Ion Batteries

Mogensen

Colbin

Younesi

2021

Batteries & Supercaps

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Non‐aqueous carbonate solvents have been the main choice for the development of lithium‐ion batteries, and similarly most research on sodium‐ion batteries have been performed using carbonate‐based solvents. However, the differences between sodium and lithium batteries – in term chemistry/electrochemistry properties as well as electrode materials used – open up opportunities to have a new look at solvents that have attracted little attention as electrolyte solvent. This work investigates properties of a wide range of different solvent classes in the context of sodium‐ion battery electrolytes and compares them to the performance of propylene carbonate. The thirteen solvents studied here include one or several members of glymes, carbonates, lactones, esters, pyrrolidones, sulfones, and alkyl phosphates. Out of those, five outperforming solvents of γ‐butyrolactone (GBL), γ‐valerolactone (GVL), N‐methyl‐2‐pyrrolidone (NMP), propylene carbonate (PC), and trimethyl phosphate (TMP) were further investigated using additives of ethylene sulfite (ES), vinylene carbonate (VC), fluoroethylene carbonate (FEC), prop‐1‐ene‐1,3‐sultone (PES), sulfolane (TMS), tris(trimethylsilyl) phosphite (TTSPI), and sodium bis(oxalato)borate (NaBOB). The solvents TMS and tetraethylene glycol dimethyl ether (TEGDME) were tested in 1 : 1 mixtures by volume with the co‐solvents; NMP, dimethoxyethane (DME), and TMP. All electrolytes used NaPF6 as the salt. Primary evaluation relied on electrochemical cycling of full‐cell sodium‐ion batteries consisting of Prussian white cathodes and hard‐carbon anodes. Galvanostatic cycling was performed using both two‐ and three‐electrode cells, in addition, cyclic and linear sweep voltammetry was used to further evaluate the electrolyte formulations. Moreover, the resistance was measured on the anode and cathode, using Intermittent current interruption (ICI) technique.

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Section: γ-Butyrolactone (Gbl)supporting

confidence: 54%

An Attempt to Formulate Non‐Carbonate Electrolytes for Sodium‐Ion Batteries

Mogensen

Colbin

Younesi

2021

Batteries & Supercaps

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“…Then, it allows the implementation of the relay charge transfer mechanism [17,18]. Also, the results prove the assumption [19] about the existence of a certain ratio between the fragments of supramolecular formations, that is, the effect of R-and S-enantiomers of bis-(salicylo)borate-anion with a labile coordination environment of boron on the formation of conductive properties of the electrolyte and the formation of an additional ion transport channel due to the implementation of the relay mechanism.…”

supporting

confidence: 54%

Specialties of the structure and conductivity of the non-aqueous electrolytes based on alkali metal bis (salicyl) borates and bis (oxalate) borates

et al. 2019

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The structure and coordination environment of non-aqueous electrolytes based on bis(salicyl)borates of lithium, sodium, potassium, tetramethylammonium (MeBSB) and bis(oxalato)borates from lithium to cesium (MeBOB) using NMR spectroscopy have been investigated. Bis(salicyl)borates (BSB) and bis(oxalate)borates (BOB) of alkali metals and organic cations are considered as promising electroconductive components of electrolytes of modern chemical sources of current (lithium, sodium ion batteries and super-capacitors). The salts were synthesized by the microwave radiation method. The 13C and 11B NMR spectra analysis determined the presence of symmetric structure in BOB anion and the presence of two optical conformations of the BSB anion with labile coordination environment of boron. The conformations of the BSB are the result of the ion contact pairs formation. In the case of tetramethylammonium cation the presence of conformations are depended on the reactive medium. The conformational lability of the coordination sphere of NaBSB dissolved in DMAA is connected with increasing of the integral intensity of carboxyl group singles relatively signals of carbon atoms in fragments of another functional affiliation when the time delay between radio frequencies varies within 2-15 seconds. The difference in the structure of these anions leads to a change in the thermal dependence of the electrical conductivity of BSB and the transport of ions in non-aqueous solvents. Maximum electrical conductivity of salt solutions in DMFA is achieved at close concentrations of 0.75 m for KBSB and 0.77-1 m for NaBSB. The solubility of BSB is better than the BOB. Based on the measurements of the conductivity and the data of electrochemical impedance spectroscopy (the angle of inclination of spectra in the Nyquist coordinates in the low frequency range, the phase angle shift at a frequency) it was proposed the existence of two ways of ions and charge transfer in the electrolytes: diffusion and relay transport. The possibility of formation of a labile salt complex with a solvent due to hydrogen bonds is established.

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“…The relatively narrow distribution of the activation energy causes a wide distribution of reaction speed constants (or time constants), because they connected by the exponential relationship. This relationship gives a more pronounced frequency dependence of capacitance [11]. This dependence with combination of Kirgoff's laws makes possible to use the principles of commutation [12][13][14] for calculation of the impedance spectra of batteries electrodes after changing surface geometry (mechanical destruction).…”

Section: Introductionmentioning

confidence: 96%

ASSESSMENT OF MECHANICAL DAMAGES IN THE PRIMARY Zn-MnO2 BATTERIES BY ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

Riabokin¹,

Boichuk

Pershina

2019

Ukr. Chem. Journ.

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By current study determined dependence between changing of the average capacitance of the destroyed electrodes of chemical current sources, surface geometry and chemical composition of electrodes surface. In case of the minimum destruction of the surface of the electrode, the maximum value of the average capacity is achieved with the ratio Zn: Mn = 2: 1. The minimum capacity was been at a maximum concentration of manganese on the surface (Zn: Mn = 1: 3) and the maximum degree of destruction. That is, the destruction of the surface of the electrodes leads to a change in the ratio of Zinc and Manganese and with strong surface destruction, the number of Manganese increases significantly. The using of the second frequency-dependent parameter (capacitance dispersion) as a lumped parameter was allowed the application of the principles of electric current commutation for register the layered change in the electric characteristics of the destroyed electrodes. Due to that mathematical technique was obtained a visual picture of the quantitative and qualitative changes on the destroyed surfaces. The general view of the received diagrams repeated the contours of the SEM microphoto images of the same surfaces. There is a presence of sites with the local concentrated deviations from the total distribution of the capacitance in the specific frequency range in case of deep damage in the diagrams. Thus, these diagrams (EIS images) give a clear picture of the electrodes surface of and can be used to evaluate the type of surface damage and the degree of destruction of the electrodes of chemical current sources.

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Electrochemical properties of Sodium bis[salicylato(2-)]-borate - γ-butyrolactone Electrolytes in Sodium Battery

Cited by 8 publications

References 20 publications

An Attempt to Formulate Non‐Carbonate Electrolytes for Sodium‐Ion Batteries

An Attempt to Formulate Non‐Carbonate Electrolytes for Sodium‐Ion Batteries

Specialties of the structure and conductivity of the non-aqueous electrolytes based on alkali metal bis (salicyl) borates and bis (oxalate) borates

ASSESSMENT OF MECHANICAL DAMAGES IN THE PRIMARY Zn-MnO2 BATTERIES BY ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

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