Binary eutectics of acetamide with inorganic nitrates: thermophysical properties relevant for heat storage

Ristić, Gordana S.; Todorović, M.

doi:10.1016/0927-0248(92)90107-z

Cited by 15 publications

(8 citation statements)

References 6 publications

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“…These nitrate salts also form low-melting eutectics with organic compounds such as acetamide or butyramide, confirming that eutectics or low-melting mixtures with organic compounds, such as TEAN, are possible. [Nikolic 1992; This work supports the idea that nitrate salt mixtures would be able to absorb a significant amount of latent heat from various hydrolysis, and abiotic/biotic reactions of the organic compounds in the matrix. This would act as a temperature limiter on the system, much like water.…”

Section: Other Factors That Can Influence Reaction Chemistrysupporting

confidence: 80%

Waste Isolation Pilot Plant Technical Assessment Team Report

Wilson

Baker

Hart

et al. 2015

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Section: Other Factors That Can Influence Reaction Chemistrysupporting

confidence: 80%

Waste Isolation Pilot Plant Technical Assessment Team Report

Wilson

Baker

Hart

et al. 2015

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“…Thus, Li + was replaced with another one from the alkali metal group (Na, K) to determine which cation in DES ensures the highest specific capacitance of the capacitor. To do so, solutions of KNO 3 with AA (molar ratio 6.8 : 93.2) [33] and NaNO 3 with AA (molar ratio 15.4 : 84.6) [33] were prepared and subjected to capacitance and efficiency tests in electrochemical capacitors. The results are presented in Figure 6 (and Figure S11).…”

Section: Resultsmentioning

confidence: 99%

Deep Eutectic Solvents for High‐Temperature Electrochemical Capacitors

2021

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An invited contribution to the Marcin Opałło FestschriftThis article provides an overview of a deep eutectic mixture based on the application of lithium nitrate (V) and acetamide as an electrolyte in a carbon-based electrochemical capacitor. This type of electrolyte is intended to be applied in devices designed for operation under critical conditions (e. g., extreme temperatures). In contrast to water-and common organic-based formulations, the proposed electrolyte ensures good device performance at 100 °C. To describe the chemistry of the proposed mixture, infrared and Raman spectroscopy, differ-ential scanning calorimetry, and gas chromatography with mass spectrometry were used. Electrochemical analysis includes the verification of system ageing, self-discharge monitoring, leakage current measuring, and fundamental testing related to determining the specific capacitance or maximum voltage. Additionally, comprehensive analysis of the lithium nitrate salt and organic solvent addition to the operating system was carried out, including the replacement of lithium ions with sodium or potassium.

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“…Many attempts have therefore been made to accomplish high performance multivalent ion-conductive materials, including liquid, solid, and polymer electrolytes. 21 Indeed, many solid organic compounds with an acylamino group, such as urea, acetamide, and their derivatives, lower the melting point of mixtures and consequently lead to the formation of metalcontaining room temperature electrolytes. This basic feature restricts the possible salt and solvent combinations to solvents with high polarity and/or good solvating power, and highly dissociative salts based on chargedelocalized weak Lewis basic anions, regardless of the metal-ion battery concept chosen.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6][7][8][9][10] Only a few systems, however, have achieved any favorable ionic conductivities, much due to the very strong ion-ion interactions between the multivalent metal cations and their counter anions, which must be surpassed by ion-solvent interactions. 18,[21][22][23][24][25][26] Acylamino-based compounds interact with both cations and anions, that is why mixtures of the LiTFSA/LiTFSI salt, based on the weakly Lewis basic bis(triuoromethanesulfonyl)amide/imide TFSA/ TFSI anion, with urea, acetamide, or N-methylacetamide (NMA) result in room temperature molten electrolytes with high ionic conductivities. [11][12][13] Another path is using mutually miscible compounds to lower the resulting melting point, compared to the individual components, by an entropic effect, for appropriate ratios resulting in a homogeneous liquid at ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Al conductive haloaluminate-free non-aqueous room-temperature electrolytes

Mandai

Johansson

2015

J. Mater. Chem. A

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Al batteries are yet rather unexplored as a promising technology to respond to the growing electrochemical energy storage demands. Despite the outstanding electrochemical activity of haloaluminate-based electrolytes, no prospect of practical re-chargeable Al batteries has yet materialized, partly due to these electrolytes' extremely sensitive nature. Hence alternative aluminum conducting electrolytes with sufficient stability are strongly needed. Here a series of room-temperature ternary electrolytes consisting of aluminum trifluoromethanesulfonate (Al[TfO] 3 ), N-methylacetamide (NMA), and urea are presented, which provide excellent ionic conductivities by selecting appropriate ratios. Compared to conventional organic electrolytes, unprecedented solvation ability for Al-salts and remarkable ion transport properties were observed. For the optimized composition, Al[TfO] 3 /NMA/urea ¼ 0.05/0.76/0.19, physicochemical properties and vibrational spectroscopy data imply a decoupling of the Al conduction mechanism from viscosity limitations and furthermore that the dissociation state of the Al[TfO] 3 salt drastically changes.These phenomena are likely due to the unique coordination environment of the Al 3+ ions and the multiple functions of urea in these ternary mixtures. The electrochemical properties of the optimized ternary electrolyte were studied with respect to the electrochemical stability window and using cyclic voltammetry. † Electronic supplementary information (ESI) available: DSC traces of the ternary electrolytes with different compositions are provided in Fig. S1. FT-IR spectra in the range 1700-1500 cm À1 for the pure components (NMA, urea, and Al[TfO] 3 ) and for different ternary electrolytes are provided in Fig. S2. See

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Binary eutectics of acetamide with inorganic nitrates: thermophysical properties relevant for heat storage

Cited by 15 publications

References 6 publications

Waste Isolation Pilot Plant Technical Assessment Team Report

Waste Isolation Pilot Plant Technical Assessment Team Report

Deep Eutectic Solvents for High‐Temperature Electrochemical Capacitors

Al conductive haloaluminate-free non-aqueous room-temperature electrolytes

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