scholarly journals Interfacial properties of the ionic liquid [bmim][triflate] over a wide range of temperatures

RSC Advances ◽  
2018 ◽  
Vol 8 (18) ◽  
pp. 10115-10123 ◽  
Author(s):  
José L. Rivera ◽  
Luis Molina-Rodríguez ◽  
Mariana Ramos-Estrada ◽  
Pedro Navarro-Santos ◽  
Enrique Lima
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Wide Temperature Range ◽  
Interfacial Properties ◽  
Liquid Density ◽  
Tension Zone ◽  
Temperature Range ◽  
Linear Behavior ◽  
Vacuum Interface ◽  
Wide Range

Picture of the ionic liquid [bmim][triflate] at the vapor/vacuum interface. The liquid density and surface tension show linear behavior in a wide temperature range. The outer interfacial space shows a zero-surface tension zone.

Enabling highly reversible sodium metal cycling across a wide temperature range with dual-salt electrolytes

2021 ◽  
Author(s):  
Akila C. Thenuwara ◽  
Pralav P. Shetty ◽  
Neha Kondekar ◽  
Chuanlong Wang ◽  
Weiyang Li ◽  
...  
Keyword(s):  
Wide Temperature Range ◽  
High Energy ◽  
Liquid Electrolyte ◽  
Metal Cycling ◽  
Temperature Range ◽  
Sodium Metal ◽  
Wide Range

A new dual-salt liquid electrolyte is developed that enables the reversible operation of high-energy sodium-metal-based batteries over a wide range of temperatures down to −50 °C.

scholarly journals Electrochemical performance of hard carbon negative electrodes for ionic liquid-based sodium ion batteries over a wide temperature range

2015 ◽  
Vol 176 ◽  
pp. 344-349 ◽  
Author(s):  
Changsheng Ding ◽  
Toshiyuki Nohira ◽  
Rika Hagiwara ◽  
Atsushi Fukunaga ◽  
Shoichiro Sakai ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Electrochemical Performance ◽  
Wide Temperature Range ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Hard Carbon ◽  
Temperature Range ◽  
Negative Electrodes

scholarly journals On the Temperature Dependence of Vaporization Enthalpy and its Correlation with Surface Tension.

2021 ◽  
Author(s):  
Amin Alibakhshi ◽  
Bernd Hartke
Keyword(s):  
Surface Tension ◽  
Critical Temperature ◽  
Melting Point ◽  
Temperature Dependence ◽  
Wide Temperature Range ◽  
Thermophysical Properties ◽  
Vaporization Enthalpy ◽  
Temperature Range

Temperature dependence of vaporization enthalpy is one of the most important thermophysical properties of compounds. In the present study, we theoretically developed relationships applicable to evaluation of vaporization enthalpy of compounds from diverse chemical families for a wide temperature range from melting point to the critical temperature. One outcome of the proposed approach is a relationship describing the correlation between the surface tension and vaporization enthalpy which outperforms the extensively applied Kabo method proposed for the same purpose.<br>

Prediction of Fracture Toughness Temperature Dependence Over a Wide Temperature Range Using Simplified and Direct Scaling Method

2018 ◽  
Author(s):  
Takashi Inoue ◽  
Toshiyuki Meshii
Keyword(s):  
Fracture Toughness ◽  
Temperature Dependence ◽  
Yield Stress ◽  
Wide Temperature Range ◽  
Fracture Load ◽  
Specimen Thickness ◽  
Temperature Range ◽  
Direct Scaling ◽  
Wide Range ◽  
Mc Method

The fracture toughness KJc of the material in the ductile to brittle transition temperature (DBTT) range exhibits both test specimen thickness (TST) dependence and temperature dependence. Attention has been paid to the master curve (MC) method, which provides an engineering approach to address these two issues. Although MC is intended to be applied to arbitrary ferritic material whose yield stress is within the range of 275 to 825 MPa, the KJc value must be obtained to determine the material dependent reference temperature T0. The applicable range of MC method is restricted to T0 ± 50 °C. Previous studies indicate that additional pre-tests to obtain T0 are necessary; thus, there might be some unwritten requirement to the test temperature for the KJc temperature dependence prediction in MC method to work effectively. If testing must be conducted for the material of interest at some restricted temperature, a more flexible KJc temperature dependence prediction can possibly be obtained for a wide temperature range in the DBTT range, if the simplified and direct scaling (SDS) method, which predicts fracture “load” from yield stress temperature dependence proposed previously is applied. In this study, the SDS method was applied to two different steels: Cr-Mo steel JIS SCM440 and 0.55% carbon steel JIS S55C. Both tensile and fracture toughness tests were performed over a wide range of temperatures, specifically, −166 to 100 °C for SCM440 and −166 to 20 °C for S55C. The SDS method (i.e., fracture load is proportional to 1/(yield stress)) was initially validated for the specimens in the DBTT range. Finally, a simplified method was proposed and initially validated to predict the KJc temperature dependence, by applying the SDS using the EPRI plastic J functional form.

scholarly journals Surface induced smectic order in ionic liquids – an X-ray reflectivity study of [C22C1im]+[NTf2]−

2017 ◽  
Vol 19 (39) ◽  
pp. 26651-26661 ◽  
Author(s):  
Julian Mars ◽  
Binyang Hou ◽  
Henning Weiss ◽  
Hailong Li ◽  
Oleg Konovalov ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Wide Temperature Range ◽  
X Ray ◽  
Temperature Range

Surface induced smectic order has been observed in the ionic liquid [C22C1im]+[NTf2] over an extremely wide temperature range of 88 K.

scholarly journals Evaluation of the Temperature Dependence of Vaporization Enthalpy and its Correlation with Surface Tension by Machine Learning and Predictive Correlations

2021 ◽  
Author(s):  
Amin Alibakhshi ◽  
Bernd Hartke
Keyword(s):  
Machine Learning ◽  
Surface Tension ◽  
Critical Temperature ◽  
Melting Point ◽  
Temperature Dependence ◽  
Wide Temperature Range ◽  
Thermophysical Properties ◽  
Vaporization Enthalpy ◽  
Temperature Range

Temperature dependence of vaporization enthalpy is one of the most important thermophysical properties of compounds. In the present study, we theoretically developed relationships applicable to evaluation of vaporization enthalpy of compounds from diverse chemical families for a wide temperature range from melting point to the critical temperature. One outcome of the proposed approach is a relationship describing the correlation between the surface tension and vaporization enthalpy which outperforms the extensively applied Kabo method proposed for the same purpose.<br>

scholarly journals Hydrogen bonding and charge transport in a protic polymerized ionic liquid

Soft Matter ◽  
2020 ◽  
Vol 16 (26) ◽  
pp. 6091-6101 ◽  
Author(s):  
Arthur Markus Anton ◽  
Falk Frenzel ◽  
Jiayin Yuan ◽  
Martin Tress ◽  
Friedrich Kremer
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Fourier Transform ◽  
Charge Transport ◽  
Wide Temperature Range ◽  
Dielectric Spectroscopy ◽  
Fourier Transform Infrared ◽  
Polymerized Ionic Liquid ◽  
Temperature Range ◽  
Broadband Dielectric Spectroscopy

Hydrogen bonding and charge transport in the protic polymerized ionic liquid PAAPS are studied by combining Fourier transform infrared (FTIR) and broadband dielectric spectroscopy (BDS) in a wide temperature range from 170 to 300 K.

Electrical properties of thin-film resistors in a wide temperature range

Circuit World ◽  
2015 ◽  
Vol 41 (3) ◽  
pp. 116-120 ◽  
Author(s):  
Paweł Winiarski ◽  
Adam Kłossowicz ◽  
Jacek Wróblewski ◽  
Andrzej Dziedzic ◽  
Wojciech Stęplewski
Keyword(s):  
Thin Film ◽  
Electrical Properties ◽  
Low Temperature ◽  
Wide Temperature Range ◽  
Linear Temperature Dependence ◽  
Content Type ◽  
Temperature Range ◽  
Wide Range ◽  
Thin Film Resistors ◽  
Thermal Shocks

Purpose – The purpose of this paper is to characterize electrical properties of nickel-phosphorus (Ni-P) thin-film resistors made on FR-4 laminate in a wide range of temperature (from −180 to 20°C). Design/methodology/approach – The study was performed using resistors made of Ni-P foil with two different thicknesses (0.1 or 0.05 μm) and sheet resistances (100 or 250 Ω/sq), respectively. The resistance rectangular resistors had length and width from the range between 0.59 and 5.91 mm. The resistance versus temperature characteristics and their distribution as well as resistors ' durability to low-temperature thermal shocks were investigated. Findings – The results showed almost linear temperature dependence of resistance with a negative temperature coefficient of resistance of about −95 ppm/°C for 250 Ω/sq layer and −55 ppm/°C for 100 Ω/sq layer. A very small dimensional effect was observed for sheet resistance as well as for R(T) characteristic. Thin-film resistors are also characterized by very high durability to low-temperature thermal shocks. Originality/value – The results presented in this paper can be very useful for low-temperature applications of thin-film resistors made on printed circuit boards. They suggest possibility of wide applications of these components in a wide temperature range.

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