Thermal conductivity and thermal diffusivity of Pyrrolidinium-BasedIonic liquids at atmospheric pressure

Зарипов, З. И.; Гумеров, Ф. М.; Хайрутдинов, В. Ф.; Musiał, Małgorzata; Zorębski, Edward; Dzida, Marzena; Abdulagatov, Ilmutdin M.

doi:10.1016/j.fluid.2018.12.025

Cited by 22 publications

(13 citation statements)

References 23 publications

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“…Typically, the energy storage density of ILs is high and lies in the range of 1.5–2.3 MJ·m –3 ·K –1 . 51 , 52 Importantly, no effect of carbon nanomaterial additives on C p ρ was founded in this work because the specific isobaric heat capacity and the density of INFs changed in opposite directions, e.g., the INFs exhibited lower C p (−0.36%) and higher ρ (+0.39%) compared to pristine IL, or a negligible enhancement of C p (+1.4%) and ρ (+0.34%) ( Tables S5 and S6 in Supporting Information ) was observed. Thus, the energy storage density C p ρ was equal to 1.9 MJ·m –3 ·K –1 for both the IL and the INFs.…”

Section: Resultsmentioning

confidence: 99%

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Jóźwiak

Dzido

Zorębski

et al. 2020

ACS Appl. Mater. Interfaces

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Transfer of the excellent intrinsic properties of individual carbon nanoparticles into real-life applications of the corresponding heat transfer fluids remains challenging. This process requires identification and quantification of the nanoparticle–liquid interface. Here, for the first time, we have determined geometry and properties of this interface by applying transmission electron cryomicroscopy (cryo-TEM). We have systematically investigated how the particle morphology of carbon-based nanomaterials affected the thermal conductivity, specific isobaric heat capacity, thermal diffusivity, density, and viscosity of ionanofluids and/or bucky gels, using a wide range of fillers, especially single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs), both with extreme values of aspect ratio (length to diameter ratio) from 150 to 11 000. Accordingly, hybrid systems composed of various carbon nanomaterials and ionic liquid, namely 1-ethyl-3-methylimidazolium thiocyanate [EMIM][SCN], were prepared and characterized. Most of the analyzed nanodispersions exhibited long-term stability even without any surfactant. Our study revealed that the thermal conductivity could be remarkably improved to the maximum values of 43.9% and 67.8% for ionanofluid and bucky gel (at 1 wt % loadings of MWCNTs and SWCNTs), respectively, compared to the pristine ionic liquid. As a result, the model proposed by Murshed and co-workers has been improved for realistic description of the concentration-dependent thermal conductivity of such hybrid systems. The obtained results undoubtedly indicate the potential of ionanofluids and bucky gels for energy management.

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Section: Resultsmentioning

confidence: 99%

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Jóźwiak

Dzido

Zorębski

et al. 2020

ACS Appl. Mater. Interfaces

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“…Its structural formula is shown in Figure 1 and the properties are presented in Table 1 . It is an interesting hydrophobic type of ionic liquid due to its wide potential stability window and is currently available in decent purity from several suppliers [ 22 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Study of the Active Carbon from Used Coffee Grounds as the Active Material for a High-Temperature Stable Supercapacitor with Ionic-Liquid Electrolyte

et al. 2020

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This study reveals a simple approach to recycle wasted coffee grounds into highly valuable carbon material with superior electrochemical performance. Activated carbon prepared from wasted coffee grounds has been formed via hydrothermal acidic hydrolysis followed by a KOH chemical activation at 800 ∘C. To understand the electrochemical properties of the sample, a set of characterization tools has been utilized: N2 and CO2 adsorption–desorption isotherms, thermal gravimetric analysis, Fourier transform infrared spectroscopy, Raman spectroscopy and scanning electron microscopy. The specific surface area obtained from a Brunner–Emmett–Teller (BET) analysis reached 2906±19m2g−1. Prepared sample (designated as ACG-800KOH) was tested as electrode material in an electric double layer capacitor (EDLC) device with ionic liquid PYR13-TFSI as an electrolyte. The EDLC test was conducted at temperatures ranging from 20 to 120 ∘C. The specific material capacitance reached 178 Fg−1 measured at 20 ∘C and 50 A g−1 and was in the range 182 to 285 Fg−1 at the 20 to 120 ∘C temperature range.

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“…It is a key property in the design of heat and mass transfer equipment in the chemical industry, metallurgy, uid ow, etc. 78 Recently Zaripov et al 78 indicated the necessity of new and enhanced heat transfers uids in order to improve product quality, reduce operating costs and its environmental impact in industrial processes. ILs can be used as thermal uids due to their various physicochemical properties such as negligible vapor pressure, liquid state, density, viscosity, heat capacity and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic, structural and dynamic properties of ionic liquids [C₄mim][CF₃COO], [C₄mim][Br] in the condensed phase, using molecular simulations

et al. 2019

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Thermal conductivity and thermal diffusivity of Pyrrolidinium-BasedIonic liquids at atmospheric pressure

Cited by 22 publications

References 23 publications

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Study of the Active Carbon from Used Coffee Grounds as the Active Material for a High-Temperature Stable Supercapacitor with Ionic-Liquid Electrolyte

Thermodynamic, structural and dynamic properties of ionic liquids [C₄mim][CF₃COO], [C₄mim][Br] in the condensed phase, using molecular simulations

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Thermal conductivity and thermal diffusivity of Pyrrolidinium-BasedIonic liquids at atmospheric pressure

Cited by 22 publications

References 23 publications

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Remarkable Thermal Conductivity Enhancement in Carbon-Based Ionanofluids: Effect of Nanoparticle Morphology

Study of the Active Carbon from Used Coffee Grounds as the Active Material for a High-Temperature Stable Supercapacitor with Ionic-Liquid Electrolyte

Thermodynamic, structural and dynamic properties of ionic liquids [C4mim][CF3COO], [C4mim][Br] in the condensed phase, using molecular simulations

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Thermodynamic, structural and dynamic properties of ionic liquids [C₄mim][CF₃COO], [C₄mim][Br] in the condensed phase, using molecular simulations