Thermophysical properties of n-hexadecane: Combined molecular dynamics and experimental investigations

Klochko, L.; Noel, Justine; Sgreva, Nicolò; Leclerc, Sébastien; Métivier, C.; Lacroix, David; Isaiev, Mykola

doi:10.1016/j.icheatmasstransfer.2022.106234

Cited by 4 publications

(2 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the phase transition temperature range and shape of the transition peaks are extended. 41,42 Additionally, this suppressive effect also influences the enthalpy of n-octadecane in NE-PCMs. As seen in Figure 3b, NE-PCM50 displays a minimum melting enthalpy of 69.6 J g −1 , whereas NE-PCM90 exhibits a maximum melting enthalpy of 189.8 J g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…This suppressive effect of the shell layer on n -octadecane can be attributed to the notable interactions at the interfacial region between the n -octadecane molecules and the surrounding cross-linked polyurea chains, which influences the regular alignment of interfacial n -octadecane molecules during the phase transition process. As a result, the phase transition temperature range and shape of the transition peaks are extended. , …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Geng,

Wang,

Chen

et al. 2024

ACS Nano

View full text Add to dashboard Cite

The fast-charging performance of conventional lithium-ion batteries (LIBs) is determined by the working temperature. LIBs may fail to work under harsh conditions, especially in the low-temperature range of the local environment or in the high-temperature circumstances resulting from the release of substantial Joule heating in the short term. Constructing a thermal engineering framework for thermal regulation and maintaining the battery running at an appropriate temperature range are feasible strategies for developing temperature-tolerant, fast-charging LIBs. In this work, we prepare phase change nanocapsules as a thermal regulating layer on the cell surface. The polyurea shells of the nanocapsules are decorated with polyaniline, where the molecular vibration of polyaniline is enhanced under solar irradiation, enabling light-to-heat conversion that achieves an effective temperature increment at low temperatures. Based on the large latent heat storage capability of the n-octadecane core in the nanocapsules, the thermal regulating layer is sufficient to modulate strong heat release when operating LIBs at a high current rate, which efficiently prevents strong side reactions at high temperatures or even the occurrence of thermal runaway. This work highlights the promise of optimizing the operating temperature with a thermal regulator to ensure the safety and performance stability of fast-charging LIBs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Geng,

Wang,

Chen

et al. 2024

ACS Nano

View full text Add to dashboard Cite

show abstract

Experimental velocity and temperature measurements for natural convection in a highly porous medium

Sgreva,

Métivier,

Teixeira

et al. 2024

International Journal of Thermal Sciences

View full text Add to dashboard Cite

Effective thermal diffusivity and conductivity of a fluid-saturated solid foam

Sgreva

Jannot

Métivier

2023

Review of Scientific Instruments

View full text Add to dashboard Cite

The thermal properties of composite materials, such as fluid-saturated solid foams, can be estimated in two ways: using equivalent models based on both the thermal properties of the liquid and solid phases or by direct measurements, which, however, are not always straightforward. In this paper, we provide a new experimental device based on the four-layer (4L) method to measure the effective thermal diffusivity of a solid foam filled with different fluids (glycerol and water). The specific heat of the solid part is measured using differential scanning calorimetry, and the volumetric heat capacity of the composite system is estimated using an additive law. The effective thermal conductivity deduced from experiments is then compared with the maximum and minimum values obtained from the parallel and series equivalent models. The proposed 4L method is first validated by measuring the thermal diffusivity of pure water and then used afterward to measure the effective thermal diffusivity of the fluid-saturated foam. Experimental results converge with those obtained from equivalent models in the case where the different components of the system have similar thermal conductivities (e.g., glycerol-saturated foam). On the other hand, when the liquid and solid phases have very different thermal properties (e.g., water-saturated foam), the experimental results differ from what equivalent models predict. This highlights the need to make appropriate experimental measurements to estimate the overall thermal properties of these latter multicomponent systems or to consider more realistic equivalent models.

show abstract

Thermophysical properties of n-hexadecane: Combined molecular dynamics and experimental investigations

Cited by 4 publications

References 53 publications

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Experimental velocity and temperature measurements for natural convection in a highly porous medium

Effective thermal diffusivity and conductivity of a fluid-saturated solid foam

Contact Info

Product

Resources

About