Thermophysical Properties of Lithium Alloys for Thermal Batteries

Swift, Geoffrey A.

doi:10.1007/s10765-011-1081-0

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…The LiSi anode has the highest conductivity and the highest temperature dependency of all the material measured here. Swift [17] found higher conductivities for the LiSi alloy that make up for the majority of our anode, but with a negative temperature dependency. This doesn't necessarily contradict our results because the anode contain a significant quantity of additive that changes its conductivity.…”

Section: Other Heterogeneous Materials Used In Thermal Batteriesmentioning

confidence: 75%

A new method for thermal conductivity measurement: application to complex heterogeneous materials used in thermal batteries

et al. 2022

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The thermal conductivity of heterogeneous materials used in thermal batteries is difficult to measure. These materials must be handled under controlled atmosphere with methods adapted to their porous nature. The method presented in this work uses heating plates to send a sinusoidal thermal signal to the tested sample. The whole setup is confined in a glovebox to ensure the composition and hygrometry of the atmosphere. Parametric computer simulations with varying thermal conductivity (λ) of the sample and thermal resistance (h) of the contacts as inputs were performed to calculate the phase shifts associated with two thicknesses of the sample. Experimental measurements of phase shifts on these two configurations allowed the identification of the only couple (λ, h) which matches the phase shifts on the respective thicknesses. This method is validated using the reference material BK7 at different temperatures. Thermal conductivities of different materials used in thermal batteries are also given using this method.

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Section: Other Heterogeneous Materials Used In Thermal Batteriesmentioning

confidence: 75%

A new method for thermal conductivity measurement: application to complex heterogeneous materials used in thermal batteries

et al. 2022

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“…At 300 K, they can range from less than 1Wm −1 K −1 (Zink et al, 2006) to around 4Wm −1 K −1 (Liu et al, 2009;Yang et al, 2010). While measurements exist for (poly)crystalline Li-Si alloys (Swift, 2011), we are not aware of any experimental data on the thermal conductivity of Li-intercalated amorphous silicon.…”

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confidence: 99%

Thermal transport of glasses via machine learning driven simulations

Pegolo,

Grasselli

2024

Front. Mater.

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Accessing the thermal transport properties of glasses is a major issue for the design of production strategies of glass industry, as well as for the plethora of applications and devices where glasses are employed. From the computational standpoint, the chemical and morphological complexity of glasses calls for atomistic simulations where the interatomic potentials are able to capture the variety of local environments, composition, and (dis)order that typically characterize glassy phases. Machine-learning potentials (MLPs) are emerging as a valid alternative to computationally expensive ab initio simulations, inevitably run on very small samples which cannot account for disorder at different scales, as well as to empirical force fields, fast but often reliable only in a narrow portion of the thermodynamic and composition phase diagrams. In this article, we make the point on the use of MLPs to compute the thermal conductivity of glasses, through a review of recent theoretical and computational tools and a series of numerical applications on vitreous silica and vitreous silicon, both pure and intercalated with lithium.

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“…10 Specific heat capacity is one of the important thermophysical properties for thermal design and analysis of battery. [11][12][13][14] The specific heat capacity indicates the bulk heat stored inside the battery. If the heat capacity is larger, the temperature rise will be lower, and better thermal control results can be obtained during the battery discharge.…”

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confidence: 99%

Experimental Study on Specific Heat Capacity of Lithium Thionyl Chloride Batteries by a Precise Measurement Method

Zhang

Wang

et al. 2013

J. Electrochem. Soc.

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The specific heat capacity of lithium thionyl chloride batteries is measured with precise specific heat capacity test apparatus. The experiment instrument is calibrated with standard sample brass with the same geometry of battery. Different heating end temperatures during the measurement do not affect the heat capacity measurements. Experiment analysis reveals that the heat loss part which is not proportional to the calorimeter liquid temperature change cannot be neglected. The heat capacity is independent on the discharge current. At 100% depth of discharge, the battery loses 17.1% of the initial heat capacity 904 J kg −1 K −1 . Both experimental and computational results show that the heat capacity reduces as battery discharges at certain currents, and this is different from available published results. Heat capacity loss increases the difficulty of battery module thermal design especially at the end of discharge when both the ambient temperature and the interior battery temperature are high.

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Thermophysical Properties of Lithium Alloys for Thermal Batteries

Cited by 6 publications

References 8 publications

A new method for thermal conductivity measurement: application to complex heterogeneous materials used in thermal batteries

A new method for thermal conductivity measurement: application to complex heterogeneous materials used in thermal batteries

Thermal transport of glasses via machine learning driven simulations

Experimental Study on Specific Heat Capacity of Lithium Thionyl Chloride Batteries by a Precise Measurement Method

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