Electrolyte conditions in lithium-ion batteries in presence of a thermal gradient

Guillamon, Joaquin I.; Love, Corey T.; Carter, R.; Yang, Xiaolong; Verma, Amit

doi:10.1557/s43580-021-00074-5

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…In ionic systems, the simultaneous presence of electric fields and thermal gradients is a hallmark ruling over various physical phenomena and technological applications. 1 The emergence of temperature gradients in electrochemical devices, attributed to the Joule effect, 2,3 and the associated heat release during the corresponding chemical reactions 4,5 ultimately generate a net ionic current. 6,7 This electro-thermal coupling plays a key role in diverse technological domains, spanning nanoengines, 8,9 microfluidics, 10,11 and microbiology.…”

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confidence: 99%

Introducing the concept of generalized thermal diffusivity to understand coupled heat–charge transport in ionic solutions

Cappai,

Dettori,

Marini

et al. 2024

Applied Physics Letters

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A theoretical framework addressing the coupled thermal and charge transport phenomena in ionic solutions is here developed. Starting from the microscopic definitions of thermal and charge currents from Onsager formulation of non-equilibrium thermodynamics, a unique, very general and compact form of the governing differential equation for the evolution of a temperature profile is derived. In particular, the concept of generalized thermal diffusivity is introduced to capture the overall effect of the coupling between heat and charge transport in a single phenomenological coefficient as well as to shed light on the non-equivalent situations of concurrent or discordant heat and charge currents. To validate our theoretical framework, an ionic salt solution of NaCl in water is investigated.

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