Geometrical Effect of Active Material on Electrode Tortuosity in All-Solid-State Lithium Battery

Park, So‐Yeon; Jeong, Jiung; Shin, Heon‐Cheol

doi:10.3390/app122412692

Cited by 8 publications

(2 citation statements)

References 46 publications

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“…With the assumptions mentioned above, eq can be further simplified, yielding eq . In the simplified Bruggeman equation, the effective thermal conductivity κ eff is only a function of κ SE and ϕ SE , as follows κ eff = κ SE ϕ SE ( 1 + n ) / n = κ SE ϕ SE α If the pores are spherical in shape, n = 2, and an exponent of α = 1.5 is obtained. , While an exponent of 1.5 is the theoretical value for polydisperse, homogeneously distributed spheres, in battery materials, the exponent α = (1 + n )/ n is often used as a fitting parameter to cope with more complex pore microstructures, e.g., to describe the partial ionic conductivities of cathode composites , or thermal transport in solid electrolytes and batteries …”

Section: Resultsmentioning

confidence: 99%

“…If the pores are spherical in shape, n = 2, and an exponent of α = 1.5 is obtained. 45,47 While an exponent of 1.5 is the theoretical value for polydisperse, homogeneously distributed spheres, in battery materials, the exponent α = (1 + n)/n is often used as a fitting parameter to cope with more complex pore microstructures, e.g., to describe the partial ionic conductivities of cathode composites 27,50 or thermal transport in solid electrolytes 8 and batteries. 51 By using α to fit the measured relative density-dependent thermal conductivities, the scaling of the thermal conductivity of all materials with density (porosity) can be described with high accuracy (shown for room-temperature data, Figure 4).…”

Section: Characterization Of Thermal Transportmentioning

confidence: 99%

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Thermal Conductivities of Lithium-Ion-Conducting Solid Electrolytes

Böger,

Bernges,

et al. 2023

ACS Appl. Energy Mater.

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Solid electrolytes and solid-state batteries have gathered attention in recent years as a potential alternative to state-of-the-art lithium-ion batteries, given the promised increased energy density and safety following the replacement of flammable organic electrolytes with solids. While ongoing research focuses mainly on improving the ionic conductivities of solid electrolytes, little is known about the thermal transport properties of this material class. This includes fundamental studies of heat capacities and thermal conductivities, application-oriented investigations of porosity effects, and the modeling of the temperature distribution in solid-state batteries during operation. To expand the understanding of transport in solid electrolytes, in this work, thermal properties of electrolytes in the argyrodite family (Li 6 PS 5 X with X = Cl, Br, I, and Li 5.5 PS 4.5 Cl 1.5 ) and Li 10 GeP 2 S 12 as a function of temperature and porosity are reported. It is shown that the thermal conductivities of solid electrolytes are in the range of liquid electrolytes. Utilizing effective medium theory to describe the porosity-dependent results, an empirical predictive model is obtained, and the intrinsic (bulk) thermal conductivities for all electrolytes are extracted. Moreover, the temperature-independent, glass-like thermal conductivities found in all materials suggest that thermal transport in these ionic conductors occurs in a nontextbook fashion.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Thermal Transportmentioning

confidence: 99%

Thermal Conductivities of Lithium-Ion-Conducting Solid Electrolytes

Böger,

Bernges,

et al. 2023

ACS Appl. Energy Mater.

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Laser Etching Post‐Processing to Create Low‐Tortuosity Structured Electrodes for Advanced Sodium‐Ion Batteries

Huang,

Zhang,

Yuan

et al. 2024

Energy Tech

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Constructing low‐tortuosity structure is a facile and effective strategy to significantly improve the electrochemical performances of thick electrodes of batteries. In this study, the low‐tortuosity structured electrodes with an array grooved structure are fabricated using a method of laser etching post‐processing, promoting excellent electrochemical performance of sodium‐ion batteries (SIBs). The effects of laser post‐processing parameters including the etching shape, interval, and scan number on the structures and electrochemical performances of the prepared electrodes are investigated. Results show that the array grooved structures of the laser‐treated electrodes not only reduce the tortuosity to enhance the ion transfer efficiency, but also provide extra space to accommodate more electrolyte, which helps strengthen the electrochemical reaction kinetics of the electrodes. The proposed electrode with a parallelogram etching shape, an interval of 0.1 mm, and a scan number of 10 can produce a high rate capacity of 120.7 mAh g−1 at 500 mA g−1 and an outstanding cycle performance with a high capacity maintenance rate of 97.8% after 200 cycles. This study validates a new method to create low‐tortuosity electrodes for SIBs by optimizing the process parameter, which can be potentially extended to the fabrication of other advanced energy storage devices.

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Advancement of electrically rechargeable multivalent metal-air batteries for future mobility

Alemu¹,

Getie²,

Worku³

2023

Ionics

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The demand for newer, lighter, and smaller batteries with longer lifespans, higher energy densities, and generally improved overall battery performance has gone up along with the need for electric vehicles. Alternatives must be found because lithium sources are limited and the metal is expensive. Aligned with this, efforts are being carried out to enhance the battery performance of electric vehicles and have shown promise in allaying consumer concerns about range anxiety and safety. This demonstrates that the electric car market will remain very dynamic in the coming decades, with costs continuing to fall. However, developing advanced energy storage technologies from more abundant resources that are cheaper and safer than lithium-ion batteries is a viable option for future mobility and product sustainability. This paper recapitulates the current state of multivalent particularly zinc and iron metal-air battery applications for electric mobility. The cycle capability, range, costs, service life, safety, discharge, and charging rate are all investigated. Factors hampering the further development and marketing of these technologies in connection with possible solutions are also conferred.

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Geometrical Effect of Active Material on Electrode Tortuosity in All-Solid-State Lithium Battery

Cited by 8 publications

References 46 publications

Thermal Conductivities of Lithium-Ion-Conducting Solid Electrolytes

Thermal Conductivities of Lithium-Ion-Conducting Solid Electrolytes

Laser Etching Post‐Processing to Create Low‐Tortuosity Structured Electrodes for Advanced Sodium‐Ion Batteries

Advancement of electrically rechargeable multivalent metal-air batteries for future mobility

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