Influence of pressure and temperature on the electrolyte filling of lithium-ion cells: Experiment, model and method

Günter, Florian J.; Keilhofer, Josef; Rauch, Christof; Rößler, Stefan; Schulz, Michael; Braunwarth, Wolfgang; Gilles, Ralph; Daub, Rüdiger; Reinhart, Gunther

doi:10.1016/j.jpowsour.2021.230668

Cited by 27 publications

(39 citation statements)

References 51 publications

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“…In contrast, incomplete filling correlates with 1) small pores (ID 4) and 2) hydrophobic active material (ID 8) and binder (ID 14). These general findings have been shown for single influencing factors in experimental [2,9,[11][12][13]66] and simulative [38, 40-43, 66, 84] studies in the literature. Here, they are quantified and…”

Section: Final Saturation and Gas Entrapmentsupporting

confidence: 71%

“…Electrolyte properties, i.e. surface tension and viscosity, are adjusted by electrolyte additives [12][13][14] or the electrode wettability is improved using coatings or surfactants [6]. Moreover, also structural properties of electrodes and separator are known to have a significant influence on the filling process [1,2,6,9,11,15].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, different experimental studies have investigated the filling process using insitu methods. Amongst those were electrochemical impedance spectroscopy [13,16], neutron radiography [2][3][4]13], X-ray measurements [9], focused ion beam combined with scan-ning electron microscopy [15], thermography [6], and wetting balance tests [6]. However, most of those methods are complex and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

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Understanding Electrolyte Filling of Lithium-Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Lautenschlaeger,

Prifling,

Kellers

et al. 2022

Preprint

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Electrolyte filling is a time-critical step during battery manufacturing that also affects the battery performance. The underlying physical phenomena during filling mainly occur on the pore scale and are hard to study experimentally. In this paper, a computational approach, i.e. the lattice Boltzmann method, is used to study the filling process and corresponding pore-scale phenomena in 3D lithium-ion battery cathodes. The electrolyte flow through the nanoporous binder is simulated using a homogenization approach. Besides the process time, the influence of structural and physico-chemical properties is investigated.Those are the particle size, the binder distribution, and the volume fraction and wetting behavior of active material and binder. Optimized filling conditions are discussed by capillary pressure-saturation relationships. It is shown how the aforementioned influencing factors affect the electrolyte saturation. Moreover, the amount of the entrapped residual gas phase and the corresponding size distribution of the gas agglomerates are analyzed in detail. Both factors are shown to have a strong impact on mechanisms that can adversely affect the battery performance. The results obtained here indicate how the filling process, the final electrolyte saturation, and potentially also the battery performance can be optimized by adapting process parameters and the electrode and electrolyte design.

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Section: Final Saturation and Gas Entrapmentsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understanding Electrolyte Filling of Lithium-Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Lautenschlaeger,

Prifling,

Kellers

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…[11] There are different strategies to prevent the aforementioned limitations and to increase the wettability and the final degree of electrode saturation. Either the filling process is sped up by cell evacuation and applying pressure gradients, [1][2][3][4][5]12,13] applying elevated temperatures, [14] or the physico-chemical properties of electrolyte and electrodes are tuned to improve the filling process. [11] Two main approaches are considered in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…[1,2,6,14,18] Recently, different experimental studies have investigated the filling process using in-situ methods. Amongst those were electrochemical impedance spectroscopy, [13,19] neutron radiography, [2][3][4]13] X-ray measurements, [9] focused ion beam combined with scanning electron microscopy, [18] thermography, [6] and wetting balance tests. [6] However, most of those methods are complex and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Understanding Electrolyte Filling of Lithium‐Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Lautenschlaeger

Prifling

Benjamin

et al. 2022

Batteries & Supercaps

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Electrolyte filling is a time-critical step during battery manufacturing that also affects battery performance. The underlying physical phenomena mainly occur on the pore scale and are hard to study experimentally. Therefore, here, the lattice Boltzmann method is used to study the filling of realistic 3D lithium-ion battery cathodes. Electrolyte flow through the nanoporous binder is modelled adequately. Besides process time, the influences of particle size, binder distribution, volume fraction and wetting behavior of active material and binder are investigated. Optimized filling conditions are discussed by pressure-saturation relationships. It is shown how the influencing factors affect the electrolyte saturation. The amount and distribution of entrapped residual gas are analyzed in detail. Both can adversely affect the battery performance. The results indicate how the filling process, the final electrolyte saturation, and also the battery performance can be optimized by adapting process parameters as well as electrode and electrolyte design.

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Electrolytes for Sodium Ion Batteries: The Current Transition from Liquid to Solid and Hybrid systems

Darjazi,

Falco,

Colò

et al. 2024

Advanced Materials

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Sodium‐ion batteries (NIBs) have recently garnered significant interest in being employed alongside conventional lithium‐ion batteries, particularly in applications where cost and sustainability are particularly relevant. The rapid progress in NIBs will undoubtedly expedite the commercialization process. In this regard, tailoring and designing electrolyte formulation is a top priority, as they profoundly influence the overall electrochemical performance and thermal, mechanical, and dimensional stability. Moreover, electrolytes play a critical role in determining the system's safety level and overall lifespan. This review delves into recent electrolyte advancements from liquid (organic and ionic liquid) to solid and quasi‐solid electrolyte (dry, hybrid, and single ion conducting electrolyte) for NIBs, encompassing comprehensive strategies for electrolyte design across various materials, systems and their functional applications. Our objective is to offer strategic direction for the systematic production of safe electrolytes and to investigate the potential applications of these designs in real‐world scenarios while thoroughly assessing the current obstacles and forthcoming prospects within this rapidly evolving field.This article is protected by copyright. All rights reserved

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Influence of pressure and temperature on the electrolyte filling of lithium-ion cells: Experiment, model and method

Cited by 27 publications

References 51 publications

Understanding Electrolyte Filling of Lithium-Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Understanding Electrolyte Filling of Lithium-Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Understanding Electrolyte Filling of Lithium‐Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method

Electrolytes for Sodium Ion Batteries: The Current Transition from Liquid to Solid and Hybrid systems

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