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- W4220784784 abstract "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." @default.
- W4220784784 created "2022-04-03" @default.
- W4220784784 creator A5004134021 @default.
- W4220784784 creator A5013132420 @default.
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- W4220784784 creator A5075364570 @default.
- W4220784784 date "2022-03-30" @default.
- W4220784784 modified "2023-10-05" @default.
- W4220784784 title "Understanding Electrolyte Filling of Lithium‐Ion Battery Electrodes on the Pore Scale Using the Lattice Boltzmann Method" @default.
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- W4220784784 doi "https://doi.org/10.1002/batt.202200090" @default.
- W4220784784 hasPublicationYear "2022" @default.