Lattice Boltzmann Simulation for Electrolyte Transport in Porous Electrode of Lithium Ion Batteries

2013 ◽  
Vol 160 (4) ◽  
pp. H258-H265 ◽  
Author(s):  
Sang Gun Lee ◽  
Dong Hyup Jeon ◽  
Byung Moon Kim ◽  
Jung Ho Kang ◽  
Charn-Jung Kim
Keyword(s):  
Lithium Ion Batteries ◽  
Lattice Boltzmann ◽  
Porous Electrode ◽  
Lithium Ion ◽  
Electrolyte Transport ◽  
Lattice Boltzmann Simulation

scholarly journals Electrochemical Model-Based Investigation of Thick LiFePO4 Electrode Design Parameters

Modelling ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 259-287
Author(s):  
Robert Franke-Lang ◽  
Julia Kowal
Keyword(s):  
Lithium Ion Batteries ◽  
Porous Electrode ◽  
Lithium Ion ◽  
Size Composition ◽  
Design Parameters ◽  
Model Parameters ◽  
Electrode Structure ◽  
Transport Channel ◽  
Scale Particle ◽  
Electrochemical Model

The electrification of the powertrain requires enhanced performance of lithium-ion batteries, mainly in terms of energy and power density. They can be improved by optimising the positive electrode, i.e., by changing their size, composition or morphology. Thick electrodes increase the gravimetric energy density but generally have an inefficient performance. This work presents a 2D modelling approach for better understanding the design parameters of a thick LiFePO4 electrode based on the P2D model and discusses it with common literature values. With a superior macrostructure providing a vertical transport channel for lithium ions, a simple approach could be developed to find the best electrode structure in terms of macro- and microstructure for currents up to 4C. The thicker the electrode, the more important are the direct and valid transport paths within the entire porous electrode structure. On a smaller scale, particle size, binder content, porosity and tortuosity were identified as very impactful parameters, and they can all be attributed to the microstructure. Both in modelling and electrode optimisation of lithium-ion batteries, knowledge of the real microstructure is essential as the cross-validation of a cellular and lamellar freeze-casted electrode has shown. A procedure was presented that uses the parametric study when few model parameters are known.

scholarly journals Simulation for All-Solid State Batteries with Multi-Element Network Model

2021 ◽  
Vol 333 ◽  
pp. 17002
Author(s):  
Ryusei Hirate ◽  
Hiroki Mashioka ◽  
Shinichiro Yano ◽  
Yoshifumi Tsuge ◽  
Gen Inoue
Keyword(s):  
Lithium Ion Batteries ◽  
Performance Improvement ◽  
Layer Structure ◽  
Porous Electrode ◽  
Phase Interface ◽  
Lithium Ion ◽  
Interface Model ◽  
Electrode Structure ◽  
Electrode Layer ◽  
Solid State Batteries

In order to increase energy density and enhance safety, all-solid-sate lithium-ion batteries have been developed as a storage battery for electric vehicle (EV). Further performance improvement of all-solid-sate lithium-ion batteries requires optimization of the electrode structure. In this paper, we constructed a phase interface model focusing on the microstructure of the porous electrode, and examined the reaction of the electrode layer structure.

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