scholarly journals Charge transport modelling of Lithium-ion batteries

2021 ◽  
pp. 1-49
Author(s):  
G. W. RICHARDSON ◽  
J. M. FOSTER ◽  
R. RANOM ◽  
C. P. PLEASE ◽  
A. M. RAMOS
Keyword(s):  
Charge Transport ◽  
Lithium Ion Batteries ◽  
Electrochemical Behaviour ◽  
Lithium Ion ◽  
Active Electrode ◽  
Transport Modelling ◽  
Current State ◽  
Lithium Transport ◽  
Concentrated Electrolytes ◽  
Modelling Assumptions

This paper presents the current state of mathematical modelling of the electrochemical behaviour of lithium-ion batteries (LIBs) as they are charged and discharged. It reviews the models developed by Newman and co-workers, both in the cases of dilute and moderately concentrated electrolytes and indicates the modelling assumptions required for their development. Particular attention is paid to the interface conditions imposed between the electrolyte and the active electrode material; necessary conditions are derived for one of these, the Butler–Volmer relation, in order to ensure physically realistic solutions. Insight into the origin of the differences between various models found in the literature is revealed by considering formulations obtained by using different measures of the electric potential. Materials commonly used for electrodes in LIBs are considered and the various mathematical models used to describe lithium transport in them discussed. The problem of upscaling from models of behaviour at the single electrode particle scale to the cell scale is addressed using homogenisation techniques resulting in the pseudo-2D model commonly used to describe charge transport and discharge behaviour in lithium-ion cells. Numerical solution to this model is discussed and illustrative results for a common device are computed.

scholarly journals Aging Mechanisms of Electrode Materials in Lithium-Ion Batteries for Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Cheng Lin ◽  
Aihua Tang ◽  
Hao Mu ◽  
Wenwei Wang ◽  
Chun Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electrochemical Behaviour ◽  
Lithium Ion ◽  
Storage Conditions ◽  
Carbon Anode ◽  
Side Reactions ◽  
Metallic Oxide ◽  
Lithium Ions ◽  
Aging Mechanisms

Electrode material aging leads to a decrease in capacity and/or a rise in resistance of the whole cell and thus can dramatically affect the performance of lithium-ion batteries. Furthermore, the aging phenomena are extremely complicated to describe due to the coupling of various factors. In this review, we give an interpretation of capacity/power fading of electrode-oriented aging mechanisms under cycling and various storage conditions for metallic oxide-based cathodes and carbon-based anodes. For the cathode of lithium-ion batteries, the mechanical stress and strain resulting from the lithium ions insertion and extraction predominantly lead to structural disordering. Another important aging mechanism is the metal dissolution from the cathode and the subsequent deposition on the anode. For the anode, the main aging mechanisms are the loss of recyclable lithium ions caused by the formation and increasing growth of a solid electrolyte interphase (SEI) and the mechanical fatigue caused by the diffusion-induced stress on the carbon anode particles. Additionally, electrode aging largely depends on the electrochemical behaviour under cycling and storage conditions and results from both structural/morphological changes and side reactions aggravated by decomposition products and protic impurities in the electrolyte.

scholarly journals The Effect of Compactness on Laser Cutting of Cathode for Lithium-Ion Batteries Using Continuous Fiber Laser

2019 ◽  
Vol 9 (1) ◽  
pp. 205 ◽  
Author(s):  
Dongkyoung Lee ◽  
Byungmoon Oh ◽  
Jungdon Suk
Keyword(s):  
Lithium Ion Batteries ◽  
Performance Improvement ◽  
Laser Cutting ◽  
Material Removal ◽  
Lithium Ion ◽  
Kerf Width ◽  
Favorable Effect ◽  
Continuous Fiber ◽  
Active Electrode ◽  
Geometrical Characteristics

Lithium-Ion Batteries (LIB) are growing in popularity for many applications. Much research has been focusing on battery performance improvement. However, few studies have overcome the disadvantages of the conventional LIB manufacturing processes. Laser cutting of electrodes has been applied. However, the effect of electrodes’ chemical, physical, and geometrical characteristics on the laser cutting has not been considered. This study proposes the effect of compression of cathode on laser cutting for lithium-ion batteries. The kerf width and top width of the specimens with laser irradiation are measured and the material removal energy is obtained. Observations of SEM photographs and absorptivity measurements are conducted. Increasing volume energies causes logarithmic increases in the kerf and top width. It is observed that the compressed cathode forms a wider kerf width than the uncompressed cathode under the same laser parameters. The top width of the uncompressed cathode is wider than the uncompressed cathode. The compression has a favorable effect on uniform cutting and selective removal of an active electrode.

A Linearized Model for Lithium Ion Batteries and Maps for their Performance and Failure

2012 ◽  
Vol 79 (3) ◽  
Author(s):  
Rajlakshmi Purkayastha ◽  
Robert M. McMeeking
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
State Of Charge ◽  
Spherical Particles ◽  
Lithium Transport ◽  
Constant Rate ◽  
Shrinkage And Swelling ◽  
Linearized Model ◽  
Rate Of Extraction ◽  
Average State

A linearized model is developed for lithium ion batteries, relying on simplified characterizations of lithium transport in the electrolyte and through the interface between the electrolyte and the storage particles of the electrodes. The model is valid as a good approximation to the behavior of the battery when it operates near equilibrium, and can be used for both discharge and charging of the battery. The rate of extraction of lithium from and to the electrode storage particles can be estimated from the results of the model, information that can be used in turn to estimate the shrinkage and swelling stresses that develop in the particles. Given specified rates of extraction for spherical particles, maps of the resulting shrinkage and swelling stresses can be developed connecting their values to battery parameters such as particles size, diffusion coefficient, lithium partial molar volume, and particle elastic properties. Since a constant rate of extraction can only be achieved for a limited period of time until the concentration of lithium at the particle perimeter constrains the lithium mass transport, plots of the average state of charge in the particle versus time are also produced.

scholarly journals Charge Transport in Single NCM Cathode Active Material Particles for Lithium-Ion Batteries Studied under Well-Defined Contact Conditions

2019 ◽  
Vol 4 (9) ◽  
pp. 2117-2123 ◽  
Author(s):  
Simon Burkhardt ◽  
Markus S. Friedrich ◽  
Janis K. Eckhardt ◽  
Amalia C. Wagner ◽  
Nicole Bohn ◽  
...  
Keyword(s):  
Charge Transport ◽  
Lithium Ion Batteries ◽  
Active Material ◽  
Lithium Ion ◽  
Contact Conditions
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