PhD Studentship: Building Better Batteries: Modelling and Optimisation of Electrode Filling - #48903

University of Warwick


Date: 1 week ago
City: Coventry
Contract type: Full time

PhD

Coventry

UK Students, EU Students, International Students

Fully funded

Full Time

7th February 2024

29th February 2024

hP2024-07

Supervisors:

Supervisors: Dr. Ferran Brosa Planella (Maths), Dr. Radu Cimpeanu (Maths), Prof. Louis Piper (Warwick Manufacturing Group (WMG))

Summary:

Manufacturing not only has a significant impact on battery performance and lifetime, but also on cost and environmental impact. A key process (yet not a well-studied one) is the so-called filling, in which a liquid electrolyte is incorporated into the battery, occupying the pores in the electrodes. It requires keeping the battery at high temperatures for days, becoming a very expensive process both in terms of time and energy usage. In this project, you will have the opportunity to build exciting new capabilities for modelling and optimisation of electrode filling, with a potential to energise our understanding of battery manufacturing.

Manufacturing not only has a significant impact on battery performance and lifetime, but also on its cost and environmental impact. A key process (yet not a well-studied one) is the electrolyte filling, in which the liquid electrolyte is incorporated to the battery and let to fill the pores in the electrodes. This process requires keeping the battery at high temperatures for several days, becoming a very expensive step in battery manufacturing (both in terms of energy and time). In addition, if the electrodes are not fully wetted, the performance of the battery diminishes drastically. Understanding and optimising electrode wetting is key to improve battery performance and reduce the manufacturing cost, but this has mainly been addressed from the experimental side.

The focus of this project is on developing new models for electrode wetting, which can be used to understand and optimise this manufacturing process. We will start with standard models for flow in porous media and adapt them to the particularities of electrode wetting. Such models can later be extended to describe more complex phenomena, such as solvent penetration during the recycling process, or gas formation and metal dissolution during the battery operation.

For the success of this project, a combination of analytical (e.g. asymptotic analysis) and numerical approaches (e.g. finite volume methods) will be required to implement and validate the wetting models. It will be fundamental to deploy the implementations of the models so other researchers and industry can use them, thus the models will be built upon established packages such as PyBaMM and Basilisk. Along with the models, parameterisation tools will be developed and will incorporate uncertainty quantification, which is necessary given the stochasticity of the porous electrode materials.

https://warwick.ac.uk/fac/sci/hetsys/themes/projectopportunities/

Additional Funding Information

Awards for both UK residents and international applicants pay a stipend to cover maintenance as well as paying the university fees and a research training support. The stipend is at the standard UKRI rate.

For more details visit: https://warwick.ac.uk/fac/sci/hetsys/apply/funding/

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