On 22nd january 2019, Caroline Gaya has defended her thesis. Awarded by the University of Picardie Jules Verne, her work was supervised by both LRCS Amiens (UMR CNRS/UPJV 7314), the STS doctoral school (UPJV), and IRT Saint Exupéry.
The high quality and the relevance of Caroline’s thesis contributed to get significant results as a part of CELIA project.
THESIS SUBJECT
“Toward lithium-air batteries for aircraft application: a combined experimental/modeling study”
About his thesis
Nowadays, worldwide connectivity is enhanced by the constant growth of the air traffic. Even if the aeronautical field positively impacts the societies global development, the rising concerns on environmental issues need to be considered will designing aircrafts of tomorrow. In this race for decreasing kerosene consumption, more electrical aircrafts appear as a promising solution, as well as a strong technical challenge.
To power these systems, efficient energy storage devices with high energy densities are required. Along the thesis, lithium-air batteries have then been considered as a potential solution due to their high energy density, close to gasoline one. Yet, nowadays, lithium-air batteries still undergo many technical limitations which significantly decrease their practical performances.
Strong focus on electrode development to enhance the achieved gravimetric and volumetric energy densities was then implemented to repel the occurrence of limitation phenomena. To do so, theoretical study of the limitation factors based on continuum modeling, in parallel to an experimental study to master the electrode texture were implemented. Also, behavior of the batteries along with modifications of the operating conditions have been analyzed.
CELIA Project
Characterizing and modelling aeronautical fuel cells for use on the ground and in the automotive industry.
Jury
- Frédéric FAVIER, Senior Research Scientist – CNRS/ICGM – Rapporter
- Peter NOTTEN, Professor – TuE – Rapporter
- Alejandro FRANCO, Professor – UPJV – Examiner and PhD Advisor
- Natasha KRINS, Associate Professor – CMCP – Examiner
- Yann BULTEL, Professor – LEPMI – Examiner
- Dominique LARCHER, Professor – UPJV – Invited
- Nicolas CHADOURNE, More Electrical Aircraft Platforms Leader – IRT Saint Exupéry – Invited
PUBLICATIONS
“Impact of Li2O2 Particle Size on Li-O2 Battery Charge Process: Insights from a Multi-Scale Modeling Perspective” – Y. YIN, C. GAYA, A. TORAYEV, V. THANGAVEL, A. A. FRANCO – J. PHYS. CHEM. LETT., Journal of Physical Chemistry Letters, 7, pp 3897−3902, 2016.
“Linking the Performances of Li–O2 Batteries to Discharge Rate and Electrode and Electrolyte Properties through the Nucleation Mechanism of Li2O2” – Y. YIN, A. TORAYEV, C. GAYA, Y. MAMMERI, A. A. FRANCO – J. PHYS. CHEM. C, Journal of Physical Chemistry C, 121, pp 19577−19585, 2017
“Investigation of bi-porous electrodes for lithium oxygen batteries” – C. GAYA, Y. YIN, A. TORAYEV, Y. MAMMERI, A. A. FRANCO – ELECTROCHIM. ACTA., Electrochimica Acta, 279, 118-127, 2018
“Impacts of the Electrode Fabrication Process on the Performances of Lithium-Oxygen Batteries” – C. GAYA, A. TORAYEV, Y. YIN, Y. MAMMERI, C. SURCIN, D. LARCHER, B. FLEUTOT, M. MORCRETTE, A. A. FRANCO – ISE 68th Annual Meeting
“Investigation of bi-porous electrodes for Li-02 batteries: from modeling to experimental electrodes development” – C. GAYA, A. TORAYEV, Y. YIN, C. SURCIN, M. COURTY, Y. MAMMERI, B. FLEUTOT, M. MORCRETTE, D. LARCHER, A. A. FRANCO – EMRS Fall Meeting 2018