Main Research Activities
Industrial PhD (LRCS – Renault, December 2017–). Project: “Gas generation inside the Li-ion batteries: Comprehension of mechanisms and proposition of solutions”. Advisor: Prof. Stéphane LARUELLE. Li-ion batteries are present in almost every electric vehicle. During their use, the liquid electrolyte degrades over time and forms gas. This gas is not only penalizing for the performance of the battery (increase of the internal resistance...), but it also induces mechanical stresses at the level of the modules, leading to their damage. In this same context, this thesis work will allow to study, at first, the physicochemical mechanisms leading to the gas evolution (for the currently used chemistries and those under development); and secondly, it will involve the proposition of approaches to limit or eliminate the gas, especially at the level of electrolyte additives.Academic Training
- Master Erasmus Mundus: Materials for Energy Storage and Conversion (2015–2017).
S1: Université Paul Sabatier (Toulouse, France)
S2: Warsaw University of Technology (Warsaw, Poland)
S3: Universidad de Córdoba (Cordoba, Spain)
S4: Université de Picardie Jules Verne (Amiens, France). Project: “Grafting of organic entities in positive electrode materials to improve its performance”. Advisor: Matthieu BECUWE (LRCS).
- Nanotechnology engineer – (Universidad Autónoma de Querétaro, Mexico; 2010–2015). Final project: “Electrocatalytic study of the enzyme laccase of Trametes versicolor, immobilized in tridimensional carbon structures for its application in microfluidic cells”.
Professional skills
Running Projects
CIFRE Renault–LRCS / 2017–2020 / ANRT
Combining 3D printing of copper current collectors and electrophoretic deposition of electrode materials for structural lithium‑ion batteries
Ana C. Martinez, Alexis Maurel, Bharat Yelamanchi, A. Alec Talin, Sylvie Grugeon, Stéphane Panier, Loic Dupont, Ana Aranzola, Eva Schiaffino, Sreeprasad T. Sreenivasan, Pedro Cortes & Eric MacDonald
2024
Additive manufacturing of LiNi1/3Mn1/3Co1/3O2 battery electrode material via vat photopolymerization precursor approach
Ana C. Martinez, Alexis Maurel, Ana P. Aranzola, Sylvie Grugeon, Stéphane Panier, Loic Dupont, Jose A. Hernandez-Viezcas, Bhargavi Mummareddy, Beth L. Armstrong, Pedro Cortes, Sreeprasad T. Sreenivasan & Eric MacDonald
Scientific Reports, 2022
Chemical reactivity of lithium difluorophosphate as electrolyte additive in LiNi0.6Co0.2Mn0.2O2/graphite cells
AC. Martinez, S. Rigaud, S. Grugeon, P. Tran-Van, M. Armand, D. Cailleu, S. Pilard, S. Laruelle
Electrochimica Acta, 2022
Surface modification of LiFePO4 nanoparticles through an organic/inorganic hybrid approach and its impact on electrochemical properties
Ana Cristina Martinez, Walid Dachraoui, Rajesh Murugesan, Emmanuel Baudrin, Arnaud Demortière, Matthieu Becuwe
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2022
Mass Spectrometry Analysis of NMC622/Graphite Li-Ion Cells Electrolyte Degradation Products after Storage and Cycling
S. Rigaud, AC. Martinez, T. Lombard, S. Grugeon, P. Tran-Van, S. Pilard, S. Laruelle
Journal of The Electrochemical Society, 2022