Directory

University Professor

University Professor

CNRS Research Director

Current functions / Current:

CNRS researcher CRCN (Section13 – Chimie physique, théorique et analytique), chair of ” Fuel Cells and electrolysers ” team of the ST2E group

Previous / Before functions

• 2006- : CNRS researcher in the team ” FuelCells and electrolysers ” of the ST2E group of IMN
• 1994-2006: CNRS researcher in the team ” Lithium batteries ” of the ST2E group of IMN
• 1990-1994: CNRS researcher CRCN (Section13 – Physical, theoretical and analytical chemistry), in the ” Laboratoire d’Electrochimie Organique ” of Clermont-Ferrand

Qualifications (Research Themes):

• 2000: HDR fromUniversity of Nantes
• 1991: PhD thesis (“Doctorat d’Etat es-Sciences Physiques”) at the University of Paris VI
• 1988 : Engineer degree from the “Ecole Supérieure de Physique et Chimie de Paris” (ESPCI)

Research topics (Research Themes):

• High temperature Fuel Cells (SOFC) and electrolysers (SOEC),
• Electrochemistry: Electrodeposition and Electrochemical Impedance analysis
• Solid state and materials chemistry
• Fuel cell performance testing

Animation de la recherche (Research Community Activities / Teaching Responsibilities):

• Chair of Fuel-cellsub-group of the Electrochemical Storage and Conversion of Energy team of IMN
• Member of the executive board of FRH2 French Research network (FR2044) devoted to Hydrogen
• Responsibility of the relations between IMN and the general public, including schools
• Responsibility of the relations between IMN and the West Atlantic Marine Energy Community

Teaching :

• Course in Master 2 “Energies Nouvelles et Renouvelables” at University of Nantes (2017- )
• Course in specialized master “Eco-Innovation and New technologies for Energy” at the Institut Catholique des Arts et Métiers (ICAM), Nantes in (2019- )

Publications:

• 77 publications in international peerreviewed journals
• 1 book chapter
• 3 patents

Ressources en ligne / Online resources:

Scopus: https://www.scopus.com
ResearchGate : https://www.researchgate.net/profile/Annie_Le_gal_la_salle
ORCID : http://orcid.org/0000-0002-8818-0071

Senior Lecturer

Functions :

• Senior Lecturer HC
• Deputy Director, IMN
• PLASSMAT platform coordinator
• CNRS Sustainable Development Officer

Expertises :

Transmission electron microscopy

Teaching :

UFR Sciences & techniques – Chemistry Department

Link to orcid: https://orcid.org/0009-0008-0063-451X

Senior Lecturer

Functions :

• Associate Professor in Thin-Film Photovoltaics – Institute of Materials of Nantes Jean Rouxel (IMN-UMR6502)
• Director of the Preparatory Cycle- Polytech Nantes School of Engineering

Qualifications :

• 63 – Electrical, Electronic, Photonic, and Systems Engineering
• 28 – Condensed Matter and Materials

Expertises :

• Photovoltaics
• Chalcogenide thin films coevaporation

Main research topics
Low-temperature synthesis of wide bandgap selenide absorbers for PV applications

Current research projects :

• SITA HORIZON CL5-D3-02-04
• PASTEL ANR-PRCE CE05
• SIPHON ANR-JCJC-CE05
• IOTA PEPR-TASE 22-PETA-0005 2024, ongoing
• PARACELSis M.ERA-NET

Biography:
Thomas Lepetit received his M.S. in Applied Physics from the École Normale Supérieure de Cachan in 2012 and his Ph.D. in Materials Science from the University of Nantes in 2015. His doctoral research focused on the synthesis and characterization of chalcogenide thin films for photovoltaic applications, particularly heavy alkali post-treatments applied to Cu(In,Ga)Se₂ absorbers, which enable high photovoltaic conversion efficiencies. He also explored in-situ treatments based on metal halides, which promote crystallization and support low-temperature growth.
Dr. Lepetit is currently an associate researcher at the Institut des Matériaux Jean Rouxel (IMN) and leads the preparatory cycle at Polytech Nantes, the engineering school of Nantes University, managing a cohort of approximately 350 students. He is or has been actively involved in several national (ANR-PRCE PASTEL, ANR-PEPR IOTA, ANR-JCJC SIPHON) and international (HORIZON-SITA, M-ERA.NET PARACELSis) research projects, including the co-supervision of three postdoctoral researchers and two Ph.D. candidates. He has co-authored more than 20 articles in peer reviewed journal (h-index of 12).

Teaching:
Electromagnetsim, Optics, Power electronics conversion, Multidisciplinary projects

Publications:
20 peer-reviewed publications
index: 12
i10 index: 16

• Palmiotti, E., Tsoulka, P., Poudel, D., Marsillac, S., Barreau, N., Rockett, A., & Lepetit, T. (2022). Homogeneous CuGaSe2 growth by the CuPRO process with In-Situ AgBr treatment. Thin Solid Films, 762, 139488. (https://doi.org/10.1016/j.tsf.2022.139488)
• Lepetit, T., Harel, S., Arzel, L., Ouvrard, G., & Barreau, N. (2017). KF post deposition treatment in co-evaporated Cu(In,Ga)Se2 thin film solar cells: Beneficial or detrimental effect induced by the absorber characteristics. Progress in Photovoltaics: Research and Applications, 25(12), 1068-1076. (https://doi.org/10.1002/pip.2924)
• Lepetit, T., Harel, S., Arzel, L., Ouvrard, G., & Barreau, N. (2016). Coevaporated KInSe2: a fast alternative to KF postdeposition treatment in high-efficiency Cu(In,Ga)Se2 thin film solar cells. IEEE Journal of Photovoltaics, 6(5), 1316-1320. (https://doi.org/10.1109/jphotov.2016.2589365)

Link to publi HAL: https://cv.hal.science/thomas-lepetit
Link to orcid: 0000-0003-4010-2282
Link to scholar.google.fr: https://scholar.google.com/citations?user=DkHzmC0AAAAJ&hl=fr&oi=ao

University Professor

Function:

Professor

Qualifications :

HDR Nantes University (2013), Thesis INSA Lyon (2000)

Expertises :

• Lithium-ion batteries
• Lithium batteries
• Polymer and composite materials
• Electrode formulation
• Electrode manufacturing

Main research themes:

• Formulation of silicon-based negative electrodes for lithium-ion batteries
• Dry electrode manufacturing
• Recycling of lithium-ion battery electrode materials
• Design of separators and current collectors for lithium batteries

Current research projects :

• 2023-28, PEPR project SONIC batteries (Solid-state Organic anioNIC battery), directed by P. Poizot
• 2025-28 PEPR project SYNERGIE (CloSed-loop recYcliNg of matERials from Graphite anodes and cathodes of Li-ion batterIEs), directed by L. Svekova
• 2022-25 DEFIBATT project (from the “Innovative Solutions and Technologies for Batteries” Call for Projects under the Avenir investment program), led by ARMOR
• 2014-… Joint laboratory with ARMOR BATTERY FILMS
• 2022-… Joint laboratory with BLUE SOLUTIONS

Biography :

As a chemical engineer, I did a thesis and then a post-doc in the field of polymer and composite materials, working on adhesion and bonding issues. In 2001, I joined Polytech Nantes, the materials science department of the University of Nantes engineering school, to teach polymer and composite materials, and bonding; and the “lithium batteries” group in the ST2E (Stockage et Transformation Electrochimiques de l’Energie) team, headed by D. Guyomard, at the Institut des Matériaux Jean Rouxel (IMN). At Polytech, I was responsible for the 4th year of the Materials department at Polytech Nantes for 10 years (2015-25). At IMN, I’ve been co-leader of the ST2E team’s battery group since 2009. As soon as I arrived at IMN, I initiated a research theme that was new to IMN, and little developed in the national academic community: the formulation of lithium battery electrodes. Today, I’m one of the international leaders in this field of research, which is crucial for optimizing the electrochemical performance of industrial batteries. This has led me to work with numerous companies, to lead two ANR projects (CALICE then PEPITE in 2010-13 and 2015-19), and to be in charge for IMN of various European projects (EUROLIION in 2011-15 and DESTINY in 2020-25 and 2026-30), and the TOURS 2015 project (2015-19) selected as part of the “Nanoelectronics n°1” call for projects of the Investissements d’Avenir. From 2014 onwards, I was involved in setting up, leading and steering the joint laboratory with ARMOR, which led to the creation of a battery prototyping platform at IMN and Nantes University.

Teaching :

• Courses, tutorials, practical work and projects on polymer and composite materials in the materials department at Polytech Nantes
• Course on battery electrode formulation in the Master Sciences de la matière, Energies Nouvelles Renouvelables course at the UFR Sciences et Techniques de Nantes Université (M2ENR), at ENSMAC (5th year of the engineering curriculum), and in the “Battery technologies and impedance” module (M2 level) of the Erasmus Mundus Joint Master Degree in Materials Science and Electrochemistry (MESC+).

Publications :

Number of publications: >125

Major illustrative publications

• C. Meyssonnier, C. Chalard, A. Merabet, N. Goubard-Breteshé, N. Dupré, C. Paireau, B. Lestriez, “SiOx-rich electrode directly optimized using key formulation parameters”, J. Electrochem. Soc. 2024, 171, 070501, https://doi.org/10.1149/1945-7111/ad5a41
• J. A. Barreras-Uruchurtu, N. Besnard, C. Paul, L. Marchal, S. Devisme, B. Lestriez, “Effect of the physicochemical properties of PVdF on dry-sprayed graphite electrodes for lithium-ion batteries for electric vehicle applications”, J. Electrochem. Soc. 2024, 171, 12053, https://iopscience.iop.org/article/10.1149/1945-7111/ad9a08
• J. Xiong, N. Dupré, P. Moreau, B. Lestriez, “From the direct observation of a PAA based binder using STEM-VEELS to the ageing mechanism of silicon/graphite anode with high areal capacity cycled in an FEC-rich and EC-free electrolyte”, Adv. Energy Mater, 2022, 2103348, https://doi.org/10.1002/aenm.202103348
• M. Bichon, D. Sotta, E. De Vito, W. Porcher, B. Lestriez, “Performance and Ageing Behavior of Water-Processed NMC532/Graphite Lithium-Ion Cells”, J. Power Sources, 483, 2021, 229097, https://doi.org/10.1016/j.jpowsour.2020.229097
• S. J. Tambio, F. Cadious, E. Maire, N. Besnard, M. Deschamps, B. Lestriez, “The concept of effective porosity in the discharge rate performance of high-density positive electrodes for automotive application with the diffusion-limited penetration depth model”, J. Electrochem. Soc. 167, 2020, 160509, https://iopscience.iop.org/article/10.1149/1945-7111/abcb42
• V. Vanpeene, J. Villanova, A. King, B. Lestriez, E. Maire, L. Roué, “Dynamics of the morphological degradation of Si-based anodes for Li-ion batteries characterized by in-situ synchrotron X-ray tomography”, Adv. Energy Mater. 9, 2019, 1803947, https://doi.org/10.1002/aenm.201803947
• C. Reale Hernandez, A. Etiemble, D. Mazouzi, Z. Karkar*, E. Maire, D. Guyomard, B. Lestriez, L. Roué, “A Facile and Very Effective Method to Enhance the Mechanical Strength and the Cyclability of Si-Based Electrodes for Li-Ion Batteries”, Adv. Energy Mater, 2018, 8, 1701787, https://doi.org/10.1002/aenm.201701787
• C. Real Hernandez, Z. Karkar, D. Guyomard, B. Lestriez, L. Roué, “A film maturation process for improving the cycle life of Si-based anodes for Li-ion batteries”, Electrochem. Commun. 2015, 61, 102-105, http://dx.doi.org/10.1016/j.elecom.2015.10.014
• K-A. Seid, J-C. Badot, C. Perca, O. Dubrunfaut, P. Soudan, D. Guyomard, B. Lestriez, “In-situ multiscale study of ion and electron motions in a lithium-ion battery composite electrode”, Adv. Energy Mater, 2015, 5, 1400903, https://doi.org/10.1002/aenm.201400903
• N. Delpuech, D. Mazouzi, N. Dupre, P. Moreau, M. Cerbelaud, J-S. Bridel, J-C. Badot, E. De Vito, D. Guyomard, B. Lestriez, B. Humbert. “Critical Role of Si Nanoparticles Surface on Lithium Cell Electrochemical Performance Analyzed by FTIR, Raman, EELS, XPS, NMR and BDS Spectroscopies”, J. Phys. Chem. C, 2014, 118, 17318-17331, https://pubs.acs.org/doi/10.1021/jp503949y
• B. P. N. Nguyen, N. A. Kumar, J. Gaubicher, F. Duclairoir, T. Brousse, O. Crosnier, L. Dubois, G. Bidan, D. Guyomard, B. Lestriez, “Nanosilicon-Based Thick Negative Composite Electrodes for Lithium Batteries with Graphene as Conductive Additive”, Adv. Energy Mater, 2013, 3, 1351-1357, https://advanced.onlinelibrary.wiley.com/doi/10.1002/aenm.201300330
• C. Fongy, A.C. Gaillot, S. Jouanneau, D. Guyomard, B. Lestriez, “Ionic vs Electronic Power Limitations and Analysis of the Fraction of Wired Grains in LiFePO4 Composite Electrodes”, J. Electrochem. Soc, 2010, 157, A885-A891, https://beta.iopscience.iop.org/article/10.1149/1.3432559
• W. Porcher, B. Lestriez, S. Jouanneau, D. Guyomard, “Design of Aqueous Processed Thick LiFePO4 Composite Electrodes for High-Energy Lithium Battery”, J. Electrochem. Soc. 2009, 156, A133-A134, https://iopscience.iop.org/article/10.1149/1.3046129/meta
• B. Lestriez, S. Bahri, I. Sandu, L. Roué, D. Guyomard, “On the binding mechanism of CMC in Si negative electrodes for Li-ion batteries”, Electrochem. Commun. 2007, 9, 2801-2806, https://doi.org/10.1016/j.elecom.2007.10.001
• D. Guy, B. Lestriez, D. Guyomard, “New architecture of composite electrode and improved battery performance from smart use of polymers and their properties”, Advanced Materials, 2004, 16, 553-557, https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.200306075

Number of patents: >20

Link to orcid : https://orcid.org/0000-0002-6579-5516

Link to scholar.google.fr : https://scholar.google.fr/citations?view_op=list_works&hl=en&user=z_BL8XMAAAAJ

University Professor

Senior Lecturer

Functions :

Lecturer – Senior Lecturer HC Nantes université (Sorbonne Université 2012-2023)

Qualifications :

HDR Sorbonne Université (2018), Thesis Univ. Pierre et Marie Curie (2007)

Expertises :

Energy storage / Operando analysis / Spectroscopy and near-field microscopy / Electrochemistry

Main research themes:

Li-ion & Zn-ion batteries, exalted Raman spectroscopy

Current research projects :

• 2023-2026 – European project OPINCHARGE(OPerando analyses and modelling of INterface dynamics and CHARGE transport in lithium-ion batteries) – Programme HORIZON-RIA call “Cross-sectoral solutions for the climate transition “, – 10 international partners (Luxembourg, Germany, Switzerland, Spain and France) – Leader: Santhana Eswara Moorthy – 5 million euros – IMN partners: P. Moreau and P. Abellan.
• 2024-2027: ARNT IMN/SAFT project – D. NEAU – ” Etude operando de l’interfaceMnO2/électrolyte au sein des accumulateurs Zn-ion ” – SAFT : F. CHAUVEAU, J. MARBAIX – Direction: I.T. LUCAS, co-direction J. GAUBICHER
• 2023-2027 – ANR Project ZORG – ” Unified Understanding of the Zinc Aqueous (Electro)Chemistry from Multiscale Operando Investigations ” – 42 months – 371 k€ – Lead: J. Gaubicher (IMN) – Partners Ceisam (F. Odobel, C. Queffélec et Y. Pellegrin), CEA (I. Profatilova, S. Genies), CIC (M. Armand).
• 2025-2028: Thesis ED3MG/Tandem Région – In situ/operando diagnosis by fibered vibrational spectroscopy – Direction I. LUCAS, co-direction B. Humbert

Activities in the research community :

Elected member of the CNRS national committee, section 14 2021-2025

Biography:

A specialist in nanomaterials and electrochemistry, my research focuses on the development of various operando tools for characterizing functional materials, including exalted Raman spectroscopies (TERS, SERS) and local probe microscopies through various academic and industrial collaborations. In 2019, I received the “Young Researcher in Electrochemistry” award from the Société Chimique de France (SCF) and the French section of the International Society of Electrochemistry (ISE). After a PhD at Sorbonne University (Dir. P. Turq), a postdoc at Lawrence Berkeley National Lab, California (R. Kostecki), I was appointed lecturer at SU (LISE laboratory) then transferred to the University of Nantes in 2023 (IMN).

Teaching :

Light-matter interaction (including geometric and wave optics, as well as optical and vibrational spectroscopy from L1 to M2) / Electrochemistry (including impedance) / General chemistry (from atomistics, chemical bonding and molecular interactions to crystallography and thermochemistry) / Master MEEF (thermochemistry and electrochemistry, preparation for lessons and set-ups).

Distinction:

ISE Young Researcher Prize in Electrochemistry awarded in 2019.

Publications :

Number of publications: > 50

Major illustrative publications:

• ” Dynamics of transition metal dissolution and cross-contamination in operating Lithium-ion batteries,” Journal of Power Sources, 630, 2025, 236031 – IF 8,1 – https://doi.org/10.1016/j.jpowsour.2024.236031
• ” Solid Electrolyte Interphase Instability in Operating Lithium-Ion Batteries Unraveled by Enhanced-Raman Spectroscopy,” ACS Energy Letters 6 (5), 2021 – 1757-1763 – https://doi.org/10.1021/acsenergylett.1c00436
• “Electrochemical tip-enhanced Raman spectroscopy for the elucidation of complex electrochemical reactions”” Anal. Chem. 96, 2024, 2791-2798 – IF 8 – https://doi.org/10.1021/acs.analchem.3c02601”

Link to publi HAL : ivant-lucas https://cnrs.hal.science/search/index/q/*/authIdHal_s/ivant-lucas

Link to orcid: 0000-0001-8930-0437 / IdRef: 121556352

Link to scholar.google.fr : https://scholar.google.fr/citations?user=0UBm5oMAAAAJ&hl=en

LinkedIn link : https://www.linkedin.com/in/ivantlucas/