Directory

CNRS Research Fellow

CNRS Research Fellow

Functions :

• CNRS Research Fellow (Section 15 – Chemistry of materials, nanomaterials and processes)
• 2023-2025: Marie Skłodowska-Curie Individual Fellow (MSCA-PF)
• 2020-2023: Postdoctoral researcher with Pf. J. P. Hofmann, Pf. W. Jaegermann and Dr. T. Mayer at the Technical University of Darmstadt, Germany

Qualifications :

• 2019 : PhD thesis from the University of Lyon in Chemical Physics and Catalysis under the supervision of Dr. C. Geantet, Dr. E. Puzenat, Dr. L. Cardenas, Dr. P. Afanasiev
• 2016: Master’s degree from ENSMAC (formerly ENSCBP) and the University of Bordeaux, specializing in Chemical Physics, Materials Chemistry and Energy.

Expertises :

Photoelectron spectroscopy for solar energy conversion materials.

Main research themes:

• Thin films and nanopowders: oxides, oxynitrides, chalcogenides
• Photoelectron spectroscopy: (XPS, UPS, Synchrotron)
• Photocatalysis, Photoelectrocatalysis, Solar fuels

Current research projects :

• Coordinator of the Marie Skłodowska-Curie Individual Fellow Project (MSCA-PF) “Valence band engineering of oxidation materials for cheap and sustainable solar fuel production” (OMATSOLFUEL) (2023-2025).
• Member of the ANR “Visible-light Photocatalysis with Ambipolar layered CHAlcogenides for Solar fuel generation” (PACHAS) (2025-2029).
• Member of ANR “Bi-Based nanOmaterials for Photocatalysis” (BiBOP) (2024-2028)
• Member of ANR “Development of a membrane-cell for in situ NAP-XPS characterization” (NACELL) (2022-2027)
• Member of the MITI project “Des matériaux Moins nobles pour une cause Noble: vers le verdissement de la dépollution des Eaux à grande échelle par électro-oxydation” (DauMiNEau) (2024-2025)

Activities in the research community :

• Member of GDR CarMANano (Groupement De Recherche Caractérisation et mesures à l’échelle nanométrique)
• Responsible for the Linkedin page of the Photoemission Spectroscopy Research Federation (FR SPE)

Biography:

Clément Maheu has been a CNRS research fellow at the Institut des Matériaux de Nantes Jean Rouxel (IMN) since 2023. A specialist in materials for solar energy conversion, he designs and characterizes semiconductors (oxides, chalcogenides, oxynitrides, etc.) for the photo(electro)catalytic production of hydrogen and high value-added molecules. In particular, it has strong expertise in photoelectron spectroscopy (XPS, UPS, SXPS) to characterize the surface of these materials.

He obtained his PhD at IRCELYON, under the supervision of Drs. Afanasiev, Cardenas, Géantet and Puzenat, on TiO2-supported transition metal sulfide co-catalysts for the photoconversion of alcohols. He deepened his expertise in photoelectron spectroscopy at the Technical University of Darmstadt, with Dr. Mayer, Prof. Jaegermann and Prof. Hofmann, applying these techniques to energy materials (photovoltaics, batteries and fuel cells). Back in France, he joined IMN, first as a postdoc on a Marie Skłodowska-Curie European fellowship, then as a full professor. In 2024, he was awarded the Junior Researcher prize by the Transversal Energy Division of the Société Chimique de France. More recently, he has initiated collaborations with researchers in the humanities and social sciences to question the deployment of photo(electro)catalytic technologies and maximize their environmental and social impact.

Awards :

• Junior researcher award from the Société Chimique de France’s Transversal Energy Division
• Thesis prize from the Catalysis 2020 Division of the Société Chimique de France

Publications :

33 (as of 05/2025)

Major illustrative publications:

• C. Maheu, V. Vandalon, M. Mattinen, T. Mayer, A. A. Bol, J. P. Hofmann, p-Type Al-Doped MoS2 Nanosheet Films: Electronic and Chemical Interface Properties with Gold for Electronic Device Integration, ACS Applied Nano Materials, 2025, 8, 9669.
• V. Nikolaou, D. Romito, C. Maheu, J. Hamon, E. Gautron, F. Massuyeau, S. Jobic, F. Odobel, Dual solar-driven hydrogen evolution and alcohol oxidation with CdS quantum dot-sensitized photocatalysts prepared by the SILAR methodology, Journal of Materials Chemistry A, 2024, 12, 30885-30891.
• C. Maheu, T. Hellmann, C. Prabowo, W. Jaegermann, J. P. Hofmann, T. Mayer, Photoelectron Spectroscopy of Co-evaporated and Spin-Coated LiTFSI-Doped Spiro-OMeTAD Reveals the Interface Energetics Inside a MAPI-based Perovskite Solar Cell, J. Phys. Chem. C, 2023, 127, 43, 21351-21362.
• C. Maheu, E. Puzenat, P. Afanasiev, L. Cardenas, C. Geantet, Photocatalytic production of H2 is a multi-criteria optimization problem: case study of RuS2/TiO2, Catalysis Today, 2021, 377, 166-175.
• C. Maheu, L. Cardenas, E. Puzenat, P. Afanasiev, C. Geantet, UPS and UV Spectroscopies combined to position the energy levels of TiO2 anatase and rutile nanopowders, Physical Chemistry Chemical Physics, 2018, 20, 40, 25629-25637.

Link to publi HAL : https://hal.science/search/index/q/*/authIdHal_s/clement-maheu

Link to orcid :https://orcid.org/0000-0001-5417-5672

Link to scholar.google.fr : https://scholar.google.com/citations?user=u3bDR5MAAAAJ&hl=fror

Other links :

https://clementmaheu.wordpress.com/

https://www.linkedin.com/in/clément-maheu-a922808a

https://bsky.app/profile/maheuclement.bsky.social

https://www.researchgate.net/profile/Clement-Maheu-2

CNRS Research Fellow

Senior Lecturer

University Professor

Function:

Professor at Nantes University

Qualifications :

ENSIC engineer (1991), Doctorate in Materials Chemistry (1994).

Expertises :

• Chemistry of materials, especially batteries
• Spectroscopic (EELS, XAS, XPS) and microscopic (MET, STEM, SEM, etc.) characterizations
• Electronic structures of solids

Main research themes:

• Li-ion batteries
• Development of advanced EELS methods (plasmon, low dose, etc.)
• Nanoscale characterization of materials

Activities in the research community :

• Vice-President of the Société Française des Microscopies (2025)
• Editor-in-Chief of the European Physical Journal- Applied Physics (EPJ-AP).

Biography:

Philippe Moreau is Professor at the Institut des Matériaux de Nantes Jean Rouxel (Nantes University – CNRS). An engineering graduate of ENSIC Nancy, he obtained a PhD in materials chemistry in Nantes, before specializing in EELS spectroscopy at the Cavendish Laboratory (University of Cambridge). An expert in transmission electron microscopy (TEM/STEM), he has been developing high-resolution structural and spectroscopic characterization approaches for over twenty years, notably on the Nant’Themis monochromate microscope. He teaches undergraduate and graduate courses in inorganic chemistry, crystallography, electron microscopy and electron spectroscopy. His research focuses on structural analysis at different scales, fine chemical analysis, oxidation states and electronic excitations, particularly as applied to battery materials. In this case, he is interested in electrochemical degradation, interfaces and lithiation mechanisms. He is involved in several industrial and academic projects (national and European) on nanomaterials and materials for all-solid or liquid electrolyte batteries.

Teaching :

Lectures, practical work, laboratory tests at all levels of the university from L1 to M2 (12 different teaching units), mainly in general and inorganic chemistry, and spectroscopic (EELS, EDX, etc.) and microscopic (MET, SEM, etc.) characterizations.

Publications :

Number of publications: 95

Major illustrative publications:

• “Structural and property engineering of 2D titanium carbides (MXene) thin films using ion irradiation”, Applied Surface Science

2024-04 | Journal article

DOI: 10.1016/j.apsusc.2023.159206

Contributors: Ayoub Benmoumen; Marie-Laure David; Eric Gautron; Simon Hurand; Sophia Tangui; Lola Loupias; Aurélien Habrioux; Stéphane Célérier; Philippe Moreau; Vincent Mauchamp

• Tailoring the Fueling Capability of Halide Solid Catholyte through Composition. Correlation with the Underlying Redox Mechanism, ACS Materials Letters

2024-11-04 | Journal article

DOI: 10.1021/acsmaterialslett.4c01497

Contributors: Branimir Stamenkovic; Eric Quarez; Irina Profatilova; Vasily Tarnopolskiy; Nicolas Dupré; Philippe Moreau; Joel Gaubicher

• “Pristine Surface of Ni-Rich Layered Transition Metal Oxides as a Premise of Surface Reactivity,” ACS Applied Materials & Interfaces.

2022-09-21 | Journal article

DOI: 10.1021/acsami.2c09358

Contributors: Angelica Laurita; Liang Zhu; Pierre-Etienne Cabelguen; Jérémie Auvergniot; Jonathan Hamon; Dominique Guyomard; Nicolas Dupré; Philippe Moreau

• “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,” Advanced Energy Materials.

2022-03 | Journal article

DOI: 10.1002/aenm.202103348

Part of ISSN: 1614-6832

Part of ISSN: 1614-6840

• “Nanoscale Morphological Characterization of Coordinated Binder and Solid Electrolyte Interphase in Silicon-Based Electrodes for Li-Ion Batteries,” Small Methods.

2022-08-02 | Journal article

DOI: 10.1002/smtd.202200827

Part of ISSN: 2366-9608

Part of ISSN: 2366-9608

• “Determination of the key structural factors affecting permeability and selectivity of PAN and PES polymeric filtration membranes using 3D FIB/ SEM”, Journal of Membrane Science.

2022-07 | Journal article

DOI: 10.1016/j.memsci.2022.120530

Part of ISSN: 0376-7388

• “Thermomechanical Polymer Binder Reactivity with Positive Active Materials for Li Metal Polymer and Li-Ion Batteries: An XPS and XPS Imaging Study”, ACS Applied Materials & Interfaces

2019-05-22 | Journal article

DOI: 10.1021/acsami.9b01761

Contributors: Rabeb Grissa; Alla Abramova; Sacris-Jeru Tambio; Margaud Lecuyer; Marc Deschamps; Vincent Fernandez; Jean-Marc Greneche; Dominique Guyomard; Bernard Lestriez; Philippe Moreau

Number of patents: 3

Link to publi HAL :

Link to orcid: https://orcid.org/0000-0002-1691-1592

LinkedIn : https://www.linkedin.com/in/philippe-moreau-98a83879/

Société Française des Microscopies: https://sfmu.fr/fr/