Institut Charles Gerhardt MontpellierLaurent Aldon
Permanent - MC, Equipe D4
ICGM - UMR 5253
Place Eugène Bataillon
Bât. 15 - 1er étage
34095 Montpellier cedex 5
04 67 14 33 54
Laurent Aldon was born in Clermont-l’Hérault, France, in 1969. He received a Master of Solid State Chemistry diploma from Université Montpellier 2 in 1992.
Working on elaboration and characterization of chalcogenide glasses usable as far Infra-Red filters for night-vision, he obtained his Ph.D. degree in Electronic and Ionic materials in 1996. After some months in a Post-Doc position at II-Physikalisches Institüt Göttingen in the Lab. of Pr. Lieb, in collaboration with Dr. M. Uhrmacher, he get trained to PAC measurements (Perturbed Angular Correlations) on indium sulfide used as electrode material for Li-ion batteries. Then he joined the Université Montpellier 2 as Associate Professor, teaching Metallurgy, Corrosion and Heat Treatment at Institut Universitaire de Technologie of Nîmes (International Welding Technicians).
At the very beginning of its work, in the team of Pr. M. Ribes, he was involved in understanding the role that silver dynamics plays on superionic conduction mechanism in Argyrodite compounds, using Quasi-elastic Neutron scattering at IN16 (Institut Laue-Langevin) in combination with other spectroscopic techniques, like Impedance Spectroscopy. In 1999 he moved to Pr. R. Fourcade team where he gained experience in X-ray diffraction on materials for inorganic (phosphate glasses used for elimination of asbestos) and nuclear wastes (role of microorganisms biomineralization of selenate in soils).
Since 2000, using Mössbauer spectroscopy in the team of Jean-Claude Jumas, he contributed to in situ and operando measurements and data treatments (quadrupole splitting distribution, 2D-correlation spectroscopy) of some rather complicated mechanisms observed upon lithium reaction (57Fe used as local probe in titanate like Li4Ti5O12 or Li2Ti3O7, LiFe1-xMnxPO4, and 119Sn in CoSn2 or Sn-BPO4 glasses). These investigations at atomic scale gave valuable information on lithium insertion or reaction processes in combination with X-ray diffraction, X-ray absorption spectroscopy (Elettra, Trieste). He started a fundamental topic using both mechanical and atomic compressibility concepts and experimental results to get better understanding of electrochemical ageing of electrode materials, responsible of the observed capacity fading upon cycling. He earned a Habilitation qualification (Habilitation à Diriger des Recherches) from the Université Montpellier 2 in 2007.
His current research interests include the study of various electrode materials, both positive and negative, using in situ and operando Mössbauer measurements in the field of Li-ion batteries and he is also involved in some academic project on soft matter, geophysics, corrosion and soil-science.
Thème de Recherche
- Synthesis of electrode materials for advanced Li-ion batteries
- Materials characterization (XRD, 57Fe and 119Sn Mössbauer spectroscopy)
- In situ and operando measurements (2D correlation analysis)
- Instrumentation (Datalogger based on Arduino open-source platform as an entry point to embedded programming)