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courbe en fond

Non permanents



Descriptif des activités de recherche

Current research on Na-ion batteries presents a deficit concerning the materials for negative electrodes. Nowadays, hard carbons have gathered all the attention, however they present high irreversible capacities, high fabrication costs and relatively low specific capacity (<300 mAh/g). Silicon has been studied as anode material for Li-ion battery, with promising results. Recent studies have demonstrated that the reaction between Silicon and Sodium can be accessible. The aim of this research is to take advantage of different synthesis methods, which will provide different structures and morphologies in order to favour the electrochemical reaction between sodium and silicon. Studied phases may include Si1-xGex, CaSi2, CaGe2, NaSi, KaSi and Zintl.

Parcours

PhD : Vincent Seznec (LRCS) , Mathieu Morcrette (LRCS),  Laure Monconduit (ICGM Montpellier), 2016-2019
Nouveaux matériaux d’électrodes négatives pour batteries Na-ion.

Master Erasmus Mundus Materials for Energy Storage and Conversion, 2014-2016

S1: Université Paul Sabatier, S2: Warsaw University of Technology, S3: Universidad de Córdoba, Master thesis: Laboratoire de Réactivité et Chimie des Solides & Institut Charles Gerhardt (Montpellier).


Compétences

Slurry preparation, electrochemical cycling, mechanosynthesis, In situ and ex situ X-Ray diffraction.

Projets en cours

Nouveaux matériaux d’électrodes négatives pour batteries Na-ion. Bourse Ministère, 2016-2019.


Siloxene: A potential layered silicon intercalation anode for Na, Li and K ion batteries

Laura C. Loaiza, Laure Monconduit, Vincent Seznec

Journal of Power Sources, 2019

Electrochemical Lithiation of Ge: New Insights by Operando Spectroscopy and Diffraction

L.C. Loaiza, N. Louvain, B. Fraisse, A. Boulaoued, A. Iadecola, P. Johansson, L. Stievano, V. Seznec, L. Monconduit

The Journal of Physical Chemistry C, 2018

Understanding the lithiation/delithiation mechanism of Si1−xGex alloys

LC. Loaiza, E. Salager, N. Louvain, A. Boulaoued, A. Iadecola, P. Johansson, L. Stievano, V. Seznec, L. Monconduit

Journal of Materials Chemistry A, 2017

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