Walid Dachraoui

Walid
Dachraoui

• PostDoc

Descriptif des activités de recherche

Recent developments in in-situ liquid TEM opened a new area in the understanding of interface mechanisms during electrochemical cycling of Li-ion batteries such as the kinetics of lithiation, formation of SEI layer, structural accommodation, crystalline transformation and morphological evolution. The goal of this project is to further identify and study phenomena involved in batteries’ efficiency decay, which is mainly related to induced effects of exchange dynamics at electrode/electrolyte interfaces. Thus, he focus on the study of the mechanism of formation of the SEI layer during the first EC cycles and on the electrolyte’s evolution with different analytical TEM techniques in liquid medium. 

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

Operando Liquid-electrochemical TEM for Monitoring Growth and Dissolution Steps of NaO2 Cubes in Na-O2 Battery

Walid Dachraoui, Lukas Lutz, Lee. R. Johnson, Peter G. Bruce, Jean-Marie Tarascon, Alexis Grimaud, Arnaud Demortière

Microscopy and Microanalysis,

2019

In Situ Electron Diffraction using Liquid-Electrochemical TEM for Monitoring Structural Transformation in Single Crystals Of Cathode Materials for Li-Ion Batteries

Olesia M. Karakulina, Walid Dachraoui, Artem M. Abakumov, Joke Hadermann, Arnaud Demortière

Microscopy and Microanalysis,

2019

In Situ Electron Diffraction Tomography Using a Liquid-Electrochemical Transmission Electron Microscopy Cell for Crystal Structure Determination of Cathode Materials for Li-Ion batteries

Olesia M. Karakulina, Arnaud Demortière, Walid Dachraoui, Artem M. Abakumov, Joke Hadermann

Nano Letters,

2018

Preparation and characterization of mechanically alloyed AB3-type based material LaMg2Ni5Al4 and its solid-gaz hydrogen storage reaction

Hassen Jaafar, Luc Aymard, Walid Dachraoui, Arnaud Demortière, Mohieddine Abdellaoui

Journal of Solid State Chemistry,

2018

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Publications

Activation of surface oxygen sites on an iridium-based model catalyst for the oxygen evolution reaction

In-Situ Liquid/Bias Transmission Electron Microscopy to Visualize the Electrochemical Lithiation/Delithiation Behaviors of LiFe0.5Mn0.5PO4

In Situ Electron Diffraction using Liquid-Electrochemical TEM for Monitoring Structural Transformation in Single Crystals Of Cathode Materials for Li-Ion Batteries

In Situ Electron Diffraction Tomography Using a Liquid-Electrochemical Transmission Electron Microscopy Cell for Crystal Structure Determination of Cathode Materials for Li-Ion batteries