Abirdu Woreka

Abirdu
Woreka

• PhD student

Thématique(s)

• Electrochimie et optimisation des dispositifs pour le stockage électrochimique
• Synthèses, surfaces, interfaces

Descriptif des activités de recherche

Electrochemical synthesis of Si/TiO2 nanotubes composites as négative électrode material for lithium ion battery.
Supervisors: Jeremy Mallet, Michael Molinari, Claude Guery and Mathieu Morcrette
Goal
To design an alternative  Low cost electrochemical synthesis process for the synthesis of Silicon negative electrode material to reduce the cost limitation of the high vacuume techniques  commenly used for Si material fabrication. To synthèses Si/TiO2 nanotube composite inorder to incorporate silicon in titania matrix to reduce the volume expansion. Silicon directly grown on self-organized TiO2 nanotubes array expected to provide , a facile 1D electron transport, no need of adding binder or conductive additives, good adhesion of silicon to rough titania and large surface area, which all contributes for the improvement of the electrochemical performance of the composite as negative electrode for Li-ion battery.

Parcours

Master (Université de Picardie Jules Verne – MESC , 2013-2015)

Compétences

Electrodeposition,  Anodization, SEM, XRD.

Projets en cours

Three years project,  financed by ADEME Environment and Energy

Synthesis of Core-Shell Al/tiO2 Nanotube Composites by Electrochemical Methods

Abirdu Woreka Nemaga; Mathieu Morcrette; Jeremy Mallet; Michael Molinari; Claude Guéry

Journal of The Electrochemical Society,

2020

All electrochemical process for synthesis of Si coating on TiO2 nanotubes as durable negative electrode material for lithium ion batteries

A. W. Nemaga, J. Mallet, J. Michel, C. Guéry, M. Molinari, M. Morcrette

Journal of Power Sources,

2018

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Publications

Tailored Synthesis of Conformal Si‐Al Coatings on TiO2 Nanotubes for Hybrid Negative Electrodes of Lithium‐Ion Batteries

Synthesis of Core-Shell Al/tiO2 Nanotube Composites by Electrochemical Methods