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Paper, print media and biomaterials

LGP2, a center of innovative research
LGP2, a center of innovative research

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LGP2 - Elaboration of flexible lithium–ion electrodes by printing process

Published on April 28, 2014
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PhD Defense April 24, 2014

Oussama El Baradai defended his University of Grenoble Ph.D. thesis entitled "Elaboration of flexible lithium–ion electrodes by printing process".

Laboratoire Génie des Procédés Papetiers (LGP2)This thesis was prepared at the LGP2 laboratory under the supervision of Didier Chaussy, Professor, and of Davide Beneventi, CNRS Researcher, and at Laboratory of Electrochemistry and Physical Chemistry of Materials and Interfaces (LEPMI), under the supervision of Yann Bultel, Professor.

The work describes the manufacturing of eco-sustainable lithium-ion electrodes without fluoro-based bindings and organic solvent, thanks to the utilization of celluloses derivatives and a conventional printing process.

The main breakthrough in this work is the formulation of water based inks containing either active and conducting particles of the anode (graphite) or cathode (LFP and carbon black) and a cellulosic based binding. Thus cellulose derivatives have a binding role of active materials by replacing fluoro-based binding commonly used and insure the cohesion of electrodes printed onto paper separator without affecting electronic conductivity. In this work a new assembling strategy was proposed.

In order to validate this new technique, a lithium-ion battery was manufactured by using a front/back printing strategy of separator with the integration of current collectors during printing stage.

Press release
Ph.D. thesis (2014)

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Date of update April 28, 2014

Grenoble INP Institut d'ingénierie Univ. Grenoble Alpes