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.