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Microfibrillated cellulose as reinforcement for Li-ion battery polymer electrolytes with excellent mechanical stability |
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| Authors: | A. Chiappone Jijeesh R. NairC. Gerbaldi L. JabbourR. Bongiovanni E. ZenoD. Beneventi N. Penazzi |
| Affiliation: | a Department of Materials Science and Chemical Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy b Center for Space Human Robotics @Polito, Italian Institute of Technology, Corso Trento 21, 10129 Turin, Italy c UMR 5518 CNRS-Grenoble-INP, Domaine Universitaire, 461 rue de la Papeterie, BP 65, 38402 St. Martin d’Hères, France d Centre Technique du Papier (CTP), Domaine Universitaire, B.P. 251, 38044 Grenoble Cedex 9, France |
| Abstract: | Methacrylic-based thermo-set gel-polymer electrolyte membranes obtained by a very easy, fast and reliable free radical photo-polymerisation process and reinforced with microfibrillated cellulose particles are here presented. The morphology of the composite electrolytes is investigated by scanning electron microscopy and their thermal behaviour (characteristic temperatures, degradation temperature) are investigated by thermo-gravimetric analysis and differential scanning calorimetry. The composite membranes prepared exhibit excellent mechanical properties, with a Young's modulus as high as about 80 MPa at ambient temperature. High ionic conductivity (approaching 10−3 S cm−1 at 25 °C) and good overall electrochemical performances are maintained, enlightening that such specific approach would make these hybrid organic, cellulose-based composite polymer electrolyte systems a strong contender in the field of thin and flexible lithium based power sources. |
| Keywords: | Composite polymer electrolyte Methacrylate Photo polymerisation Cellulose Lithium battery Mechanical property |
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