Scalable Route to Electroactive and Light Active Perylene Diimide Dye Polymer Binder for Lithium-Ion Batteries
P.G. Ranque (TU Delft - OLD ChemE/Organic Materials and Interfaces, Université de Pau et des Pays de l'Adour)
C. George (Imperial College London, TU Delft - RST/Storage of Electrochemical Energy)
Rajeev Dubey (TU Delft - ChemE/Opto-electronic Materials)
R. Van Der Jagt (TU Delft - RST/Storage of Electrochemical Energy)
Delphine Flahaut (Université de Pau et des Pays de l'Adour)
M. Fehse (European Synchrotron Radiation Facility, Dutch-Belgian (DUBBLE), TU Delft - RST/Storage of Electrochemical Energy)
WF Jager (TU Delft - ChemE/Advanced Soft Matter)
Ernst Sudhölter (TU Delft - ChemE/Advanced Soft Matter)
EM Kelder (TU Delft - RST/Storage of Electrochemical Energy)
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Abstract
Developing multifunctional polymeric binders is key to the design of energy storage technologies with value-added features. We report that a multigram-scale synthesis of perylene diimide polymer (PPDI), from a single batch via polymer analogous reaction route, yields high molecular weight polymers with suitable thermal stability and minimized solubility in electrolytes, potentially leading to improved binding affinity toward electrode particles. Further, it develops strategies for designing copolymers with virtually any desired composition via a subsequent grafting, leading to purpose-built binders. PPDI dye as both binder and electroactive additive in lithium half-cells using lithium iron phosphate exhibits good electrochemical performance.
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