Our group has demonstrated the use of a supramolecular, self-healing polymer (SHP) to enable high capacity anode materials for lithium ion batteries (LIBs). While promising, the SHP used in these prior studies was not specifically designed for batteries. Here we present the synthesis and characterization of new supramolecular self-healing polymers with different backbone structures designed for improved performance in LIBs. Synthesized by simple condensation reactions, the branched polymers associate via urea and amide hydrogen bonding groups to form a supramolecular network. This work characterizes the Li-ion conduction, adhesive properties, and self-healing capability of the polymers. We will also discuss the effects of backbone chemistry on their performance in LIBs. By controlling the mechanical properties and electrolyte interaction, we are able to influence the cycling stability of the electrode materials and contribute toward a better understanding of the requirements for polymers in LIBs. This will lead toward the eventual systematic design of LIB binder materials and allow for the realization of high capacity anodes.

Synthesis and characterization of supramolecular self-healing polymers designed for application in lithium-ion batteries

251st National Meeting (2016)

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