(128d) Synergistic Effect of Mxene and Copolymeric Binders for Advanced Silicon Anodes in Lithium-Ion Batteries

After the discovery of Mxene, MXene-polymer-based composites have garnered significant attention as electrode materials for supercapacitors and batteries due to their exceptional mechanical and electrical performance. Recent research studies have shown that incorporating MXene into polyacrylate emulsion clays enhances the electrochemical performance of both supercapacitor and high-capacity anodes. However, challenge such as achieving well dispersion of MXene within polymer matrix is crucial for optimizing conductivity and mechanical stability.

In this study, MXene nanosheets are surface-functionalized with coupling agents like trimethylethoxysilane (VTEO) to V-MXene, followed by free-radical aqueous polymerization to synthesis the V-Mxene modified copolymeric binder. The high-capacity silicon anode with a V-MXene incorporating copolymeric binder are systemically examined at the slurry level for rheology and dispersion stability, at the electrode sheet level for adhesive properties and sheet resistance, and at the coin cell level for various electrochemical performance metric. The result shows significant durability improvement compared to pristine MXene in the copolymeric binder.