Abstract
In recent years, water-based binders have been attracted for electrochemical double-layer capacitor (EDLC) due to their eco-friendly and easy manufacture processing, such as: carboxymethyl cellulose (CMC), Styrene Butadiene Rubber (SBR), poly tetrafluoroethylene (PTFE), etc. Particularly, the combination of CMC and SBR shows better performance than polyvinylidene fluoride (PVdF) which is dissolved in a harmful organic solvent, N-methyl-2-pyrollidone (NMP). Good ionic/electronic conduction of binder can greatly improve the performance of electrode, even though the key factor of binder materials is electrode adhesion. Recently, a new type of two-dimensional material composed of transition metal carbides or nitrides was developed, which is highly electronically conductive. In our research, we synthesized a high adhesive poly(acrylonitrile-co-butylacrylate) on the surface of the two-dimensional conductive materials by emulsion polymerization. This novel conductive water-based binder was applied to EDLC and have a remarkable effect on the electrochemical performance. A variety of characteritics demonstrate that the polymer binder containing 2-dimentional conducting materials can be a good candidate binder for EDLCs, probably lithium ion batteries.
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