Fluid-fluid interfaces are responsible for many exciting and important chemical reactions and transformations in various systems and applications. By tuning the properties of these interfaces, the long-term stability of the system can be controlled and defined, and its activity changed. Recently, our group has exploited the assembly of 2D nanosheets at the fluid-fluid interface in Pickering-type emulsions to access novel hybrid architectures. For example, graphene oxide (GO) nanosheets were modified with primary amines at different alkyl chain lengths and shown to serve as surfactants to stabilize oil-in-oil emulsions; the length of the alkyl chains was used to control the identity of the continuous and dispersed phases. In this presentation, we will report the use of a Pickering-type emulsion using GO nanosheets as surfactant to template capsules containing an inner phase of ionic liquid. Interfacial polymerization provides robust capsules that were used as the active material in electrochemical double layer capacitor (EDLC) electrodes. The chemical composition, thermal properties, morphology, and electrochemical behavior of the materials will be reported. This approach represents a distinct approach to preparing intimately hybridized materials, specifically ionic liquid, polymer, and carbon nanomaterials.

Using polymers and 2D materials to encapsulate ionic liquids for enhanced performance of electrochemical double layer capacitors

256th National Meeting (2018)

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