3D, Self-Assembled, Membrane-Electrode Assemblies for Advanced Electrochemical Devices

摘要

I am interested in self-assembled anion exchange membranes, meso-structured electrodes, and alkaline electrocatalysis for electrochemical devices (e.g., fuel cells and batteries). In general, the area-specific resistance, reactant crossover, and cell performance are closely related to ion transport across the membrane/catalyst layer interface and within the membrane electrode assembly. Understanding electrocatalysis and transport within structured membrane/electrode assemblies and controlling that transport is the key to realizing high-current-density devices. The research questions I explore will enable rationally designed architectures in membranes, electrodes, and their interfaces. Science teaches us that nature uses hierarchical approaches to overcome the challenge of assembly across many length-scales. Such a foundational approach underpins the primary methods I use in my research, which include: self-assembly of phase-segregated block copolymer membranes; layer-by-layer assembly of blended membrane/electrode interfaces; and chemical-vapor impregnation of catalysts onto fully formed electrode supports. This research is well-funded by the NSF CBET division and the DOE BES program and will result in an outstanding record of publications, educate many PhD students, and advance the reputation of my future department.