Ketian Zhang


PhD Student

Layer-by-Layer Assembled Polymer Membranes for Integrated Water-Splitting Devices

My project is part of the NSF Center for Chemical Innovation Solar Project, targeting the efficient and economical conversion of solar energy into chemical fuels. I focus on the membrane between the photocathodes and photoanodes. The membrane must fulfill several functions at the same time. It should conduct protons and electrons well, provide structural support for the semiconductor photoelectrodes, minimize the permeation of the hydrogen and oxygen products, while being optically transparent. To achieve these goals, I will be designing functional polymers and assembling them via layer-by-layer processes. I will also study how to integrate the polymer membranes into the water-splitting devices.