Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.172
Publication date: 11th July 2022
Interfaces play an essential role in nearly all aspects of life and are critical for electrochemistry. Electrochemical systems ranging from high-temperature solid oxide fuel cells (SOFC) to batteries to capacitors have a wide range of important interfaces between solids, liquids, and gases which play a pivotal role in how energy is stored, transferred, and converted. This talk will focus on using ambient pressure XPS (APXPS) to directly probe the solid/liquid electrochemical interface of ion exchange membranes and composite water electrolysis electrodes. APXPS is a photon-in/electron-out process that can provide both atomic concentrations, chemical-specific, and local electric potential information at pressures greater than 20 Torr. Using synchrotron X-rays at Lawrence Berkeley Nation Laboratory, the Advanced Light Source has several beamlines dedicated to APXPS endstations to probe a wide range of interfaces ranging from solid/gas to solid/liquid and liquid/liquid. To enable our approach to investigating electrochemical solid/liquid interfaces, we leverage tender x-rays to support investigations at pressures greater than 20 Torr. Electrical leads support applying electrical potentials to enable the ability to collect XPS data of actual electrochemical devices while operating near ambient pressures. This talk will introduce APXPS and share how we can use this technique to directly probe the Donnan potential of an ion exchange membrane at the solid/liquid interface for the first time. In addition, I will share the chemical information we can reveal when probing a composite water electrolysis electrode undergoing electrochemical water splitting, gaining new insight to guide the design and control of future electrochemical interfaces.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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