Energy Dispersive X-Ray and Electrochemical Impedance Spectroscopies for Performance and Corrosion Analysis of PEMWEs

22nd International Conference on Spectral Line Shapes

Steen, S.M.^1 ; Steen, S.M.^1 ; Zhang, F.-Y.^1

Department of Mechanical, Aerospace and Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, United States^1

关键词: Compact designs;    Corrosion analysis;    Energy dispersive X ray spectroscopy;    Energy dispersive x-ray;    Energy storage technologies;    Oxygen electrode;    Proton exchange membranes;    Renewable energy systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012062/pdf
DOI  :  10.1088/1742-6596/548/1/012062

来源: IOP

【 摘 要 】

Proton exchange membrane water electrolyzers (PEMWEs) are a promising energy storage technology due to their high efficiency, compact design, and ability to be used in a renewable energy system. Before they are able to make a large commercial impact, there are several hurdles facing the technology today. Two powerful techniques for both in-situ and ex- situ characterizations to improve upon their performance and better understand their corrosion are electrochemical impedance spectroscopy and energy dispersive x-ray spectroscopy, respectively. In this paper, the authors use both methods in order to characterize the anode gas diffusion layer (GDL) in a PEMWE cell and better understand the corrosion that occurs in the oxygen electrode during electrolysis.