Authors: J.P. Katsoudas, E.V. Timofeeva, C.U. Segre
Affilation: Illinois Institute of Technology Material Collaborative Access Team, United States
Pages: 13 - 15
Keywords: EXAFS, XANES, XAS, electrochemical cells, battery, in-situ experiments
The high demand for better performing battery electrodes and fuel cell catalysts has pushed the direction of experimental design for in situ electrochemical (EC) cells towards non invasive experimental techniques such as x-ray absorption spectroscopy (XAS) that can provide information on electronic and structural information. XAS techniques allow in-situ measurements on non-crystalline samples, making XAS a valuable resource for nanomaterials research. As the user community gains the appreciation of benefits of in-situ XAS techniques and more scientist desiring in-situ battery experiments, a deficiency in overall experimental designs have emerged costing valuable synchrotron experiment time and slowing the turn-around time of insightful and useful results. While any particular element of the EC part might be well understood, the success of in-situ XAS experiments are determined by the overall design of the experiment and is often relies on close collaboration of electrochemists with the synchrotron community. This presentation resulted from multiple collaborations on in-situ XAS experiments and aims to summarize critical design issues in such experiments.