TY - JOUR AU - Xie, Lin AU - Kirk, Donald PY - 2021 DA - 2021/09/16 TI - Stability of a Fe-Rich Cathode Catalyst in an Anion Exchange Membrane Fuel Cell JO - Catalysis Research SP - 003 VL - 01 IS - 03 AB - Fe-rich alloys have been widely studied as catalyst materials for the cathodic oxygen reduction reaction (ORR) in hydrogen fuel cells, and many have shown high activities. The stability of Fe-rich catalysts has also been researched, and some studies have shown promising results using an accelerated stress test (AST), which uses a potential cycling method. However, for commercial fuel cell applications, such as standby power systems, the catalyst has to tolerate a high potential for a long period, which can not be represented by the AST test. In this paper, the cathode stability of a Fe-rich catalyst was studied using a standby cell potential of 0.9V, a potential shown to be challenging for the competing Pt catalysts. After 1500 hrs of testing, significant morphology changes of both the tested cathode and anode were found due to a Fe leaching process. Other alloy materials, including Ni, Cr, and Mn, were also found leached out along with the Fe species from the catalyst framework. The results are a cautionary note for using Fe based catalysts for AEMFC cathodes. SN - 2771-490X UR - https://doi.org/10.21926/cr.2103003 DO - 10.21926/cr.2103003 ID - Xie2021 ER -