Accelerating the Pace of Oxygen Evolution Reaction Catalyst Discovery through Megalibraries

This material is based on research sponsored by the Toyota Research Institute, Inc., Mattiq, Inc., the U.S. Army DEVCOM ARL Army Research Office (ARO) Energy Sciences Competency (Electrochemistry) Program awards W911NF-23-1-0285 and W911NF-25-2-0018, and the Air Force agreement FA8650-21-2-5028. This project was made possible with the support of Bioindustrial Manufacturing and Design Ecosystem (BioMADE). J.P. gratefully acknowledges support by the National Science Foundation Graduate Research Fellowship Program under grant DGE-2234667. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Army, U.S. Air Force, the National Science Foundation, the U.S. Government, or BioMADE. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. This work made use of the EPIC, Keck-II, and NUFAB facilities of Northwestern University's NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-2025633), the International Institute for Nanotechnology (NIH-S10OD026871), and Northwestern's MRSEC program of the National Science Foundation (NSF DMR-1720139). This work made use of the IMSERC Physical Characterization facility at Northwestern University which has received support from the SHyNE Resource and Northwestern University, the Jerome B. Cohen X-ray Diffraction Facility supported by Northwestern's MRSEC program at the Materials Research Center of Northwestern University, and the SHyNE Resource, and the Northwestern University Quantitative Bioelement Imaging Center supported by the Chicago Biomedical Consortium with support from the Searle Funds at The Chicago Community Trust and supported by the Office Of The Director, National Institutes of Health of the National Institutes of Health (S10OD020118). This manuscript is the result of funding in whole or in part by the National Institutes of Health (NIH). It is subject to the NIH Public Access Policy. Through acceptance of this federal funding, NIH has been given a right to make this manuscript publicly available in PubMed Central upon the Official Date of Publication, as defined by NIH. This research used resources of the Advanced Photon Source (beamline 12-BM), a U.S. DOE Office of Science User Facility, operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. DFT calculations were performed using computational resources and staff support provided by the Quest high-performance computing facility at Northwestern University, jointly supported by the Office of the Provost, the Office of Research, and Northwestern University Information Technology. Dr. Gang Wu thanks the start-up fund from the Washington University in St. Louis. We thank Mattiq Inc. for the preparation of the 3D-printed SDC head. We thank Dr. Jordan H. Swisher for the help on SDC measurement. We thank Dr. Qiang Sun for the suggestions on MEA fabrication and test. We thank Dr. Hongmin An for the help on DEMS test. We thank Dr. Pengfei Ou for help with DFT calculations. We thank Dr. Jiantao Li for his help with XAS measurements and Dr. Qingying Jia for his guidance on the XAS data analysis.