Sumit Bawari, Nicolas A. Ishiki, Mingjun Gu, Gaëlle Khalil, Marion Giraud, Jennifer Peron, Stephan N. Steinmann. “How do alkali cations affect alkaline HER activity of nickel and platinum?” ChemRxiv (2026). https://doi.org/10.26434/chemrxiv.15007944/v1

Eligible analytical characterization data were not found in the main paper or supporting information. X-ray fluorescence was used to determine electrode metal loading, but the loading values were not reported in the text or tables; the electrochemical results characterize hydrogen-evolution performance and were not retained