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Creators/Authors contains: "Speelman, R"

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  1. ; ; ; ; ; ; ; ; ; (, Nature Communications)
    Free, publicly-accessible full text available December 1, 2026
  2. ; ; (, Science advances)
    While water’s oxygen is the electron source in the industrially important oxygen evolution reaction, the strong absorber problem clouds our view of how the Stern layer water molecules orient themselves in response to applied potentials. Here, we report nonlinear optical measurements on nickel electrodes held at pH 13 indicating a disorder- to- order transition in the Stern layer water molecules before the onset of Faradaic current. A full water monolayer (1.1 × 1015 centimeter−2) aligns with oxygen atoms pointing toward the electrode at +0.8 volt and the associated work is 80 kilojoule per mole. Our experiments identify water flipping energetics as a target for understanding over- potentials, advance molecular electrochemistry, provide benchmarks for electrical double layer models, and serve as a diagnostic tool for understanding electrocatalysis. 
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    Free, publicly-accessible full text available March 5, 2026