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                    <sub>3</sub>
                    Co(Co
                    <sub>0.25</sub>
                    Ru
                    <sub>0.75</sub>
                    )
                    <sub>2</sub>
                    O
                    <sub>9</sub>
                    at 1 A cm
                    <sup>−2</sup>
                    for 1000 h. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.5599112