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This preparation does not require energy\u2010intensive materials preparation steps or noble metals, yet a low overpotential of 322\u2005mV at 10.2\u2005mA\u2009cm<jats:sup>\u22122<\/jats:sup> and a high current density of more than 300\u2005mA\u2009cm<jats:sup>\u22122<\/jats:sup> at 1.7\u2005V<jats:sub>NHE<\/jats:sub> were obtained in 1\u2009<jats:sc>m<\/jats:sc> KOH. An operando electrochemical Raman spectroscopy study confirmed the formation of cobalt oxyhydroxide species and the iron stimulated the equilibrium state between Co<jats:sup>3+<\/jats:sup> and Co<jats:sup>4+<\/jats:sup>. The iron present in the alkali electrolyte or ink solution effectively activated the cobalt species, and most of the first row transition metals could also enhance the catalytic performance. The concept presented here is one of the simplest strategies for preparing highly active electrocatalysts and is very flexible for the replacement of cobalt by other transition metals.<\/jats:p>","DOI":"10.1002\/anie.201813052","type":"journal-article","created":{"date-parts":[[2019,1,21]],"date-time":"2019-01-21T15:23:20Z","timestamp":1548084200000},"page":"3491-3495","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":81,"title":["Highly Active Cobalt\u2010Based Electrocatalysts with Facile Incorporation of Dopants for the Oxygen Evolution Reaction"],"prefix":"10.1002","volume":"58","author":[{"given":"Gun\u2010hee","family":"Moon","sequence":"first","affiliation":[{"name":"Department of Heterogeneous Catalysis Max-Planck-Institut f\u00fcr Kohlenforschung  Kaiser-Wilhelm-Platz 1 45470 M\u00fclheim an der Ruhr Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingquan","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Heterogeneous Catalysis Max-Planck-Institut f\u00fcr Kohlenforschung  Kaiser-Wilhelm-Platz 1 45470 M\u00fclheim an der Ruhr Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Candace K.","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Heterogeneous Catalysis Max-Planck-Institut f\u00fcr Kohlenforschung  Kaiser-Wilhelm-Platz 1 45470 M\u00fclheim an der Ruhr Germany"},{"name":"Materials Science and Engineering School for Engineering of Matter, Transport and Energy Arizona State University  P.O. 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