Formation of unexpectedly active Ni–Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides - Görlin, Mikaela; Chernev, Petko; Paciok, Paul; Tai, Cheuk-Wai; Ferreira de Araújo, Jorge; Reier, Tobias; Heggen, Marc; Dunin-Borkowski, Rafal; Strasser, Peter; Dau, Holger (Chemical Communications, 2019)