Self-supported ultra-active NiO-based electrocatalysts for the oxygen evolution reaction by solution combustion - Bucci, A; Garcia-Tecedor, M; Corby, S; Rao, RR; Martin-Diaconescu, V; Oropeza, FE; de, la Pena O'Shea VA; Durrant, JR; Gimenez, S; Lloret-Fillol, J (JOURNAL OF MATERIALS CHEMISTRY A, 2021)