Journal Article water oxidation (near-)neutral oxygen evolution reaction Review active catalytic structures alkaline oxygen evolution reaction catalytic mechanism cobalt borophosphate precatalysts cobalt oxyhydoxides edge sites electrocatalytic water oxidation helical manganese borophosphates heterostructures hydrogen storage intermetallics intermetallic compounds iron oxygen evolution reaction phase reconstruction precatalyst reconstructions precatalysts proton transport rare-earth metals s-, p-, and f-block selective oxygenation selective oxygenation of organics silicon transition metals water splitting