Oxygen-Evolution Activity of p–n Heterojunction NiO–SnO2 Ceramic on Ti Substrate Fabricated Using a Simple Layer-by-Layer Method

To expand the application of p–n heterojunction NiO–SnO2 ceramic materials from gas sensors and photoelectrocatalysts to oxygen-evolution reaction (OER) catalysts, we fabricated two NiO–SnO2 cerami...