Designing highly active electrocatalysts with unique nanostructures is critical to increasing oxygen evolution reaction (OER) electrocatalytic efficiency, but high overpotentials and poor cycle stability remain a challenging issue. Herein, we directly grow a small amount of Co-doped SnS2 nanosheet array on the surface of carbon fiber by a simple one-step solvothermal method and study the effect of different Co/Sn ratio (x = 0, 0.05, 0.15, 0.25) on the morphology of SnS2. The Co-doped SnS2 nanosheet array with x = 0.15 exhibited the most active sites and the most excellent OER performance. It has an overpotential of 281 mV at a current density of 30 mA cm(-2) and a low Tafel slope of 62 mV dec(-1), which is much lower than pure SnS2. Such good performance is attributed to the high intrinsic activity and superaerophobic surface property.