Transition metal oxides can be performant electrode materials for supercapacitors and alcohol oxidation if their conductivity and capacity are improved. Herein, an advanced nanocomposite material made of NiO‐Co₃O₄ on reduced graphene oxide (rGO) is synthesized by a one‐step hydrothermal method for supercapacitors and methanol/ethanol oxidation. It is demonstrated that the nanocomposite is a promising material for energy storage as NiO‐Co₃O₄‐rGO supercapacitor electrodes achieve a specific capacity of 149 mAh g⁻¹ (894 F g⁻¹) at a current density of 0.5 A g⁻¹, the discharge time of 689 s, and excellent stability of 95% after 6000 cycles. Moreover, NiO‐Co₃O₄‐rGO shows a current density of 15 and 10 mA cm⁻² in methanol and ethanol oxidation reactions, respectively, along with excellent stability.

The development of active and stable catalysts is essential for the commercialization of direct alcohol fuel cells. In this work, we introduce a MoS₂/Ni₃S₂/rGO catalyst as a cost-effective, stable, and high-performance catalyst for application in alcohol fuel cells. MoS₂/Ni₃S₂ and its hybrid with reduced graphene oxide (rGO) are synthesized and evaluated as nanocatalysts in the alcohol (methanol and ethanol) electro-oxidation process in alkaline media. The effects of temperature and scanning rate are investigated. Voltammetry results show that MoS₂/Ni₃S₂/rGO has good catalytic efficiency and excellent stability of 106 and 104% after 200 consecutive CV cycles for MOR and EOR, respectively. The synergic effect of starfish Ni₃S₂ and the coated porous MoS₂ facilitates the absorption of hydroxyl ions and alcohols on the surface of the catalyst, while rGO enlarges the specific surface area and the electrical conductivity of the electrocatalyst.