Hydrothermally fabricated perovskite-type composite (NiMnO3/PANI), an effective electrocatalyst for hydrogen evolution reaction (HER)

Currently, water splitting is the most widely used and desirable ecologically friendly energy source. The development of a long-lasting, improved performance, and efficient electroactive catalyst to boost water-splitting efficiency is now major initiative. To increase effectiveness of water splitting, hydrothermal method was utilized to generate NiMnO₃/PANI, a cost-effective and naturally approachable composite material. Numerous analytical methodologies, including Scanning electron microscopy (SEM), Brunauer Emmett Teller (BET) and X-ray diffraction (XRD) were involved to examine morphology, surface area and structure characteristics. NiMnO₃/PANI nanocomposite electrochemical properties were also determined employing a 3-electrode setup in 1.0 M alkaline media (KOH), which shows very minimal overpotential (η) −188 mV at 10 mA/cm² current density (j). Because of its significant ECSA of 625 cm² and enhanced endurance for 50 h, nanocomposite content performs well in HER evaluations. A deeper examination indicated significantly lower Tafel value (65 mV/dec), suggesting that NiMnO₃/PANI nanocomposite exhibited quicker reaction kinetics and greater electrocatalytic efficiency. The previously mentioned nanohybrid NiMnO₃/PANI has a large surface area, which makes it highly promising for electrochemical processes such as water electrolysis. Thus, the resulting nanocomposite seems to be a great electroactive catalyst for energy conversion and HER applications.