Here, pristine and Sn-hematite electrodes were obtained with two different morphologies (columnar, CN, and ellipsoid (EN) nanostructure) by low-cost aqueous chemical method. The following step was the addition at the Sn-hematite surface of a spinel cocatalyst that was also synthesized via chemical method. Sn-hematite-cocatalyst (Ni₂FeOx) electrodes were submitted to additional thermal treatment under nitrogen atmosphere to activate the material surface. The pristine hematite electrode showed considerable enhancement on photocurrent density J, in comparison with previous work in our group for both method from a range of ~ 30 µA.cm^-2up to 0.2 mA.cm^-2 and 1.0 mA.cm^-2to 2.0 mA.cm^-2at 1.23 VRHE, for CN and EN photoelectrodes respectively. Such improvement has been mainly attributed to a better uniformity of the films and an improved interfacial adherence of the hematite thin film to the TCO provoked primarily by the deposition layer control. Likewise, the addition of Sn⁺⁴during hematite photoelectrode prepared enhance the photocurrent response with a pronounced alteration on the onset of the photocurrent curve, moving towards anodic direction from ~0.8 VRHE for pristine photoelectrode to ~0.95 VRHE for Sn-hematite photoelectrode. The final step was the addition of a cocatalyst, such as Ni₂FeO_X, over the Sn-hematite that leads to a significant shift on the onset potential toward the cathodic direction without drop photocurrent performance as usually observed. In summary, the synergy of Sn⁺⁴and Ni₂FeO_Xaddition enables us to promote a shift on the onset towards a lower potential and enhancing the photocurrent density. The authors gratefully acknowledge support from FAPESP (Grant 2017/11986-5) and Shell and the strategic importance of the support given by ANP (Brazil’s National Oil, Natural Gas and Biofuels Agency) through the R&D levy regulation