catalysts for catalytic oxidation of hydrogen are considered, with an emphasis on good strategies to enhance the entire performance of the catalysts. Indeed, it is described that the Ni surface state (reduced or oxidized) widely governs its electrocatalytic activity, and this state of the surface delivers a crucial meaning regarding the catalytic activity of Ni-based catalysts for the oxidation of complex fuels such as borohydride, boranes, and hydrazine. In addition, some attention is made to the durability of Ni-based catalysts in alkaline media, and it is suggested that catalyst durability of Ni-based electrodes might be high, but does not essentially permit the stable catalytic activity, due to the possible catalyst deactivation resulting in bulk hydride or surface oxide formation under the operation process. Electrodes that contain a series of NiOOH surfaces are used as Ni-based catalysts for either organic compound (especially methanol) oxidation or oxygen evolution reaction under alkaline conditions as depicted in Chen, D et al's paper . According to these interpretations: i) the rate-determining step of methanol oxidation includes NiOOH, ii) OH -, iii) high methanol to OH -ratio might poison the NiOOH sites, and iv) high overpotential, it was established that Ni-based catalysts are more appropriate as an OER catalyst rather than methanol oxidation reaction (MOR) catalyst in the existence of an equal amount (0.1 M) of alkali and methanol.