Due to global warming, eco-friendly energy is attracting attention as a next-generation energy, and a polymer electrolyte membrane fuel cell (PEMFC) using clean fuel hydrogen as a fuel is emerging as a next-generation energy conversion system. PEMFC has a wide range of applications due to its high power density and operating at low temperatures, however due to the low operating temperature, the activation energy for the fuel cell reaction is so high as a result commercialization is delayed. To solve this problem, many researchers are studying catalysts with hydrogen oxidation reaction (HOR) activity comparable to platinum catalysts, but it still remains a challenge work. Therefore, in this study, we develop a platinum-based catalyst with gas selectivity and high HOR activity through carbon shell coating. Furthermore, the physical and electrochemical properties of the catalyst are thoroughly investigated to understand the reaction mechanism of the developed catalyst surface.