Bøger af Sushanta Kumar Das

Metal oxide-graphene nanohybrids have emerged as promising electrocatalysts for various fuel cell applications. These nanohybrids exhibit excellent electrochemical properties due to their unique structural features and enhanced surface area. In recent years, the development of metal oxide-graphene nanohybrids has gained significant attention in the field of energy conversion and storage, particularly for proton exchange membrane fuel cells and direct methanol fuel cells. The oxygen reduction reaction (ORR) is a key reaction in fuel cells, and metal oxide-graphene nanohybrids have shown remarkable ORR activity. These nanohybrids possess high electrocatalytic activity, which can enhance the efficiency of fuel cells. In addition, metal oxide-graphene nanohybrids have shown great potential as anode and cathode catalysts in fuel cells. The use of metal oxide-graphene nanohybrids in fuel cells offers several advantages, including high energy conversion efficiency, sustainability, and reduced environmental impact. Carbon-based materials, such as graphene, are ideal candidates for fuel cell applications due to their excellent electrical conductivity, surface area, and chemical stability. The incorporation of metal oxides into graphene-based nanohybrids can further enhance their electrocatalytic properties. The development of metal oxide-graphene nanohybrids for fuel cell applications involves several challenges, including the selection of appropriate metal oxides, synthesis methods, and optimization of the electrocatalytic activity. The performance and stability of the electrocatalysts are also critical factors for long-term durability of fuel cells. In addition, the ionomer and ion exchange membrane materials used in fuel cells can affect the proton conductivity and electron conductivity, which can impact the overall performance of the fuel cell. Overall, the development of metal oxide-graphene nanohybrids for fuel cell applications has the potential to revolutionize the field of energy conversion and storage. This technology can provide a sustainable and efficient energy source for various applications, including transportation, industrial processes, and residential power generation. Further research is needed to optimize the electrocatalytic activity and durability of these nanohybrids, and to develop scalable and cost-effective synthesis methods for their production.