Preparation of Porous Expanded Graphite for High-Performance Hydrogen Storage via Peroxide Treatment
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초록
내용
Three factors are considered important for the realization of hydrogen energy commercialization. Hydrogen production, hydrogen transport, and storage are among the biggest obstacles to hydrogen storage. Physisorption has become a promising candidate for storing hydrogen because of its excellent reversibility, fast kinetics, low energy consumption, and low cost. To achieve DOE goals, many porous materials such as zeolites, MOFs, COFs, activated carbons, CNTs, graphene derivates, and graphite have been studied for physisorption storage. Among them, carbon materials have many advantages, such as low cost, high specific surface area, low mass density, and chemical stability. This study reports the hydrogen uptake capacity of expanded graphite containing oxygen surface functional groups prepared by chemical method at room temperature. The experiments and results demonstrate a correlation between oxygen functional groups and the hydrogen uptake capacity of expanded graphite.