Graphene and Graphene-Like Materials for Hydrogen Energy

Abstract

The review is devoted to current and promising areas of application of graphene and materials based on it for generating environmentally friendly hydrogen energy. Analysis of the results of theoretical and experimental studies of hydrogen accumulation in graphene materials confirms the possibility of creating on their basis systems for reversible hydrogen storage, which combine high capacity, stability, and the possibility of rapid hydrogen evolution under conditions acceptable for practical use. Recent advances in the development of chemically and heat-resistant graphene-based membrane materials make it possible to create new gas separation membranes that provide high permeability and selectivity and are promising for hydrogen purification in processes of its production from natural gas. The characteristics of polymer membranes that are currently used in industry for the most part can be significantly improved with small additions of graphene materials. The use of graphene-like materials as a support of nanoparticles or as functional additives in the composition of the electrocatalytic layer in polymer electrolyte membrane fuel cells makes it possible to improve their characteristics and to increase the activity and stability of the electrocatalyst in the reaction of oxygen evolution.

Reduced Graphene Oxide-Supported Pt-Based Catalysts for PEM Fuel Cells with Enhanced Activity and Stability

“…Their layered structure may enhance the catalyst layer mass transfer [27]. On the other hand, layered graphene-based materials are prone to restack because of Van-der-Waals interactions and the tendency of nanosheets to agglomerate in aqueous solutions [28,29], which may be suppressed.…”

Graphene/Graphene Derivatives from Coal, Biomass, and Wastes: Synthesis, Energy Applications, and Perspectives

“…In this review, the uses of different graphene derivatives are studied in depth with the main emphasis on their up-to-date energy applications. As graphene possess a greater role as an electrode material in energy storage devices, with these LCP-based graphene derivatives the growing demand for the low-cost, scalable high-quality graphene for energy storage could be achieved. − In this section, the different energy-related applications of these graphene derivatives are extensively discussed with their potentiality as an alternative carbon material in the energy storage sector.…”

The binding of atomic hydrogen on graphene from density functional theory and diffusion Monte Carlo calculations

“…To bring these applications to fruition, a deeper understanding of the interaction of atoms and molecules with graphene is required, and, not surprisingly, this has been the subject of several experimental and theoretical studies. [1][2][3][4][5][6][7][8][9][10][11][12][13] The adsorption of H atoms on graphene has been the subject of multiple studies. 3,[10][11][12][13][14] It is known that there is both a weakly absorbed state in which barriers for diffusion are small and a much more strongly bound chemisorbed state.…”

“…20 Finally, interest in the hydrogen/graphene system has also been motivated by the potential use of graphene and graphitic surfaces for hydrogen storage. 9 The majority of computational studies of adsorption of atoms and molecules on graphene have employed density functional theory (DFT), primarily due to its favorable scaling with system size, allowing for the treatment of larger periodic structures. However, a reliable theoretical description of interactions at the graphene surface has proven to be challenging for DFT.…”