Discussion About Carbon-Based Solid-State Hydrogen Storage Materials

Abstract

Activated carbon, as one type of hydrogen storage material have long been attracted by a measure of researchers. Some of the activated carbon’s properties may fall short compared with other materials; their characteristics like high surface area, easy-to-prepare, pretty small diameters, however, keep their status as one of the best choices for hydrogen storage. Carbon nanotube is considered as a promising candidate for solid-state hydrogen storage, and there is quite much research have been conducted to synthesize low-cost carbon nanotube with low absorption temperatures, high gravimetric and volumetric hydrogen storage densities, flexibility, good resistance to oxidation, high hardness, good reversibility and cyclic ability and moderate thermodynamic stability. Carbon fiber has shown its unique advantages among many other solid-state hydrogen storage materials. Carbon fiber might be the best for hydrogen storage since its low gas-solid interaction, tunable texture, surface area, high pore volume and excellent chemical and thermal stability. Additionally, the carbon fiber could also control its pore size for better absorption of a great number of hydrogen molecules. Based on several indexes, this literature introduce above three types of solid-state hydrogen materials, which hopefully are able to be favorable to further researches on relevant fields.