Hydrogen storage in solids

In practice, two basic bonding mechanisms are considered for hydrogen storage in solid-state materials ... 

The essential requirements for hydrogen storage in solids are that it be (a) high H-mass density (b) high H-volume density (c) appropriate pressure, temperature stability (d) reversible absorption/desorption. The results of research in the field of hydrogen solubility in the metal-hydrogen systems and carbon nanostructures are presented in this paper. 

The HAR was usually studied from permeation experiments using the electrochemical permeation technique. The other way was by charging experiments. With the development of techniques of hydrogen storage in solid materials, there has been a renewal of interest in the H absorption reaction [2-6] and a need to monitor the conditions for obtaining high concentrations of H in the bulk (and establishing relations not restricted to low levels of H concentrations and to low overpotentials). 

So, the question I have is. Do you think the research ideas for hydrogen storage in solids are adequate or should we be putting more resources into this, perhaps approaching hydrogen storage in a significantly different way ... 

It is now appropriate to discuss solid state hydrogen storage in hydrides in the context of the targets shown in Table 1.2. 

The present paper is concerned with hydrogen storage in different crystalline solids. Such solids can be metal hydrides, carbon-based materials, and microporous materials. 

Cheng H, Chen L, Cooper AC, Sha X, Pez GP (2008) Hydrogen spillover in the contest of hydrogen storage using solid-state materials. Energy Environ Sci 1 338-354... 

Hydrogen Storage Materials (Solid) for Fuel Cell Vehicles, Fig. 6 Pressure-composition isotherms for the hydrogen absorption in a typical metal on the left-hand side. The solid solution (a-phase), the hydride phase (P-phase), and the region of the coexistence of the two phases. The coexistence region is characterized by the... 

Adsorption of hydrogen and methane has been widely studied from the viewpoint of storage and separation. It is important to be aware of that the monolayer adsorption mechanism functions in either physical (at above-critical temperatures) or chemical adsorption. Any effort to enhance hydrogen storage using solid material can hardly reach the commercial goal as long as this enhancement is based on adsorption. On the other hand, an efficient adsorbent... 

Titanium nitride-based nanoparticles are also efficient dopants for NaAlH4 in hydrogen storage applications [12, 13]. The black solid TiN powder can be dispersed into the hydride via ball milling. Addition of titanium nitride-based na-... 

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