Development of amidoboranes for hydrogen storage

Abstract

With high hydrogen content and moderate dehydrogenation conditions, metal amidoboranes have been regarded as potential hydrogen storage candidates and have attracted increasing attention recently. In this review we provide a practical introduction to the recent progress on the syntheses, crystal structures and dehydrogenation properties of metal amidoboranes and their derivatives.

Application of Ionic Liquids in Hydrogen Storage Systems

“…(Bowden et al, 2008;Mal et al, 2011) On the frontier between molecular and metal hydride storage materials are the metal amido borane compounds, which are not in the scope of this chapter. (Chua et al, 2011) A derivative of AB with a comparable weight efficiency has been studied by Lentz and coworkers recently: hydrazine borane (HB). (Hugle et al, 2009) Much of the hydrogen content of pure HB is thermally available, but the efficiency of release could be significantly improved by combining HB with the hydride-donor LiH: Though blending with LiH in 1:1 molar ratio lowers the theoretical gravimetric hydrogen density from 15.4 wt% to 14.8 wt% the actual release of hydrogen reached nearly 12 wt% at 150 °C in 4.5 h. The idea of combining HB with a hydride-donor arose from the fact that HB has an excess acidic hydrogen atom, since it consists of four acidic but only 3 hydridic hydrogen atoms.…”

Graphene oxide and lithium amidoborane: a new way to bridge chemical and physical approaches for hydrogen storage

“…Note that the metal amidoboranes (MAB), replacing one H atom in AB with an alkali or alkali earth element, have attracted substantial attention due to their high hydrogen capacity as well as mild dehydrogenation conditions. [50][51][52][53][54] Moreover, as predicted by Wang et al, 12 the oxygencontaining groups can favorably bind metal atoms, therefore the dehydrogenation process of MAB may lead to a uniform distribution of metal atoms on the GO surface.…”

Improved Dehydrogenation Properties of 2LiNH2-MgH2 by Doping with Li3AlH6

“…Several types of such materials mainly include microporous media that can physically adsorb hydrogen molecules at low temperatures [3], intermetallic hydrides that absorb atomic hydrogen as an interstitial, and complex hydrides that chemically absorb/desorb hydrogen [4,5]. Owing to the high hydrogen content, lightweight complex hydrides mostly containing Li, B, Na, Mg, and Al, such as alanates [ 4 ] − , are considered to be particularly promising as hydrogen storage materials [6][7][8][9][10][11][12][13][14][15][16][17]. The extensive studies of metal-N-H systems in recent years were initially prompted by Chen and coworkers, who reported the absorption and desorption of hydrogen gas by lithium nitride (Li 3 N) at high temperatures (195-255 • C) [18] according to Equation (1).…”