Studying aluminum hydride by means of thermal analysis

Hydrogen generation from aluminum hydride for wearable polymer electrolyte membrane fuel cells

“…During the rise to 250 C, the sample loses weight but then stabilizes once the temperature is constant and begins to increase weight to the original plateau. This weight change corresponds to less than 1% and may be accounted for by adsorbed N 2 [15]. Surprisingly at the higher temperature, no further weight loss is observed that corresponds to the remaining 6% H 2 available.…”

“…Similar to the previous cartridge chamber design, there is minimal headspace in the sealed cartridge chamber, and it is assumed that the weight gain from oxide formation [14,15] is negligible. The mass of AlH 3 (m AlH 3 ) in the cartridge is measured during cartridge loading.…”

“…Fig. 3a also shows that there is a small weight gain (<1%) in the decay period, which Milekhin et al [15] attribute to N 2 adsorption in the porous structure of the final material. This weight gain may also result from Al oxidation from trace O 2 amounts, however further elemental analysis of the starting and final materials is necessary to confirm.…”

Preparation and Properties of Pyrotechnic Binder Encapsulated α‐AlH3 Composites by Solvent/Anti‐solvent Method

“…Further heating of the α‐AlH 3 resulted in a second endotherm at 663.6 °C corresponding to the melting temperature of porous reactive aluminum. Correspondingly, the TG curves began to rise significantly with an increase of 7.22% in mass, on the one hand, due to the adsorption of N 2 in the pores of the porous reactive aluminum, and on the other hand the reaction of porous reactive aluminum and N 2 : 2Al+N 2 =2AlN [39] . In addition, the heat absorption peak at 769.6 °C corresponds to the formation of a large amount of AlN.…”

“…Correspondingly, the TG curves began to rise significantly with an increase of 7.22% in mass, on the one hand, due to the adsorption of N 2 in the pores of the porous reactive aluminum, and on the other hand the reaction of porous reactive aluminum and N 2 : 2Al + N 2 = 2AlN. [39] In addition, the heat absorption peak at 769.6 °C corresponds to the formation of a large amount of AlN. Eventually, upon heating to 1200 °C, the mass of α-AlH 3 increases to 153.12%.…”