Li-Al-H system

As described in Sections 7.1 and 7.2 the value of the reaction enthalpy in the Na-Al-H system is still too high for use in combination with low-temperature fuel cells. In contrast, the value ofthe reaction enthalpy in the Li-Al-H system is too low to reach complete reversibility under moderate conditions. To increase the storage capacity and tailor the reaction enthalpy of alanates it is, therefore, a reasonable approach to replace some of the Na in the N a-Al-H system by Li, and, thereby, try to achieve a higher storage capacity in combination with a reduced value of reaction enthalpy Ari-f. ... 

Huot et al. [56] demonstrated the feasibility ofthe formation of Na2LiAlH6 without a solvent by ball-milling. As proven by XRD, hydrogen sorption in the Na-Li-Al-H system is reversible according to ... 

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