Activation energy of hydrogen storage alloys

What is the dehydrogenation activation energy of SC0 alloy?

The dehydrogenation activation energy decreased from 96.56 kJ/mol in the Sc0 alloy to 63.69 kJ/mol in the Sc0.9 alloy. Through analysis of the microstructure, phase composition, and hydrogen absorption and desorption kinetics of the alloy, the mechanisms for improving the hydrogen storage properties of the alloy were elucidated.

Why are Tife alloys a good choice for hydrogen storage?

After being activated, TiFe alloys are widely concerned for their high hydrogen storage density due to their large reversible absorption and desorption capacity of hydrogen at room temperature, low price, abundant resources, moderate hydride decomposition pressure, and good hydrogen absorption and desorption kinetic performance.

How to improve hydrogen storage performance of materials?

Most of the existing studies use methods such as addition or replacement of elements, surface treatment and heat treatment to improve the comprehensive hydrogen storage performance of materials by changing the components of hydrogen sto-rage alloys or improving the microstructure of hydrogen storage alloys.

Can hydrogen storage properties of alloys be enhanced simultaneously?

However, no comprehensive method has been discovered to enhance all the hydrogen storage properties of alloys simultaneously.

How to increase hydrogenation capacity of Mg alloy?

Currently, nanoscaling, alloying, and doping catalysts are the main strategies suggested for increasing the hydrogenation capacity of Mg alloy (Ref 33, 34, 35, 36). Ball milling can reduce particle size, increase activation sites, and introduce flaws.

What are Tife-based hydrogen storage alloys?

TiFe-based hydrogen storage alloys have been widely studied for their application in batteries because of their ability to reversibly absorb and desorb hydrogen in large quantities after activation and their low price.