Question

Which of the given compounds can enhance the efficiency of hydrogen storage tank?

• A. \(Li/P_4\)
• B. \(NaNi_5\)
• C. \(SiH_4\)
• D. Di-isobutylaluminium hydride

Hint:

For hydrogen storage materials:
• Look for compounds or alloys that form stable hydrides with high absorption capacities.
• Ensure reversibility of hydrogen absorption and release for practical applications.

Answer 1

The Correct Option is B

The question asks which compound can enhance the efficiency of a hydrogen storage tank. Let's analyze the options:

1. \(Li/P_4\): Lithium (Li) is known for its utility in battery technology, but not particularly noted for enhancing hydrogen storage efficiency. P₄ (phosphorus) does not have a specific role in hydrogen storage improvements.
2. \(NaNi_5\): Sodium nickel (NaNi₅) is a well-known hydrogen storage alloy. It has a high capacity for absorbing and desorbing hydrogen efficiently, which makes it a popular choice in hydrogen storage technologies. This compound enhances the kinetic properties of hydrogen absorption and desorption, thus increasing the efficiency of hydrogen storage systems.
3. \(SiH_4\): Silane (SiH₄) is a compound containing hydrogen, but it is not used for enhancing hydrogen storage efficiency. Instead, it is primarily used in the semiconductor industry.
4. Di-isobutylaluminium hydride: This compound is primarily used as a reducing agent in organic synthesis and does not contribute to hydrogen storage technologies.

Given the analysis, NaNi_5 is the correct choice as it is instrumental in enhancing hydrogen storage efficiency through its favorable absorption and desorption characteristics.