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

Options

A. `(Li)/(P_(4))`
B. Di-isobutylaluminium hydride
C. `SiH_(4)`
D. `NaNi_5`

Answer

To determine which compounds can enhance the efficiency of hydrogen storage tanks, we need to consider the properties and mechanisms by which hydrogen can be stored and released. Hydrogen storage methods include physical storage (compressed gas, liquid hydrogen) and chemical storage (metal hydrides, chemical hydrides, etc.).

### Step-by-Step Solution:

1. **Understanding Hydrogen Storage**:
- Hydrogen can be stored in various forms, including compressed gas, liquid hydrogen, and in chemical compounds (like metal hydrides).
- The efficiency of a hydrogen storage tank can be improved by using materials that can absorb and release hydrogen easily.

2. **Identifying Suitable Compounds**:
- Look for compounds that can form stable hydrides or have high hydrogen absorption capacities.
- Common compounds that enhance hydrogen storage include metal hydrides (like MgH2, LaNi5H6) and chemical hydrides (like ammonia borane).

3. **Evaluating the Compounds**:
- If the question provides a list of compounds, analyze each one based on their hydrogen storage capabilities.
- For example, metal hydrides can absorb hydrogen at lower pressures and release it upon heating, making them efficient for storage.

4. **Selecting the Best Option**:
- Choose the compound that has the highest hydrogen capacity and favorable thermodynamics for absorption and desorption.
- If the question provides specific compounds, compare their hydrogen storage properties based on literature or known data.

5. **Conclusion**:
- The compound that has been identified as enhancing the efficiency of hydrogen storage tanks will be the answer.