Question

Which one of the following is the most efficient in energy storage as a rechargeable battery?

• A. Lead Acid
• B. Nickel – Cadmium
• C. Zinc – Air
• D. Lithium – Ion

Hint:

Lithium-Ion batteries offer the highest energy density, faster charging, and longer cycle life, making them ideal for modern energy storage.

Answer 1

The Correct Option is D

Step 1: Comparing Battery Efficiencies
Rechargeable battery efficiency is measured by energy density, cycle life, and charge efficiency.
Step 2: Evaluating Each Option
- Lead Acid: Low energy density and short lifespan. Used in automotive applications. - Nickel-Cadmium: Better than lead-acid but suffers from memory effect, reducing efficiency over time. - Zinc-Air: High energy density but mainly used in non-rechargeable applications. - Lithium-Ion: Highest energy density, long lifespan, and high efficiency.
Step 3: Conclusion
Lithium-Ion batteries are the most efficient, making them the best choice for energy storage.