In the context of electric vehicle batteries consider the following elements I Cobalt II Graphite II...........

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In the context of electric vehicle batteries, consider the following elements:

I. Cobalt

II. Graphite

III. Lithium

IV. Nickel

How many of the above usually make up battery cathodes?

This questions was previously asked in

UPSC CSE 2025 (General Studies-1)

Only one

Only two

Only three

All the four

- Cobalt (I): It is commonly used in the cathode part of lithium-ion batteries. It helps improve energy density and battery life.

- Graphite (II): It is not used in cathodes; it is typically used as the anode material in lithium-ion batteries.

- Lithium (III): A crucial component of the cathode in lithium-ion batteries. It helps to store and release energy.

- Nickel (IV): It is used to enhance the energy capacity and stability of the cathode material.

Option 3 is correct as only three elements (Cobalt, Lithium, and Nickel) are used in the cathode. Therefore:

Correct Answer: Option 3 - Only three

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