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?
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?
Answer:
(c)
Moderate
Core Books
Core Books/NCERT
To determine how many of the listed elements usually make up battery cathodes in electric vehicle (EV) batteries, let’s break down the role of each: I. Cobalt Used in cathodes Common in lithium-ion batteries (especially in NMC: Nickel-Manganese-Cobalt and NCA: Nickel-Cobalt-Aluminum chemistries). II. Graphite ❌ Not used in cathodes Graphite is primarily used in anodes, not cathodes. III. Lithium Used in cathodes Lithium is a fundamental part of lithium-ion batteries, commonly present in the cathode material (e.g., lithium cobalt oxide, lithium iron phosphate). IV. Nickel Used in cathodes Nickel is used to improve energy density in cathodes, such as in NMC and NCA types. Final Assessment: Cobalt – Cathode ✔ Graphite – Anode ✘ Lithium – Cathode ✔ Nickel – Cathode ✔ Correct count of elements used in cathodes: 3