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Which of the following is formed at the graphite electrode during the charging process of a battery when the lithium-ion move through the separator?

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Which of the following is formed at the graphite electrode during the charging process of a battery when the lithium-ion move through the separator?

(a) Water

(b) Graphite

(c) Lithium hydroxide

(d) Lithium carbide

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My question comes from Lithium-Ion Battery topic in division Storage Batteries of Automotive Engine Design

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Right option is (d) Lithium carbide

Explanation: During the charging process, lithium ions are released from the metal oxide and move through the separator to the graphite electrode where lithium carbide is formed. The energy stored in the charging process can be released again by the inverse chemical reaction.

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