 Solution

ID: past-exam-of-the-mphil-in-micro-and-nanotechnology-enterprise-course-of-the-university-of-cambridge/2021/paper-1/11/i/b/solution

For the specified

x = 1

, the discharge half-reactions and their sum are

Anode: Cathode: Overall: Li ⟶ L i^{+} + e^{-}, CF + L i^{+} + e^{-} ⟶ C + LiF, Li + CF ⟶ C + LiF .

Each mole of CF formula units consumes one mole of lithium and transfers one mole of electrons. For general

x

, the corresponding formula-unit reaction would be

CF_{x} + x Li ⟶ C + x LiF

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