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Which outcome results when thermal runaway causes a lithium-ion capacitor to exceed its rated temperature?

A)Electrolyte decomposition boosts internal resistance
B)Increased dielectric constant enhances stability
C)Reduced plate separation decreases capacitance
D)Decreased ionic conductivity lowers reactance

💡 Explanation

Electrolyte decomposition increases internal resistance because thermal runaway induces oxidation and reduction, leading to gas and heat release, causing cell swelling via the Arrhenius equation. Therefore resistance increases, rather than better stabilizing capacitance, due to excess heat.

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