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Which consequence results when thermal runaway occurs in supercapacitors?

A)Electrolyte decomposition causes internal pressure
B)Increased capacitance lowers ESR
C)Electrode surface area rapidly expands
D)Separator pores permit efficient ion flow

💡 Explanation

During thermal runaway, electrolyte decomposition increases internal pressure because Joule heating accelerates gas generation. This rapid pressure increase can lead to explosive failure; therefore, pressure relief vents are needed, rather than efficient ion transport.

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