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← ScienceWhich mechanism limits the maximum energy storage capacity of a supercapacitor?
A)Electrolyte decomposition at high voltage✓
B)Increased resistance from electrode oxidation
C)Reduced capacitance from surface contamination
D)Decreased ion mobility at low temperature
💡 Explanation
When voltage increases,electrolyte decomposition happens because it exceeds the electrochemical stability window of the electrolyte leading to gas formation/resistance increase hence it limits energy storage. Therefore Electrolyte decomposition results rather than oxidation, contamination, or reduced mobility which require different chemical/physical conditions.
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