A supercapacitor is a type of capacitor that obtains and releases energy by polarizing an electrolyte with a high internal dielectric constant. It has the ability to charge and discharge, and this ability determines its service life due to different internal chemical media. As internal chemical media, there are ceramic media, traditional activated carbon media (acidic electrolyte), and graphene oxide media (alkaline electrolyte). The larger the dielectric constant, the longer its service life
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