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Supercapacitor Toy S
Capacitors and batteries are similar in the sense that they can both store electrical power and then release it when needed. The big difference is that capacitors store power as an electrostatic field, while batteries use a chemical reaction to store and later release power. Inside a battery are two terminals (the anode and the cathode) with an electrolyte between them. An electrolyte is a substance (usually a liquid) that contained ions. Ions are atoms or molecules with an electrical charge.
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