Solid-state battery and modem: what they have in common

1. Step 1. Solid-state battery — is made of — Electrolyte. The electrolyte is solid (ceramic or polymer).
2. Step 2. Electrolyte — is material for — Car battery. Sulfuric acid is the electrolyte.
3. Step 3. Car battery — uses — Electrochemical reaction. It stores energy electrochemically.
4. Step 4. Electrochemical reaction — is used in — Fax. The paper darkened under current.
5. Step 5. Fax — has part — Modem. It transmits an image over a telephone line.

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