Electrochemical reaction
principle · 1800 · Industrial Revolution
A chemical reaction in which electrons flow through an external circuit — the basis of batteries.
Principles and materials it uses
- Oxidation — uses. Redox reactions.
Where it is used
- Voltaic pile — is used in. Current arises from the reaction of dissimilar metals with an electrolyte.
- Lead–acid battery — is used in. A reversible reaction of lead and lead dioxide in sulfuric acid.
- Lithium-ion battery — is used in. Electrons flow through the external circuit while lithium ions move between the electrodes.
- Direct current — is used in. The first source of direct current was galvanic.
- Fuel cell — is used in. The reaction runs electrochemically, without combustion.
- Dry cell — is used in. A chemical source of current.
- Nickel–metal hydride battery — is used in. A chemical source.
- Electrolysis — is used in. An electrochemical process.
- Glucose meter — is used in. An electrochemical sensor.
- pH meter — is used in. A glass electrode.
- Fax — is used in. The paper darkened under current.
- Car battery — is used in. It stores energy electrochemically.
- Alkaline battery — is used in. An electrochemical reaction.