Voltaic Cell
| Formula / Notation | E°cell = E°cathode - E°anode |
|---|---|
| Also Known As | Galvanic cell, electrochemical cell (spontaneous), battery cell, Daniell cell (example) |
What is Voltaic Cell?
A voltaic cell (galvanic cell) is an electrochemical cell that converts chemical energy into electrical energy through a spontaneous redox reaction. It consists of two half-cells: an anode (oxidation occurs) and a cathode (reduction occurs), connected by a salt bridge or porous membrane to allow ion flow while preventing direct mixing. Named after Alessandro Volta, inventor of the electric battery.
Formula & Notation
Other Names / Synonyms: Galvanic cell, electrochemical cell (spontaneous), battery cell, Daniell cell (example)
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A voltaic cell (galvanic cell) is an electrochemical cell that converts chemical energy into electrical energy through a spontaneous redox reaction. It consists of two half-cells: an anode (oxidation occurs) and a cathode (reduction occurs), connected by a salt bridge or porous membrane to allow ion flow while preventing direct mixing. Named after Alessandro Volta, inventor of the electric battery.
Batteries (primary and secondary). Sensors (electrochemical detection). Fuel cells. Corrosion measurement (galvanic corrosion). Electrochemical research. Energy storage. Biological systems (Na⁺/K⁺ gradients are voltaic-cell analogs). Medical devices (pacemaker batteries).
Electrolyte solutions are often toxic or corrosive. Hydrogen may be generated at electrodes — fire hazard. Some batteries contain toxic metals (Pb, Cd, Hg). Damaged batteries may leak corrosive electrolyte. High-current voltaic cells can cause fires if short-circuited.
The formula or notation for Voltaic Cell is: E°cell = E°cathode - E°anode