Dry Cells
| Formula / Notation | Zn(s)|NH₄Cl(aq)|MnO₂(s)|C; E°_cell ≈ 1.5 V |
|---|---|
| Also Known As | Dry battery, galvanic dry cell, Leclanché cell, AA/AAA battery (type) |
What is Dry Cells?
Electrochemical cells that use a paste or gel electrolyte rather than a liquid. The common zinc-carbon dry cell uses a zinc anode, manganese dioxide cathode, and ammonium chloride paste electrolyte. Dry cells are portable and used in flashlights and remote controls.
Formula & Notation
Other Names / Synonyms: Dry battery, galvanic dry cell, Leclanché cell, AA/AAA battery (type)
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
Electrochemical cells that use a paste or gel electrolyte rather than a liquid. The common zinc-carbon dry cell uses a zinc anode, manganese dioxide cathode, and ammonium chloride paste electrolyte. Dry cells are portable and used in flashlights and remote controls.
Dry cells are the most widely used portable energy sources: AA, AAA, C, D batteries (alkaline), 9V batteries. They power remote controls, clocks, torches, portable electronics, and emergency equipment. Modern variants include lithium primary cells (high energy density) and NiMH rechargeable cells.
Dry cells should not be short-circuited (fire, chemical leakage hazard), incinerated (explosion), or recharged (non-rechargeable types may leak or vent). Leaking alkaline cells contain KOH — corrosive to skin and eyes. Swallowed batteries (especially button cells) are a medical emergency.
The formula or notation for Dry Cells is: Zn(s)|NH₄Cl(aq)|MnO₂(s)|C; E°_cell ≈ 1.5 V