mercury cell
Học thuậtThân thiện
Definition
Noun: A mercury cell is a type of primary (non-rechargeable) electrochemical cell. Its specific components are a zinc anode, a cathode made from mercury oxide, and an electrolyte solution of potassium hydroxide.
Usage
The term "mercury cell" is used to describe this specific, now largely obsolete, type of battery. It is a technical term found in contexts like electronics, chemistry, and discussions of battery technology history. * Due to environmental concerns regarding mercury, mercury cells are no longer commonly manufactured or used. * The stable voltage output of a mercury cell made it suitable for applications like hearing aids, watches, and calculators before alternatives were developed.
Examples
- The old calculator was powered by a small mercury cell.
- Disposal of mercury cells requires special handling because they contain toxic materials.
- Compared to alkaline batteries, mercury cells provided a very flat discharge curve.
Advanced Usage / Notes
- Technical Specification: Mercury cells typically produced a nominal voltage of 1.35 volts.
- Historical Context: The term is often used in a historical or technical descriptive sense, as their use has been phased out in favor of less toxic battery chemistries like silver-oxide, lithium, or zinc-air.
Variants and Related Words
- Mercury Battery: A common synonym for "mercury cell."
- Mercury-Oxide Battery: A more descriptive technical name.
- Primary Cell: The general category of non-rechargeable batteries to which the mercury cell belongs.
- Button Cell: A common form factor for mercury cells, though not exclusive to this chemistry.
Synonyms
- Mercury battery
- Mercury-oxide cell
Antonyms / Contrasts
- Rechargeable Cell: A secondary cell (e.g., lithium-ion, NiMH) that can be recharged, unlike a primary mercury cell.
- Modern Alternatives: Zinc-air cell, silver-oxide cell, lithium primary cell.
Noun
- a primary cell consisting of a zinc anode and a cathode of mercury oxide and an electrolyte of potassium hydroxide