secondary cell
Học thuậtThân thiện
Definition
Noun: A secondary cell is an electrochemical cell that can be electrically recharged after use. This is achieved by applying an external electric current, which reverses the chemical reactions that occur during discharge, restoring the cell's original composition and energy storage capacity.
Usage
A secondary cell is designed for multiple discharge and recharge cycles. It is the core component of rechargeable batteries. - The lithium-ion battery in your phone contains a secondary cell. - Unlike a primary cell, a secondary cell can be reused hundreds of times. - The laboratory is researching new materials to improve the energy density of the secondary cell.
Advanced Usage
- In technical specifications: The term is often used in engineering and data sheets to specify the type of energy storage.
- The device's power source is a nickel-metal hydride (NiMH) secondary cell.
- In contrast to "primary cell": It is frequently defined in opposition to a non-rechargeable primary cell.
- For applications requiring long-term, low-cost use, a primary cell is suitable; for frequent cycling, a secondary cell is necessary.
Variants and Related Words
- Rechargeable battery: A common synonym and the more frequent term in everyday language. A rechargeable battery typically contains one or more secondary cells connected together.
- Storage battery: Another term, often used for larger assemblages of secondary cells, like those in cars or backup power systems.
- Accumulator: A traditional term, still used in some technical contexts and regions, synonymous with a secondary cell or battery.
Synonyms
- Rechargeable cell
- Storage cell
- Accumulator (in specific technical contexts)
Related Phrases/Concepts
- Charge cycle: The process of discharging and then recharging a secondary cell.
- This battery is rated for over 500 charge cycles.
- Depth of Discharge (DoD): How much of a secondary cell's capacity has been used, which affects its lifespan.
- Memory effect: A phenomenon in some types of secondary cells (like older NiCd) where partial discharge cycles can reduce usable capacity.
Noun
- a cell that can be recharged