Browse Definitions :
Definition

anode

Contributor(s): Matthew Haughn

An anode is the electrode in a polarized electrical device through which current flows in from an outside circuit.

Conversely, a cathode is the eletrode in a polarized electrical device through which current flows out. Cathodes get their name from cations (negatively charged ions) and anodes from anions (positively charged ions).

In a device that consumes electricity, the anode is the charged positive electrode. Such devices include diodes, electrolytic cells in hydrogen production, and secondary battery cells in recharging batteries. However, in a device that produces power, the anode is the negative terminal, due to the flow of electrons being reversed. Such devices include electrolytic cells in hydrogen production, vacuum tubes, cathode ray tubes, oscilloscopes and primary battery cells (this includes all non-rechargeable batteries).

In many applications, since the anode releases electrons to produce current, it gradually breaks down due to the weakening of the bonds between the cathode’s atoms.

Demonstration of cathode and anode in a battery:

This was last updated in June 2014

Continue Reading About anode

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

Anion means negatively charged particles and cation means positively charged particles but in your article you have written anion is positively charged and cation is negatively charged why? Is it just a mistake or I'm wrong but in my book, which is prescribed by school, it is written that anion means negatively charged particles and cation means positively charged particles.
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

SearchSecurity

  • Advanced Encryption Standard (AES)

    The Advanced Encryption Standard, or AES, is a symmetric block cipher chosen by the U.S. government to protect classified ...

  • intrusion detection system (IDS)

    An intrusion detection system (IDS) is a system that monitors network traffic for suspicious activity and alerts when such ...

  • Secure Shell (SSH)

    SSH, also known as Secure Shell or Secure Socket Shell, is a network protocol that gives users, particularly system ...

SearchHealthIT

SearchDisasterRecovery

SearchStorage

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access ...

  • capacity management

    Capacity management is the broad term describing a variety of IT monitoring, administration and planning actions that are taken ...

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

Close