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 (positively charged ions) and anodes from anions (negatively charged ions).

In a device that consumes electricity, the anode is the charged negative 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

2 comments

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
^^^^ It has been over two years, this could do with fixing... anions are negative! 
Cancel

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

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

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

SearchStorage

Close