negative electrode

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cath·ode (Ca, C),

The negative pole of a galvanic battery or the electrode connected with it; the electrode toward which positively charged ions (cations) migrate and are reduced, and into which electrons are fed from their source (anode or generator). Compare: anode.
Synonym(s): negative electrode
[G. kathodos, a way down, fr. kata, down, + hodos, a way]
Farlex Partner Medical Dictionary © Farlex 2012


(C) (kath'ōd)
1. The negative pole of a galvanic battery or the electrode connected with it; the electrode to which positively charged ions (cations) migrate.
Compare: anode
2. Negatively charged part of the x-ray tube head; it contains the tungsten filament.
Synonym(s): negative electrode.
[G. kathodos, a way down, fr. kata, down, + hodos, a way]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

negative electrode

A cathode; the pole by which electric current leaves the generating source.
See also: electrode
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Xu, "Electrochemical performance of pre-lithiated graphite as negative electrode in lithiumion capacitors," Russian Journal of Electrochemistry, vol.
Stirring in the flow field was found to be the deciding factor of whether solid particles could successfully be transferred to the negative electrode. Specifically, it determines the contacting frequency between the solid particles and the negative electrode.
The developed type R thermocouple wire developed here is the world's first to utilize oxide dispersion strengthened (ODS) platinum on the negative electrode, and succeeded in increasing the high-temperature creep strength of the negative eletrode by ten times compared to conventional wire.
In addition, the carbon nanotubes have many oxygen groups on their surfaces, which can store a large number of lithium ions; this enables carbon nanotubes for the first time to serve as the positive electrode in lithium batteries, instead of just the negative electrode.
Panasonic has responded to these challenges with the new battery cells, employing its unique high capacity nickel based positive electrode technology as well as its material and processing technology which prevents deformation of the alloy-based negative electrode when subjected to repeated charge and discharge.
In the past, fast recharges were a stumbling block for lead-acid batteries, because they produce electricity by a chemical reaction that forms hydrogen sulfide on the negative electrode. The coating causes the electrode to fail, especially when recharged at high currents.
The firm plans to build on its present SCiB lithium-ion battery technology, which utilises a lithium-titanium oxide negative electrode instead of a carbon-based negative electrode.
The electrochemical energy in a cell (and battery) is driven by the active materials used within the cells, namely the positive electrode, or cathode, and the negative electrode, or anode.
According to Toshiba, a "breakthrough" technology applied to the negative electrode uses new nano-particles to prevent organic liquid electrolytes from reducing during battery recharging, without causing any deterioration in the electrode.
(In fact, that turned out to be wrong, however, and electricity flowed from the negative electrode to the positive.) All these names were suggested to Faraday by the British scholar William Whewell (1794-1866), who also coined the word scientist in the next decade.
Rechargeable batteries typically contain a positive electrode and a negative electrode, consisting of "active material" to store lithium.
The lithium ion device basically involves three key components: anode (negative electrode), cathode (positive electrode), and electrolyte.