cathode

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Related to cathodes: Cold Cathodes, Copper cathodes

cathode

 [kath´ōd]
the electrode at which reduction occurs and to which cations are attracted. adj., adj cathod´ic.

cath·ode (Ca, C),

(kath'ōd),
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]

cathode

/cath·ode/ (kath´ōd) the electrode at which reduction occurs and to which cations are attracted.cathod´ic

cathode (C)

[kath′ōd]
Etymology: Gk, kata, down, hodos, way
1 the electrode at which reduction occurs.
2 the negative side of the x-ray tube, which consists of the focusing cup and the filament.

cath·ode

(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]

cathode

a negatively charged electrode to which positively charged ions move. Compare ANODE.

Cathode

The negative electrode from which an electromagnetic current flows.

cath·ode

(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]

cathode (kath´ōd),

n a negative electrode from which electrons are emitted and to which positive ions are attracted. In radiographic tubes, the cathode usually consists of a helical tungsten filament, behind which a molybdenum reflector cup is located to focus the electron emission toward the target of the anode.
cathode ray tube (CRT),
n a vacuum tube in which a beam of electrons is focused to a small point on a luminescent screen and can be varied in position to form a pattern.

cathode

1. the negative electrode, from which electrons are emitted and to which positive ions are attracted.
2. the electrode through which current leaves a nerve or other substance.

cathode beam, cathode ray
the beam of electrons, accompanied by high electrical potential which flows from the cathode to the anode in the x-ray tube and interacts with the tungsten target to produce x-rays.
cathode filament
the source of electrons in the cathode tube that interacts with the anode target to produce x-rays.
References in periodicals archive ?
Co-author Tohru Suzuki, said that in a lithium-ion battery, lithium ions move from the anode to the cathode during discharge and back when charging.
To minimize the primary current distribution, it is recommended that anode to cathode surface area ratios should not exceed 2:1 and anode length should be three to six inches shorter than the cathode.
2] cathodes Pressing Cathode's Apparent force, F weight, m density, [kN] [g] [D.
Voltaic equivalent in these cathodes does not exceed 2 V, and presence of barium in the arc atmosphere increases stability of the arc discharge burning and reduces gradient of electric voltage in the arc column.
The resulting cathodes use catalysts never tested before because the method to make small cathode samples did not exist, but also because, until recently, no one knew how to make the metallic nanopowders uniformly and in quantities large enough to test.
3M currently offers three cathode products: BC-618, BC-718 and BC-723.
Before the carbon nanotube cathodes developed by Georgia Tech can be used on satellites, however, their lifetime will have to be increased to match that of a satellite thruster, which is typically 2,000 hours or more.
high affinity of Ca for Oxygen allows the advanced reduction of the Oxygen content in cathode, towards level of ppm, enabling high quality alloys obtaining.
52 eV) [3] in heating up to 2500 K is able to emit electron current up to 500 mA from each square centimeter of open cathode area, while some oxide cathodes showed at lower temperatures emission current density 1 * [10.
A battery typically consists of two electrodes--a positive cathode and a negative anode--immersed in a substance through which charged atoms, or ions, can flow.
3M's cathode materials containing nickel, manganese and cobalt are an important technology for current and next generation lithium ion batteries.
In 1997, researchers at the University of Texas in Austin propose a new cathode material, lithium iron phosphate, which is cheaper and safer than lithium cobalt oxide.