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Electrical conductor used to make contact with nonmetallic parts of a circuit
Look up electrode in Wiktionary, the free dictionary. An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit
Electrode
Examination of the heart's electrical activity
time of the electrical activity of the heart using electrodes placed on the skin. These electrodes detect the small electrical changes that are a consequence
Electrocardiography
Electromotive force of a cell built of two electrodes
electrochemistry, electrode potential is the voltage of a galvanic cell built from a standard reference electrode and another electrode to be characterized
Electrode_potential
Electromotive force of a half reaction cell versus standard hydrogen electrode
In electrochemistry, standard electrode potential E⦵ or E⦵ red, is the electrode potential (a measure of the reducing power of any element or compound)
Standard_electrode_potential
Electrode with a stable and accurate electrode potential
A reference electrode is an electrode that has a stable and well-known electrode potential. The overall chemical reaction taking place in a cell is made
Reference_electrode
A fluoride selective electrode is a type of ion selective electrode sensitive to the concentration of the fluoride ion. A common example is the lanthanum
Fluoride_selective_electrode
The Severinghaus electrode is an electrode that measures carbon dioxide (CO2). It was developed by Dr. John W. Severinghaus and his technician A. Freeman
Severinghaus_electrode
Manual arc welding process
stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld. An electric current, in the form
Shielded_metal_arc_welding
Measure of the level of acidity or basicity of an aqueous solution
hydrogen electrode and a standard electrode such as the silver chloride electrode. The pH of aqueous solutions can be measured with a glass electrode and a
PH
Sensor of ion concentration in a solution
An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a simple membrane-based potentiometric device which measures the activity
Ion-selective_electrode
Device that generates sparks in internal combustion engines
threaded shell, electrically isolated from a central electrode by a ceramic insulator. The central electrode, which may contain a resistor, is connected by
Spark_plug
Instrument measuring acidity or alkalinity of solutions
measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes referred to as a "potentiometric
PH_meter
Crystalline form of carbon
used all the way down to the electrode holder. A new electrode replaces the old one, but a sizeable piece of the old electrode remains. This is crushed and
Graphite
Electrode that is pH-sensitive
glass electrodes is for the measurement of pH. The pH electrode is an example of a glass electrode that is sensitive to hydrogen ions. Glass electrodes play
Glass_electrode
Method of analyzing electrochemical reactions
a type of voltammetric measurement where the potential of the working electrode is ramped linearly versus time. Unlike in linear sweep voltammetry, after
Cyclic_voltammetry
Data values of standard electrode potential
The data below tabulates standard electrode potentials (E⦵ red), in volts relative to the standard hydrogen electrode (SHE), at: Temperature 298.15 K (25
Standard electrode potential (data page)
Standard_electrode_potential_(data_page)
Welding process
welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode are protected from oxidation or other atmospheric
Gas_tungsten_arc_welding
Type of steam boiler
An electrode boiler (jet type) is a type of boiler that uses electricity flowing through streams of water to create steam. The conductive and resistive
Electrode_boiler
Reference redox electrode used under standard conditions
In electrochemistry, the standard hydrogen electrode (abbreviated SHE), is a redox electrode which forms the basis of the thermodynamic scale of oxidation-reduction
Standard_hydrogen_electrode
Industrial welding process
wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to fuse (melt and join). Along with the wire electrode, a shielding
Gas_metal_arc_welding
Common type of reference electrode in electrochemistry
A silver chloride electrode is a type of reference electrode, commonly used in electrochemical measurements. For environmental reasons it has widely replaced
Silver_chloride_electrode
Electrode through which conventional current flows into a polarized electrical device
An anode usually is an electrode of a polarized electrical device through which conventional current enters the device. This contrasts with a cathode
Anode
two types of ideal electrode: the ideal polarizable electrode and the ideal non-polarizable electrode. An ideal polarizable electrode is characterized by
Ideal_electrode
Physical law in electrochemistry
potential of a reaction (half-cell or full cell reaction) from the standard electrode potential, absolute temperature, the number of electrons transferred in
Nernst_equation
Reference electrode
The saturated calomel electrode (SCE) is a reference electrode based on the reaction between elemental mercury and mercury(I) chloride. It has been widely
Saturated_calomel_electrode
High-capacity electrochemical capacitor
into 3 types: Electrostatic double-layer capacitors (EDLCs) use carbon electrodes or derivatives with much higher electrostatic double-layer capacitance
Supercapacitor
Fabrication process for joining materials
non-consumable electrode processes. Counter-intuitively, DCEP provides more penetration with consumable electrode processes. A consumable electrode, like a welding
Welding
Type of rechargeable battery
voltage of 3.6 or 3.7 V. M. Stanley Whittingham conceived intercalation electrodes in the 1970s and created the first rechargeable lithium-ion battery, based
Lithium-ion_battery
Gel used with medical skin electrodes
Skin electrode gels are used extensively to reduce electrical resistance when using skin surface electrodes, both for medical instrumentation such as EEG
Skin_electrode_gel
Specialized powerline in HVCD technology
An electrode line is used in some high-voltage direct-current (HVDC) power transmission systems, to connect the converter stations to distant ground electrodes
Electrode_line
An electrode array is a configuration of electrodes used for measuring either an electric current or voltage. Some electrode arrays can operate in a bidirectional
Electrode_array
Method of analyzing electrochemical reactions
ionic electrolyte, and two or three electrodes, with oxidation and reduction reactions occurring at the electrode/electrolyte interfaces. As a species
Voltammetry
Method of scalp electrodes placement
internationally recognized method to describe and apply the location of scalp electrodes in the context of an EEG exam, polysomnograph sleep study, or voluntary
10–20_system_(EEG)
Type of furnace
charge) is directly exposed to an electric arc, and the current from the electrode terminals passes through the charge material. Arc furnaces differ from
Electric_arc_furnace
Electrode measuring the oxygen partial pressure in a solution
The Clark electrode is an electrode that measures ambient oxygen partial pressure in a liquid using a catalytic platinum surface according to the net
Clark_electrode
Electronic system controlling a three electrode cell
working electrodes and more than two working electrodes, respectively. The system functions by maintaining the potential of the working electrode at a constant
Potentiostat
HVDC plant in Sweden
basin design of the electrodes prevents fishes from getting too close to the electrodes, which may harm them. The Almvik electrode is connected with Västervik
HVDC_Gotland
Electrode potential in electrochemistry
Absolute electrode potential, in electrochemistry, according to an IUPAC definition, is the electrode potential of a metal measured with respect to a universal
Absolute_electrode_potential
Method of measuring biological cell currents
two-electrode clamp makes it possible to clamp large currents that are impossible to control with single-electrode patch techniques. The two-electrode system
Voltage_clamp
Reference electrode whose potential depends on pH
A reversible hydrogen electrode (RHE) is a reference electrode, more specifically a subtype of the standard hydrogen electrodes, for electrochemical processes
Reversible_hydrogen_electrode
Printed measurement device
Screen-printed electrodes (SPEs) are electrochemical measurement devices that are manufactured by printing different types of ink on plastic or ceramic
Screen-printed_electrodes
Simple battery made with a lemon for educational purposes
(oxidation-reduction) that occurs in batteries. The zinc and copper are the electrodes, and the juice inside the lemon is the electrolyte. There are many variations
Lemon_battery
Part of a PEM fuel cell
electrode used in fuel cells and electrolyzers. The PEM is sandwiched between two electrodes which have the catalyst embedded in them. The electrodes
Membrane_electrode_assembly
Electrode on which an electrochemical reaction occurs
with an auxiliary electrode, and a reference electrode in a three-electrode system. Depending on whether the reaction on the electrode is a reduction or
Working_electrode
Electrode which supplies/accepts current from the working electrode
electrochemistry, the auxiliary electrode, often also called the counter electrode, is an electrode used in a three-electrode electrochemical cell for voltammetric
Auxiliary_electrode
Welding process
welding power supply to create an electric arc between a metal stick ("electrode") and the base material to melt the metals at the point of contact. Arc
Arc_welding
The quinhydrone electrode may be used to measure the hydrogen ion concentration (pH) of a solution containing an acidic substance. Quinones form a quinhydrone
Quinhydrone_electrode
Metal fabrication process
between two electrodes, separated by a dielectric liquid and subject to an electric voltage. One of the electrodes is called the tool electrode (or simply
Electrical discharge machining
Electrical_discharge_machining
Device for long-term recording or stimulation of neural activity in living tissue
A chronic electrode implant is an electronic device implanted chronically (for a long period) into the brain or other electrically excitable tissue. It
Chronic_electrode_implant
Reference point in an electrical circuit from which voltages are measured
material, called grounding electrode or earthing electrode, is buried in the soil to act as an earth ground. A grounding electrode conductor or ground conductor
Ground_(electricity)
Reference electrode used in electrochemical study
The palladium-hydrogen electrode (abbreviation: Pd/H2) is one of the common reference electrodes used in electrochemical study. Most of its characteristics
Palladium-hydrogen_electrode
Use of high-frequency, alternating polarity, electrical current in medical operations
only one electrode while bipolar instruments include both electrodes in their design. The monopolar instrument called an "active electrode" when energized
Electrosurgery
Electrophysiological method to record electrical activity of the brain
neocortex and allocortex. It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International
Electroencephalography
Electrical grounding method for concrete foundations
grounding method developed during World War II. It uses a concrete-encased electrode to improve grounding in dry areas. The technique is used in construction
Ufer_ground
Working electrode used in hydrodynamic voltammetry
a rotating disk electrode (RDE) is a working electrode used in three-electrode systems for hydrodynamic voltammetry. The electrode rotates during experiments
Rotating_disk_electrode
Electrical properties of biological cells
electrophysiology techniques involve placing electrodes into various preparations of biological tissue. The principal types of electrodes are: Simple solid conductors
Electrophysiology
Electrode that uses a liquid metal
A liquid metal electrode is an electrode that uses a liquid metal, such as mercury, Galinstan, and NaK.[not verified in body] They can be used in electrocapillarity
Liquid_metal_electrode
Electrodes with a conjunction of a solid, liquid and gaseous interface
Gas diffusion electrodes (GDE) are electrodes with a conjunction of a solid, liquid and gaseous interface, and an electrical conducting catalyst supporting
Gas_diffusion_electrode
Electrochemical device
each electrode with a number that we would now call the work function of the electrode. This view ignored the chemical reactions at the electrode-electrolyte
Galvanic_cell
Electrode where reduction takes place
A cathode is the electrode from which a conventional current leaves a polarized electrical device such as a lead–acid battery. This definition can be
Cathode
Fixed-value capacitor using ceramic
or more alternating layers of ceramic and a metal layer acting as the electrodes. The composition of the ceramic material defines the electrical behavior
Ceramic_capacitor
Electric current generated by a redox reaction at an electrode
oxidation of some chemical substance at an electrode (i.e. by the redox reaction between a substance and an electrode). The net faradaic current is the algebraic
Faradaic_current
Joining metals using electricity, beneath a granulated flux material
requires a continuously fed consumable solid or tubular (metal cored) electrode. The molten weld and the arc zone are protected from atmospheric contamination
Submerged_arc_welding
Intracortical device designed to read the electrical signals of the brain
The neurotrophic electrode is an intracortical device designed to read the electrical signals that the brain uses to process information. It consists
Neurotrophic_electrode
Sexual practice
lack of sufficiently wide surface contact, i.e. bad contact, between the electrode and the skin's surface. Even at relatively low current and voltage, there
Erotic_electrostimulation
Equation characterising electrochemical kinetics
describes how the electrical current through an electrode depends on the voltage difference between the electrode and the bulk electrolyte for a simple, unimolecular
Butler–Volmer_equation
implant. Intracranial electrodes consist of conductive electrode arrays implanted on a polymer or silicon, or a wire electrode with an exposed tip and
Surface chemistry of neural implants
Surface_chemistry_of_neural_implants
Thermally induced flow of charge carriers from a surface
Thermionic emission is the liberation of charged particles from a hot electrode whose thermal energy gives some particles enough kinetic energy to escape
Thermionic_emission
Method of analyzing electrochemical reactions
the current at a working electrode is measured while the potential between the working electrode and a reference electrode is swept linearly in time
Linear_sweep_voltammetry
Type of electrophysiological monitoring
electroencephalography (iEEG), is a type of electrophysiological monitoring that uses electrodes placed directly on the exposed surface of the brain to record electrical
Electrocorticography
Type of rechargeable battery
a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the older nickel–cadmium cell (NiCd), with both
Nickel–metal_hydride_battery
Equation used in cyclic voltammetry
= number of electrons transferred in the redox event (usually 1) A = electrode area in cm2 F = Faraday constant in C mol−1 D = diffusion coefficient
Randles–Sevcik_equation
A carbon-paste electrode (CPE) is made from a mixture of conducting graphite powder and a pasting liquid. These electrodes are simple to make and offer
Carbon_paste_electrode
Plot of thermodynamically stable phases of an aqueous electrochemical system
labeled EH for the voltage potential with respect to the standard hydrogen electrode (SHE) as calculated by the Nernst equation. The "H" stands for hydrogen
Pourbaix_diagram
Branch of physical chemistry
electric circuit, but not necessarily, as in electroless plating) between electrodes separated by an ionically conducting and electronically insulating electrolyte
Electrochemistry
Semi-automatic or automatic arc welding process
welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current
Flux-cored_arc_welding
A cellulose electrode is a welding electrode that has a coating containing organic materials. About 30% of the coating weight is cellulose. In some countries
Cellulose_electrode
Measuring electric potential of a solution as titrant is added
electrodes are used, an indicator electrode (the glass electrode and metal ion indicator electrode) and a reference electrode. Reference electrodes generally
Potentiometric_titration
Electrostatic generator operating on the triboelectric effect
electrode is very small. After the machine is started, the voltage on the terminal electrode increases until the leakage current from the electrode equals
Van_de_Graaff_generator
Method of chemical analysis
of voltammetry where the working electrode is a dropping mercury electrode (DME) or a static mercury drop electrode (SMDE), which are useful for their
Polarography
Chemical reaction with oxidation state changes
being reduced; this is often described in terms of redox couples and electrode potentials. In atom transfer, an atom passes from one substrate to another;
Redox
Ionization of air around a high-voltage conductor
the voltage on the highly curved electrode. If the curved electrode is positive with respect to the flat electrode, it has a positive corona; if it is
Corona_discharge
Difference between a redox reaction's reduction potential and actual potential
hydrogen electrode in aqueous solution, in a hydrogen evolution reaction. Substituting an electrocatalytically inert glassy carbon electrode for the platinum
Overpotential
Antique medical appliance
current in direct contact with the skin. Treat the spine and hold the electrode in the hand. Ozone inhalations for about four minutes are also of importance
Violet_ray
is composed of a three-electrode cell: an interrogating (or working) electrode, a reference electrode, and a counter electrode. A signal is generated
Electrochemical aptamer-based biosensors
Electrochemical_aptamer-based_biosensors
Molecular interface between a surface and a fluid
important to other phenomena, such as the electrochemical behaviour of electrodes. DLs play a fundamental role in many everyday substances. For instance
Double layer (surface science)
Double_layer_(surface_science)
Force observed on an asymmetric capacitor
high voltage applied to the electrodes of an asymmetric capacitor causes a net propulsive force toward the smaller electrode. Brown believed this effect
Biefeld–Brown_effect
Storage of electricity within an electrochemical cell
surface of suitable electrodes. Pseudocapacitance is accompanied by an electron charge-transfer between electrolyte and electrode coming from a de-solvated
Pseudocapacitance
Metal added to join two other metal parts
exist—covered electrodes, bare electrode wire or rod, tubular electrode wire, and welding fluxes. Sometimes non-consumable electrodes are included as
Filler_metal
Lithium-ion battery cathode material
mobile devices and electric vehicles, acting as the positively charged electrode, commonly called the cathode (though when charging it is actually the
Lithium nickel manganese cobalt oxides
Lithium_nickel_manganese_cobalt_oxides
Device in neurophysiology
voltage between the inside and the outside of the cell. When recording, the electrodes on an MEA transduce the change in voltage from the environment carried
Microelectrode_array
Measure of the tendency of a substance to gain or lose electrons
chemical species to acquire electrons from, or lose electrons to, an electrode and thereby be reduced or oxidised respectively. Redox potential is expressed
Reduction_potential
Electricity-induced chemical reaction
nitrogen. He used a high voltage battery and non-reactive electrodes and vessels such as gold electrode cones that doubled as vessels bridged by damp asbestos
Electrolysis_of_water
Class of electrodes
The copper–copper(II) sulfate electrode is a reference electrode of the first kind, based on the redox reaction with participation of the metal (copper)
Copper–copper(II) sulfate electrode
Copper–copper(II)_sulfate_electrode
Secondly, the electrode contacting electrolyte is used as a working electrode (WE), together with a counter electrode (CE) and a reference electrode (RE), in
Electrochemical quartz crystal microbalance
Electrochemical_quartz_crystal_microbalance
Structure in electrochemistry
electrochemistry, a half-cell is a structure that contains a conductive electrode and a surrounding conductive electrolyte separated by a naturally occurring
Half-cell
PH electrode
The antimony electrode has been investigated for its ability to function as a pH electrode. The electrode is made of elemental antimony. The electrochemical
Antimony_electrode
Type of electrode used in vacuum tubes
A plate, usually called anode in Britain, is a type of electrode that forms part of a vacuum tube. It is usually made of sheet metal, connected to a wire
Plate_electrode
electrodes (current electrodes). Figures 1–4 show the possible configuration of the measurement setup. The electrodes A and B are current electrodes which
Vertical_electrical_sounding
Swedish-Finnish high voltage direct current transmission
coast at 60°24'16"N 18°8'4"E. However, the electrode line from the static inverter plant to the ground electrode situated at 60°35'51"N 17°57'46"E is built
Fenno–Skan
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