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Electrocaloric multilayer coolers
Electrocaloric multilayer coolers are solid-state cooling devices that use stacks of thin ferroelectric or relaxor ceramic or polymer layers, driven by electric fields, to pump heat through the electrocaloric effect.
Electrocaloric polymer cooling
Electrocaloric polymer cooling is a solid-state refrigeration approach in which ferroelectric polymer films pump heat reversibly under an electric field, pursued as a refrigerant-free alternative to vapor compression.
Electrocarboxylation
Electrocarboxylation, also called electrochemical carboxylation, is an organic electrosynthesis method that electrochemically fixes carbon dioxide into organic substrates at a cathode, forming carbon–carbon bonds and yielding carboxylic acids.
Electrocardiographic imaging
Electrocardiographic imaging (ECGI) is a noninvasive mapping method that reconstructs the heart's electrical activity from body-surface ECGs and CT geometry, used to locate arrhythmias before ablation.
Electrocardiographic monitoring
Electrocardiographic monitoring is the continuous or intermittent recording of the heart's electrical activity over hours to years, using Holter monitors, patches, telemetry, and implanted devices.
Electrocardiography
Electrocardiography (ECG/EKG) records the heart's electrical potentials at the body surface over time. Pioneered by Waller (1887) and Einthoven's string galvanometer (1901–1903, Nobel 1924), now a 12-lead standard with wearable variants.
Electrocardiography in myocardial infarction
Electrocardiography in myocardial infarction (ECG in heart attack): use of the 12-lead ECG, within 10 minutes of first contact, to detect STEMI via ST-elevation criteria, guide reperfusion, and extend with posterior and right-sided leads.
Electrocatalysis
Electrocatalysis is the catalysis of electron-transfer reactions at electrode–electrolyte interfaces, including hydrogen evolution, oxygen evolution, and CO2 reduction, underpinning fuel cells, water electrolyzers, and electrosynthesis. Quantitative study began with Haber's 1898 book.
Electrocatalyst degradation
Electrocatalyst degradation is the loss of catalyst activity or integrity in devices such as fuel cells and electrolyzers, caused by dissolution, ripening, agglomeration, and detachment.
Electrocatalytic C–H activation
Electrocatalytic C–H activation is the conversion of inert carbon–hydrogen bonds in an electrochemical cell, where electrons from a circuit replace the stoichiometric oxidants conventional methods consume.
Electrocatalytic carbon dioxide reduction
Electrocatalytic carbon dioxide reduction (CO2RR) is an electrochemistry method that uses electric current and a catalyst to convert CO2 into chemicals such as ethylene and ethanol.
Electrocatalytic depolymerization
Electrocatalytic depolymerization is the breakdown of polymers like nylon, PET, and polystyrene into monomers or valuable chemicals using electrode potentials instead of heat or harsh reagents.
Electrocatalytic glycerol valorization
Electrocatalytic glycerol valorization is the electrochemical conversion of glycerol, the main biodiesel byproduct, into valuable chemicals like dihydroxyacetone, lactic acid, and formic acid, often paired with hydrogen production.
Electrocatalytic hydrodefluorination of PFAS
Electrocatalytic hydrodefluorination of PFAS is a water-treatment approach in which a cathode under negative potential replaces fluorine on PFAS with hydrogen, cleaving strong carbon–fluorine bonds reductively.
Electrocatalytic hydrogen evolution reaction
The electrocatalytic hydrogen evolution reaction (HER) is the cathodic half-reaction of water splitting, where catalysts at an electrode produce hydrogen gas and set the electrolyzer's efficiency.
Electrocatalytic hydrogenation of phenolic bio-oil compounds
Electrocatalytic hydrogenation of phenolic bio-oil compounds is an electrochemical method that upgrades lignin-derived phenols at a cathode, using hydrogen from water at ambient pressure and temperatures at or below 80 °C.
Electrocatalytic nitrate-to-ammonia
Electrocatalytic nitrate-to-ammonia, abbreviated eNO₃RR or NO₃RR, is an electrochemical process that reduces nitrate ions in water to ammonia at a cathode under ambient temperature and pressure, cleaning polluted water while recovering ammonia for fertilizer.
Electrocatalytic nitrate-to-ammonia conversion
Electrocatalytic nitrate-to-ammonia conversion is an electrolytic process that reduces nitrate ions in water to ammonia at a catalyst electrode under ambient temperature and pressure, combining wastewater remediation with ammonia production using renewable electricity.
Electrocatalytic oxidation
Electrocatalytic oxidation is an electrochemical method that oxidizes substrates at a catalytic anode surface, serving chemical synthesis, wastewater remediation, and energy-saving electrolysis with hydrogen at the cathode.
Electrocatalytic oxygen evolution reaction
The electrocatalytic oxygen evolution reaction (OER) is the anodic oxidation of water releasing oxygen gas, the sluggish bottleneck of water electrolysis and its main energy loss.
Electrocatalytic oxygen reduction to hydrogen peroxide in flow reactors
Electrocatalytic oxygen reduction to hydrogen peroxide in flow reactors is the continuous on-site production of H2O2 by reducing oxygen at a cathode in an electrochemical flow cell.
Electrocatalytic urea synthesis from CO2 and nitrate
Electrocatalytic urea synthesis from CO2 and nitrate is an electrochemical route that co-reduces carbon dioxide and nitrate ions into urea at ambient temperature and pressure.
Electrocatalytic water oxidation
Electrocatalytic water oxidation, the oxygen evolution reaction (OER), is the anodic half-reaction of water splitting, in which an electrode catalyst oxidizes water to oxygen gas and limits electrolyzer efficiency.
Electrocauterization
Electrocauterization is a surgical technique using electrically heated instruments to cut tissue and stop bleeding, used for small vessels, chronic nosebleeds, and removing skin growths.
Electrochemical additive manufacturing
Electrochemical additive manufacturing (ECAM) is a family of non-thermal 3D printing techniques that builds metal structures by electrochemical deposition at room temperature, offering nanoscale resolution for microelectronics and sensing.
Electrochemical amination
Electrochemical amination is the use of electricity at electrode surfaces to form carbon–nitrogen bonds, best known through the nickel-catalyzed e-amination reported by Phil Baran's group in 2017.
Electrochemical Birch reduction
The electrochemical Birch reduction is a cathodic method that dearomatizes arenes to 1,4-cyclohexadienes using electrode electrons instead of pyrophoric alkali metals in cryogenic liquid ammonia.
Electrochemical C–H amination
Electrochemical C–H amination is a class of organic electrosynthetic reactions that converts carbon–hydrogen bonds into carbon–nitrogen bonds using electrode-supplied electricity instead of stoichiometric chemical oxidants.
Electrochemical C–H functionalization
Electrochemical C–H functionalization is a set of organic synthesis methods that convert carbon–hydrogen bonds into new carbon–carbon or carbon–heteroatom bonds using electrons at electrodes in place of chemical oxidants.
Electrochemical C–H oxidation
Electrochemical C–H oxidation is a synthetic method in which carbon–hydrogen bonds are oxidized at an electrode, with electric current replacing stoichiometric chemical oxidants for sustainable bond formation.