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  2. Electrolysis - Wikipedia

    en.wikipedia.org/wiki/Electrolysis

    The cathode is a mixed metal oxide clad titanium anode (also called a dimensionally stable anode). [27] [28] Basic membrane cell used in the electrolysis of brine. At the anode (A), chloride (Cl −) is oxidized to chlorine.

  3. Electrolysis of water - Wikipedia

    en.wikipedia.org/wiki/Electrolysis_of_water

    Electrolysis in pure water consumes/reduces H + cations at the cathode and consumes/oxidizes hydroxide (OH −) anions at the anode. This can be verified by adding a pH indicator to the water: Water near the cathode is basic while water near the anode is acidic.

  4. Anode - Wikipedia

    en.wikipedia.org/wiki/Anode

    The terms anode and cathode are not defined by the voltage polarity of electrodes, but are usually defined by the direction of current through the electrode. An anode usually is the electrode of a device through which conventional current (positive charge) flows into the device from an external circuit, while a cathode usually is the electrode through which conventional current flows out of ...

  5. Proton exchange membrane electrolysis - Wikipedia

    en.wikipedia.org/wiki/Proton_exchange_membrane...

    Proton exchange membrane (PEM) electrolysis is the electrolysis of water in a cell equipped with a solid polymer electrolyte (SPE) [3] that is responsible for the conduction of protons, separation of product gases, and electrical insulation of the electrodes. The PEM electrolyzer was introduced to overcome the issues of partial load, low ...

  6. Electrolytic cell - Wikipedia

    en.wikipedia.org/wiki/Electrolytic_cell

    Electrolysis is a technique that uses a direct electric current (DC). Commercially, electrolytic cells are used in the electrorefining and electrowinning of several non-ferrous metals. Most high-purity aluminum , copper , zinc , and lead are produced industrially in electrolytic cells.

  7. Solid oxide electrolyzer cell - Wikipedia

    en.wikipedia.org/wiki/Solid_oxide_electrolyzer_cell

    The net cell reaction yields hydrogen and oxygen gases. The reactions for one mole of water are shown below, with oxidation of oxide ions occurring at the anode and reduction of water occurring at the cathode. Anode: 2 O 2− → O 2 + 4 e −. Cathode: H 2 O + 2 e − → H 2 + O 2−. Net Reaction: 2 H 2 O → 2 H 2 + O 2

  8. Alkaline water electrolysis - Wikipedia

    en.wikipedia.org/wiki/Alkaline_water_electrolysis

    The diaphragm further avoids the mixing of the produced hydrogen and oxygen at the cathode and anode, [13] [14] respectively. The thickness of asbestos diaphragms ranges from 2 to 5 mm, while Zirfon diaphragms range from 0.2 to 0.5 mm. [11] Typically, Nickel based metals are used as the electrodes for alkaline water electrolysis. [15]

  9. Cathode - Wikipedia

    en.wikipedia.org/wiki/Cathode

    The cathode supplies electrons to the positively charged cations which flow to it from the electrolyte (even if the cell is galvanic, i.e., when the cathode is positive and therefore would be expected to repel the positively charged cations; this is due to electrode potential relative to the electrolyte solution being different for the anode ...