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  2. Electrode - Wikipedia

    en.wikipedia.org/wiki/Electrode

    The cathode is in many ways the opposite of the anode. The name (also coined by Whewell) comes from the Greek words κάτω (kato), 'downwards' and ὁδός (hodós), 'a way'. It is the positive electrode, meaning the electrons flow from the electrical circuit through the cathode into the non-metallic part of the electrochemical cell.

  3. Cathode - Wikipedia

    en.wikipedia.org/wiki/Cathode

    For example, reversing the current direction in a Daniell galvanic cell converts it into an electrolytic cell [1] where the copper electrode is the positive terminal and also the anode. In a diode , the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device.

  4. Galvanic cell - Wikipedia

    en.wikipedia.org/wiki/Galvanic_cell

    The cathode is the electrode where reduction (gain of electrons) takes place (metal B electrode); in a galvanic cell, it is the positive electrode, as ions get reduced by taking up electrons from the electrode and plate out (while in electrolysis, the cathode is the negative terminal and attracts positive ions from the solution).

  5. Anode - Wikipedia

    en.wikipedia.org/wiki/Anode

    Positive and negative electrode vs. anode and cathode for a secondary battery. Battery manufacturers may regard the negative electrode as the anode, [10] particularly in their technical literature. Though from an electrochemical viewpoint incorrect, it does resolve the problem of which electrode is the anode in a secondary (or rechargeable) cell.

  6. Lead–acid battery - Wikipedia

    en.wikipedia.org/wiki/Lead–acid_battery

    The positive electrode is not a flat plate but a row of lead–oxide cylinders or tubes strung side by side, so their geometry is called tubular or cylindrical. The advantage of this is an increased surface area in contact with the electrolyte, with higher discharge and charge currents than a flat-plate cell of the same volume and depth-of ...

  7. Silver oxide battery - Wikipedia

    en.wikipedia.org/wiki/Silver_oxide_battery

    A silver oxide battery uses silver(I) oxide as the positive electrode , zinc as the negative electrode , plus an alkaline electrolyte, usually sodium hydroxide (NaOH) or potassium hydroxide (KOH). The silver is reduced at the cathode from Ag(I) to Ag, and the zinc is oxidized from Zn to Zn(II). The half-cell reaction at the positive plate:

  8. Electrolytic cell - Wikipedia

    en.wikipedia.org/wiki/Electrolytic_cell

    Likewise, he defined the anode as the electrode to which anions (negatively charged ions, like chloride ions Cl − ) flow within the cell, to be oxidized by depositing electrons on the electrode. To an external wire connected to the electrodes of a galvanic cell (or battery), forming an electric circuit, the cathode is positive and the anode ...

  9. Lithium cobalt oxide - Wikipedia

    en.wikipedia.org/wiki/Lithium_cobalt_oxide

    The cobalt atoms are formally in the +3 oxidation state, hence the IUPAC name lithium cobalt(III) oxide. Lithium cobalt oxide is a dark blue or bluish-gray crystalline solid, [ 4 ] and is commonly used in the positive electrodes of lithium-ion batteries .

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