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release time:2024-03-11 Hits: Popular:AG11 battery
The theory of bipolar sulphate proves that lead sulphate is produced after the positive and negative electrodes of the battery are discharged, and then converted into PbO2 and Pb respectively after charging. To know how much active material produces how much electricity, and how much electricity is used to convert lead sulfate into active material, Faraday's law is calculated. The amount of electricity required or produced for any substance with 1 gram equivalent generated or consumed on the electrode is 96500C (Library [Ren]). Battery power is expressed in ampere-hours. The relationship between Ansy and Faraday is as follows:
1F=96500C=96500÷3600=26.8 (Ah)
How many grams of material are required per ampere-hour, which leads to the electrochemical equivalent, expressed in the formula:
&; nbs p; Electrochemical equivalent = g equivalent /26.8 (g/Ah)
Negative electrode: Pb loses 2 electrons, from zero valence to 2 valence, Pb gram equivalent is 207.2/2=103.6, electrochemical equivalent is 103.6/26.8=3.87 (g/Ah).
Positive electrode: PbO2 gets 2 electrons, from 4 valence to 2 valence, PbO2 gram equivalent 239/2=119.6, electrochemical equivalent of 119.6/26.8=4.46 (g/Ah).
The electrochemical equivalent calculated above is only a theoretical value. The utilization rate of the battery in actual use is low, usually about 40%, up to 55~60%, a considerable part of the power is not played, improving the utilization rate of the battery is a big problem of manufacturing technology.
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