Abstract
Electrochemical noise of a Li/MnO2 primary lithium battery was measured and analyzed during discharge process for the first time. The amplitude of the noise is shown to increase during battery discharge. The power spectral density frequency dependences of the noise are calculated for various stages of the battery discharge. The amplitudes of power spectral densities of the current noise nearly linear depend on the discharge voltage for frequencies below 1 Hz. The slope of the spectral power density frequency dependence of voltage noise changes from − 1 to − 2 during the battery discharge. It was found that the magnitude and slope of the power spectral density frequency dependence of the noise can be considered as a discharge criterion for a primary lithium battery.
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