Abstract
Electrochemical noise of a Li/SOCl2 primary battery was measured during discharge at a constant value resistor. The amplitude of the noise was found to be razing during discharge process. Power spectral density calculation method was used to analyze electrochemical noise. It was found that the slope of power spectral density frequency dependences increases with the battery discharging. The electrochemical impedance of the battery was measured during galvanostatic discharge and investigated using equivalent circuit analysis method. The correlations and some interactions between impedance components and electrochemical noise characteristics during battery discharge process were found and analyzed.
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