Method and apparatus for extracting entropy of electrochemical device using heat generation in response to electrical input signal

摘要

A method for extracting entropy of an electrochemical device, comprising: applying a current including a frequency component to the electrochemical device; Measuring heat or temperature change of the electrochemical device generated by the applied current; Separating the frequency component of the measured heat or temperature change, and specifying a frequency component that becomes one or two times the applied current; Separating a heating component consisting of resistance heating and entropy heating from the specified frequency component and temperature change; There is provided a method for extracting entropy of an electrochemical device comprising the step of extracting the entropy of the electrochemical device through a combination of the ratio of the exothermic components and the absolute magnitude of the resistance heating.