A Multi-Channel Fast Impedance Spectroscopy Instrument Developed for Quality Assurance of Super-Capacitors

Conventional experimental methods for testing the performance of super-capacitors include measurement capacitance through charge and discharge, equivalent series resistance (ESR) self-discharge circuit model (ECM) by electrochemical impedance spectroscopy (EIS). However, are not suitable mass production line supercapacitors since they require a long time test several kinds different instrument. EIS is an attractive method to evaluate except that it takes single test. In this paper fast instrument quality assurance proposed. order reduce test, multi-sine sweeping used results analyzed extracting parameters ECM supercapacitors. The proposed developed have multi-channel further decrease with supercapacitor. It also presented as how extracted parameter values can be