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

Autor: Woojin Choi, Mohammad Nadeem, Seung June Lee, Asad U. Khan, Farhan Farooq
Rok vydání: 2021
Předmět:
Production line
Control and Optimization
Materials science
Energy Engineering and Power Technology
02 engineering and technology
lcsh:Technology
digital lock-in amplifier
Capacitance
law.invention
equivalent circuit analysis
law
0202 electrical engineering
electronic engineering
information engineering
Electronic engineering
Electrical and Electronic Engineering
Engineering (miscellaneous)
Supercapacitor
super-capacitors
Equivalent series resistance
lcsh:T
Renewable Energy
Sustainability and the Environment
business.industry
020208 electrical & electronic engineering
multi-channel
021001 nanoscience & nanotechnology
Dielectric spectroscopy
Capacitor
electrochemical impedance spectroscopy
Equivalent circuit
0210 nano-technology
business
Quality assurance
multi sine super imposed method
Energy (miscellaneous)
Zdroj: Energies
Volume 14
Issue 4
Energies, Vol 14, Iss 1139, p 1139 (2021)
ISSN: 1996-1073
DOI: 10.3390/en14041139
Popis: Conventional experimental methods for testing the performance of super-capacitors include the measurement of capacitance through charge and discharge, measurement of equivalent series resistance (ESR) and measurement of self-discharge and the equivalent circuit model (ECM) by electrochemical impedance spectroscopy (EIS). However, the methods are not suitable for the mass production line of supercapacitors since they require a long time for the test and several kinds of different instrument. EIS is an attractive method to evaluate the performance of supercapacitors except that it takes a long time for a single test. In this paper a fast EIS instrument suitable for quality assurance for the mass production of supercapacitors is proposed. In order to reduce the time for the test, a multi-sine sweeping method is used for the EIS test and the results are analyzed by extracting the parameters of the ECM to evaluate the performance of the supercapacitors. The proposed instrument is developed to have multi-channel to further decrease the time for the test with a supercapacitor. It is also presented as to how the extracted parameter values of the ECM can be used to evaluate the performance of the supercapacitor.
Databáze: OpenAIRE
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