PreprintReviewVersion 1Preserved in Portico This version is not peer-reviewed
Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook
Version 1
: Received: 16 April 2024 / Approved: 17 April 2024 / Online: 17 April 2024 (13:31:12 CEST)
How to cite:
Kurzweil, P.; Scheuerpflig, W.; Schell, C.; Schottenbauer, J. Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook. Preprints2024, 2024041157. https://doi.org/10.20944/preprints202404.1157.v1
Kurzweil, P.; Scheuerpflig, W.; Schell, C.; Schottenbauer, J. Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook. Preprints 2024, 2024041157. https://doi.org/10.20944/preprints202404.1157.v1
Kurzweil, P.; Scheuerpflig, W.; Schell, C.; Schottenbauer, J. Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook. Preprints2024, 2024041157. https://doi.org/10.20944/preprints202404.1157.v1
APA Style
Kurzweil, P., Scheuerpflig, W., Schell, C., & Schottenbauer, J. (2024). Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook. Preprints. https://doi.org/10.20944/preprints202404.1157.v1
Chicago/Turabian Style
Kurzweil, P., Christian Schell and Josef Schottenbauer. 2024 "Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook" Preprints. https://doi.org/10.20944/preprints202404.1157.v1
Abstract
The current state-of-the-art does not provide a universal and rapid method of determining the state of health (SOH) of a battery or a supercapacitor without carefully examining the degradation of hundreds of full charge/discharge cycles. Lithium-ion batteries, sodium-ion batteries and supercapacitors of different cell chemistries were studied by impedance spectroscopy during lifetime tests. Faradaic and capacitive charge storage are distinguished by the relationships between stored electric charge and capacitance. For batteries, impedance spectroscopy is best applicable in the flat region of the voltage-charge curve. An approximately linear correlation between pseudocapacitance and Ah capacity is observed as long as overcharge and deep discharge are avoided. The correct calculation of quantities related to complex impedance and differential capacitance is outlined – which may also be useful as an introductory text and tutorial for newcomers to the field. Novel diagram types are proposed for the purpose of instant performance and failure diagnosis of batteries and supercapacitors.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
