Method and system for measurement of impedance of electrochemical devices
Abstract
The present disclosure provides methods for determining impedance of an electrochemical device by electrically connecting a variable impedance in parallel with the electrochemical device; electrically connecting a power supply to the electrochemical device, the power supply generating a power supply current; modulating a current through the variable impedance; measuring a stack current flowing through the electrochemical device; measuring, at the electrochemical device, a voltage across at least a portion of the electrochemical device; and calculating, based on the measured stack current and the measured voltage, the impedance of the electrochemical device. Systems for performing such methods are also provided.
- Inventors:
- Issue Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 2222210
- Patent Number(s):
- 11733190
- Application Number:
- 17/750,517
- Assignee:
- Alliance for Sustainable Energy, LLC (Golden, CO)
- DOE Contract Number:
- AC36-08GO28308
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 05/23/2022
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Klein, Jr., Walter Ellis. Method and system for measurement of impedance of electrochemical devices. United States: N. p., 2023.
Web.
Klein, Jr., Walter Ellis. Method and system for measurement of impedance of electrochemical devices. United States.
Klein, Jr., Walter Ellis. Tue .
"Method and system for measurement of impedance of electrochemical devices". United States. https://www.osti.gov/servlets/purl/2222210.
@article{osti_2222210,
title = {Method and system for measurement of impedance of electrochemical devices},
author = {Klein, Jr., Walter Ellis},
abstractNote = {The present disclosure provides methods for determining impedance of an electrochemical device by electrically connecting a variable impedance in parallel with the electrochemical device; electrically connecting a power supply to the electrochemical device, the power supply generating a power supply current; modulating a current through the variable impedance; measuring a stack current flowing through the electrochemical device; measuring, at the electrochemical device, a voltage across at least a portion of the electrochemical device; and calculating, based on the measured stack current and the measured voltage, the impedance of the electrochemical device. Systems for performing such methods are also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {8}
}
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