Method and System for Measurement of Impedance of Electrochemical Devices

Research output: Patent


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.
Original languageAmerican English
Patent number11,733,190 B2
Filing date22/08/23
StatePublished - 2023

NREL Publication Number

  • NREL/PT-5900-87312


  • electrical impedance
  • electrochemical storage
  • variable impedance


Dive into the research topics of 'Method and System for Measurement of Impedance of Electrochemical Devices'. Together they form a unique fingerprint.

Cite this