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Method for conducting nonlinear electrochemical impedance spectroscopy

Patent ·
OSTI ID:1183352
; ; ;

A method for conducting nonlinear electrochemical impedance spectroscopy. The method includes quantifying the nonlinear response of an electrochemical system by measuring higher-order current or voltage harmonics generated by moderate-amplitude sinusoidal current or voltage perturbations. The method involves acquisition of the response signal followed by time apodization and fast Fourier transformation of the data into the frequency domain, where the magnitude and phase of each harmonic signal can be readily quantified. The method can be implemented on a computer as a software program.

Research Organization:
University of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-02NT41566
Assignee:
University of Washington (Seattle, WA)
Patent Number(s):
9,046,463
Application Number:
11/408,594
OSTI ID:
1183352
Country of Publication:
United States
Language:
English

References (4)

Full-spectrum nonlinear response of a sinusoidally modulated rotating disk electrode journal June 2005
Nonlinear electrochemical impedance spectroscopy for solid oxide fuel cell cathode materials journal January 2006
Corrosion rate measurements by non-linear electrochemical impedance spectroscopy journal June 1995
Nonlinear Dynamics of Limiting Current in the Flow-Modulated Uniform-Injection Cell journal January 1997

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Related Subjects

25 ENERGY STORAGE
97 MATHEMATICS AND COMPUTING