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Total harmonic distortion: In-situ diagnostics of pressure fluctuations for anion exchange membrane water electrolysis
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DOI：10.1016/j.elecom.2026.108184.png)
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Abstract
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• THD spectroscopy detects pressure fluctuations in AEMWE with high sensitivity. • Anode pressure rise suppresses THD; cathode pressure rise elevates THD. • Divergent THD trends reveal asymmetric nonlinear electrode responses to pressure. • Real-time THD monitoring enables rapid, in-situ diagnosis of pressure changes. • Coupled kinetic-mass transport model validates experimental THD pressure dependence.
Keywords:
Anion exchange membrane water electrolysis
Electrochemical impedance spectroscopy
Total harmonic distortion spectroscopy
Nonlinear spectroscopy analysis
Pressure diagnosis
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