Capacity fade detection in lithium-ion batteries using non-linear frequency response analysis (NFRA) under multiple open-circuit voltages (OCVs)

Danial Sarwar,Chongming Wang,Tazdin Amietszajew,Cheng Zhang,Chitta Saha,Oliver Curnick

Electrochemistry Communications（2022）

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摘要

•Capacity loss detection using Total harmonic distortion under multiple SOCs.•Applicability of Nonlinear frequency analysis on commercial lithium-ion cells.•Harmonic distortions are dependent on SOC below 1 Hz.•Aging quantification for all SOCs under the range of 10 Hz–150 Hz.•Different harmonic responses for the cells aged at different temperatures.

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关键词

Lithium-ion battery,Nonlinear frequency response analysis,State of health,Harmonic distortions

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