Nondestructive state-of-charge assessment of Lithium-ion batteries using quantitative ultrasound spectroscopy

The ability to detect and quantify the state of charge (SoC) of lithium-ion (Li-ion) batteries - the most common energy sources for portable devices - using fast and nondestructive evaluation techniques is crucial for the technology. Ten factory-new 18650 batteries were imaged at 100% and 0% SoC using a Vantage-256 system (Verasonics, Inc.) equipped with a 5-MHz and 64-element ultrasound array (Im...