阳极
锂(药物)
电池(电)
阴极
离子
锂离子电池
错误检测和纠正
电镀(地质)
电极
计算机科学
材料科学
算法
化学
电气工程
物理
功率(物理)
工程类
热力学
医学
物理化学
有机化学
地球物理学
内分泌学
作者
Daniel Rutz,Felix Brauchle,Philipp Stehle,Ingolf Bauer,Timo Jacob
标识
DOI:10.1002/celc.202300216
摘要
Abstract Reference electrodes (REs) play a crucial role in the accurate assessment and control of battery potentials, but their confidence is overestimated. Researchers have tracked the source of the error to the RE design that blocks the lithium‐ion path between anode and cathode. These errors or potential deviations are mostly modeled or less‐frequently estimated after observing Li plating post‐mortem. This is the first study to showcase an experimental method that allows a more precise error quantification in‐operando of a RE. The key idea is to relate the error‐affected reference potential to an unaffected quantity, such as the cell dilatation. Although our experimental setups are special, this approach can also be applied to different setups and REs. Using the presented method, we provoked Li plating in NMC811/graphite pouch cells and determined the potential deviation of our perforated RE to be 12 mV under fast charging conditions. In contrast to previous studies, we found the error to be positive, offering a new explanation of the error mechanism of REs.
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