Investigation of the Coulombic Efficiency and the Superior Differential Capacity Degradation Analysis

Daniel Schurholz; Bernhard Schweighofer; Markus Neumayer; Hannes Wegleiter

doi:10.1109/LSENS.2023.3307107

Investigation of the Coulombic Efficiency and the Superior Differential Capacity Degradation Analysis

Daniel Schurholz^*, Bernhard Schweighofer, Markus Neumayer, Hannes Wegleiter

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Elektrische Messtechnik und Sensorik (4530)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

The Coulombic efficiency (CE) measurement is a promising method to quickly determine the potential lifetime of a battery cell. It will be demonstrated that high-precision measurements are required to determine the CE of modern cells. For this purpose, a comparison of our in-house developed precision hardware and two commercially available hardwares is performed. Furthermore, it is shown by means of a model that the CE can be misleading when it comes to the determination of cell aging. As a better alternative, the (conventional) differential capacity analysis (C) is presented and the difference compared to the CE is demonstrated by a precision measurement.

Originalsprache	englisch
Aufsatznummer	6006504
Fachzeitschrift	IEEE Sensors Letters
Jahrgang	7
Ausgabenummer	10
DOIs	https://doi.org/10.1109/LSENS.2023.3307107
Publikationsstatus	Veröffentlicht - 1 Okt. 2023

ASJC Scopus subject areas

Instrumentierung
Elektrotechnik und Elektronik

UN SDGs

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abstract = "The Coulombic efficiency (CE) measurement is a promising method to quickly determine the potential lifetime of a battery cell. It will be demonstrated that high-precision measurements are required to determine the CE of modern cells. For this purpose, a comparison of our in-house developed precision hardware and two commercially available hardwares is performed. Furthermore, it is shown by means of a model that the CE can be misleading when it comes to the determination of cell aging. As a better alternative, the (conventional) differential capacity analysis (C) is presented and the difference compared to the CE is demonstrated by a precision measurement.",

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Investigation of the Coulombic Efficiency and the Superior Differential Capacity Degradation Analysis

Abstract

ASJC Scopus subject areas

UN SDGs

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