Simulation & Measurement of the Current Density Distribution in Lithium-Ion Batteries by a Multi-Tab Cell Approach

S. V. Erhard, P. J. Osswald, P. Keil, E. Höffer, M. Haug, A. Noel, J. Wilhelm, B. Rieger, K. Schmidt, S. Kosch, F. M. Kindermann, F. Spingler, H. Kloust, T. Thoennessen, A. Rheinfeld, A. Jossen

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

A single-layered NMC/graphite pouch cell is investigated by means of differential local potential measurements during various operation scenarios. 44 tabs in total allow for a highly resolved potential measurement along the electrodes whilst the single layer configuration guarantees the absence of superimposed thermal gradients. By applying a multi-dimensional model framework to this cell, the current density and SOC distribution are analyzed quantitatively. The study is performed for four C-rates (0.1C, 0.5C, 1C, 2C) at three temperatures (5?C, 25?C, 40?C). The maximum potential drop as well the corresponding SOC deviation are characterized. The results indicate that cell inhomogeneity is positively coupled to temperature, i.e. the lower the temperature, the more uniform the electrodes will be utilized.

Original languageEnglish
Pages (from-to)A6324-A6333
JournalJournal of the Electrochemical Society
Volume164
Issue number1
DOIs
StatePublished - 2017

Fingerprint

Dive into the research topics of 'Simulation & Measurement of the Current Density Distribution in Lithium-Ion Batteries by a Multi-Tab Cell Approach'. Together they form a unique fingerprint.

Cite this