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Analytical Approach for Evaluation of Lithium‐Ion Battery Cells
Author(s) -
Wagner Sebastian,
Oberland Alexander,
Turek Thomas
Publication year - 2016
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201600137
Subject(s) - dimensionless quantity , anode , battery (electricity) , lithium ion battery , materials science , electrochemistry , lithium (medication) , cathode , ion , electrode , analytical chemistry (journal) , chemical engineering , thermodynamics , chemistry , power (physics) , chromatography , engineering , physics , organic chemistry , medicine , endocrinology
A new method for evaluation of battery cells containing porous thin‐layer electrodes is developed. For this purpose, a typical concept of chemical reaction engineering to classify reactors by dimensionless characteristic values is used. Therefore, the system of equations describing the porous electrodes in a battery cell is transferred to dimensionless notation and corresponding dimensionless properties are developed. The required kinetic data are measured with the help of electrochemical test cells. A complete set of parameters for the description of the lithium‐ion battery is determined and the characteristic properties for the chosen example are calculated and analyzed. Finally, the performance of the anode and cathode using lithium manganese oxide and surface‐modified graphite as active materials is compared with the aid of the newly developed dimensionless parameters.