A New Methodology for Evaluating the High-Power Behavior of a Li-ion Battery Cell
2010 (English)In: Rechargeable Lithium-Ion Batteries, Electrochemical Society, 2010, no 36, 253-262 p.Conference paper (Refereed)
The internal sources of polarization are calculated and investigated for a graphite (MAG-10) vertical bar 1.2 M LiPF6 in EC: EMC (3: 7 by weight) vertical bar LiNi0.8Co0.15Al0.05O2 battery cell at SOC 40 and 80. A method is developed where the total polarization of the battery cell is split up into six polarizing subprocesses. The method involves two steps; the solving of an experimentally validated model that describes the dynamics of the battery cell during e. g. a hybrid pulse power characterization test and the use of the modeled cell's local potential, concentration profiles and local current density to calculate the internal losses. With this analysis the sources of polarization during an EUCAR test cycle are determined. The major factor limiting the performance is associated with the mass transport in the electrolyte.
Place, publisher, year, edition, pages
Electrochemical Society, 2010. no 36, 253-262 p.
, ECS Transactions, ISSN 1938-5862 ; 25
Positive Electrodes, Porous-Electrodes, Insertion Cell, Lithium, Impedance, Discharge, Fade, Tool
IdentifiersURN: urn:nbn:se:kth:diva-138109DOI: 10.1149/1.3393861ISI: 000313480900026ScopusID: 2-s2.0-79952775962ISBN: 978-1-56677-810-7OAI: oai:DiVA.org:kth-138109DiVA: diva2:680459
Symposium on Rechargeable Lithium and Lithium-Ion Batteries Held During the 216th Meeting of the Electrochemical-Society (ECS), OCT 04-09, 2009, Vienna, Austria
QC 201312182013-12-182013-12-182013-12-18Bibliographically approved