@article{Zhao:2019:10.1149/2.0011902jes,
author = {Zhao, Y and Spingler, FB and Patel, Y and Offer, GJ and Jossen, A},
doi = {10.1149/2.0011902jes},
journal = {Journal of The Electrochemical Society},
pages = {A27--A34},
title = {Localized swelling inhomogeneity detection in lithium ion cells using multi-dimensional laser scanning},
url = {http://dx.doi.org/10.1149/2.0011902jes},
volume = {166},
year = {2019}
}

Download

TY  - JOUR
AB  - The safety, performance and lifetime of lithium-ion cells are critical for the acceptance of electric vehicles (EVs) but the detection of cell quality issues non-destructively is difficult. In this work, we demonstrate the use of a multi-dimensional laser scanning method to detect local inhomogeneities. Commercially available cells with Nickel Cobalt Manganese (NMC) cathode are cycled at various charge and discharge rates, while 2D battery displacement measurements are taken using the laser scanning system. Significant local swelling points are found on the cell during the discharge phase, the magnitude of swelling can be up to 2% of the cell thickness. The results show that the swelling can be aggravated by a combination of slow charge rate and fast discharge rate. Disassembly of the cells shows that the swelling points are matched with the location of ‘adhesive-like’ material found on the electrode surfaces. Scanning Electron Microscope (SEM) images show that the material is potentially blocking the electrodes and separators at these locations. We therefore present laser-scanning displacement as a valuable tool for defect/inhomogeneity detection.
AU  - Zhao,Y
AU  - Spingler,FB
AU  - Patel,Y
AU  - Offer,GJ
AU  - Jossen,A
DO  - 10.1149/2.0011902jes
EP  - 34
PY  - 2019///
SN  - 1945-7111
SP  - 27
TI  - Localized swelling inhomogeneity detection in lithium ion cells using multi-dimensional laser scanning
T2  - Journal of The Electrochemical Society
UR  - http://dx.doi.org/10.1149/2.0011902jes
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000455039000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/66589
VL  - 166
ER  - 

Download