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Olivine electrode engineering impact on the electrochemical performance of lithium-ion batteries

Published online by Cambridge University Press:  31 January 2011

Gary Henriksen
Affiliation:
Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439
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Abstract

High energy and power density lithium iron phosphate was studied for hybrid electric vehicle applications. This work addresses the effects of porosity in a composite electrode using a four-point probe resistivity analyzer, galvanostatic cycling, and electrochemical impedance spectroscopy (EIS). The four-point probe result indicates that the porosity of composite electrode affects the electronic conductivity significantly. This effect is also observed from the cell's pulse current discharge performance. Compared to the direct current (dc) methods used, the EIS data are more sensitive to electrode porosity, especially for electrodes with low porosity values.

Type
Articles
Copyright
Copyright © Materials Research Society 2010

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References

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