CORROSION RESEARCH CENTER
Sensors and Batteries
|
|
Development and Evaluation of Vanadium Pentoxide in a Composite
Cathode
Leland Manhart
Supported by ARPA
This work focuses on using vanadium pentoxide xerogel (XRG) as active material in a
composite cathode for a high energy rechargeable lithium battery. Vanadium pentoxide
material offers a high specific capacity (560 Ah/kg) and a high energy density (1200
Wh/kg). These capacity and energy densities were obtained from thin film technology.
From this the goal of this project is to evaluate the performance of the XRG composite
cathode in coin cell technology. Numerous parameters are being studied to optimize the
performance of these cells, these include: cathode process, cathode formulation, electrode
morphology, cell assembling and electrolyte. Structural characterization of the material has
also been done by XRD (x-ray diffraction) and by SEM.
GOALS:
To realize the high energy performance obtained from spin coated XRG films in aa
practical coin cell.
To study the effect of various cathode parameters have on the performance of the
XRG/Li and XRG/LiC6 cells.
To improve on the capacity, cycle life and energy density of the cells by variations in
the parameters listed above.
RECENT PUBLICATIONS
L. Manhart, B.B. Owens, W.H. Smyrl, T. Staachovaik and S. Megahed, High
Specific Capacity Cathodes, Midwest Battery Workshop Proceedings, Illinois Institute of
Technology, April 15, 1997.
J. Guo, S. Passerini, B.B. Owens, W.H. Smyrl, Performance of
V2O5 Xerogel
Composite Cathodes in Rechargeable Lithium Batteries, J. Electroch. Soc. 143, 3473
(1996).
H.K. Park and W.H. Smyrl, J. Electroch. Soc. 141, L25 (1994).
Figure (This figure will be downloaded into Acrobat
Reader.)
TABLE OF CONTENTS
ABOUT THE CORROSION RESEARCH CENTER
CRC FACULTY
CRC RESEARCHERS AND STAFF DIRECTORY
CRC AREAS OF RESEARCH
CURRENT NEWS
CRC Web Page Creator
URL: http://www.cems.umn.edu/crc/Development_Manhart.html
©Corrosion Research Center
Last Updated: October 20, 1997