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Evaluation of lithium alloy anode materials for Li-TiS2 cellsA study was performed to select candidate lithium alloy anode materials and establish selection criteria. Some of the selected alloy materials were evaluated for their electrochemical properties and performance. This paper describes the criteria for the selection of alloys and the findings of the studies. Li-Si and Li-Cd alloys have been found to be unstable in the EC+2-MeTHF-based electrolyte. The Li-Al alloy system was found to be promising among the alloy systems studied in view of its stability and reversibility. Unfortunately, the large volume changes of LiAl alloys during charge/discharge cycling cause considerable 'exfoliation' of its active mass. This paper also describes ways how to address this problem. The rate of disintegration of this anode would probably be surpressed by the presence of an inert solid solution or a uniform distribution of precipitates within the grains of the active mass. It was discovered that the addition of a small quantity of Mn may improve the mechanical properties of LiAl. In an attempt to reduce the Li-Al alloy vs. Li voltage, it was observed that LiAlPb(0.1)Cd(0.3) material can be cycled at 1.5 mA/sq cm without exfoliation of the active mass.
Document ID
19930053370
Document Type
Conference Proceedings
Authors
Huang, C.-K. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Subbarao, S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shen, D. H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Deligiannis, F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Attia, A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Halpert, G. (JPL Pasadena, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Primary and secondary lithium batteries (A93-37355 14-25)
Subject Category
ENERGY PRODUCTION AND CONVERSION
Distribution Limits
Public
Copyright
Other