Page 366 - Lindens Handbook of Batteries
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LiTHiUM PriMAry BATTerieS 14.31
Capacity vs. current
20.0
18.0 –40°C
25°C
16.0
50°C
14.0
80°C
Ah 12.0
10.0
8.0
6.0
0°C
–30°C
4.0
0.1 1 10
mA
FIGURE 14.18 Performance characteristics of high-capacity cylindrical bobbin D-size
batteries as a function of drain rate at various temperatures. 24
3.0
Voltage, V 2.0 100 mA
17 mA 200 mA
1.0
0
2 4 6 8 10 12 14
Capacity, Ah
FIGURE 14.19 Discharge characteristics of Li/SOCl cylindrical D-size bobbin battery at
2
145°C. 25
The long shelf life of the Li/SOCl battery is due to the stability of the lithium anode in contact with
2
the electrolyte, as a result of a protective LiCl film that forms on the lithium surface. The long shelf
life can also be attributed to the stability of other cell components. For example, the can and cover are
cathodically protected by the lithium, and the carbon, stainless-steel collector, and glass separator are all
inert in the electrolyte. Figure 14.22 shows the loss of capacity after 3 years at 20°C, a loss of about 1 to
2% per year. Storage at 70°C results in a capacity loss of about 5% per year. Cells should preferably be
stored in an upright position; storage on the side or upside-down may result in higher capacity loss.
