Page 377 - Lindens Handbook of Batteries

14.42 PriMAry BATTerieS

3.80
3.60
3.40
3.20
3.00
2.80
2.60
2.40 0.49M LiGaCl 4
2.20
Voltage, V 2.00 –80°C
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
Discharge capacity, Ah
FIGURE 14.33 Capacity in ampere-hours for a 1 A discharge at -80°C for Mars Microprobe battery. (Courtesy
of Yardney Technical Products, Inc.)

TABLE 14.16 results of Air Gun Test on Mars
Microprobe Battery

Post-impact battery discharge
Output on profile 0.515 Ah
Additional output at -80°C 0.157 Ah
Total output 0.724 Ah
Major tasks
Calib. 9Ω -60°C 9.5 V
Drill 136Ω, -60°C 11.7 V
H O 16Ω, -60°C 10.5 V
2
High X-mit 9Ω, -60°C 9.7 V
X-mit 59Ω, -80°C 7.6 V

14.7 LITHIUM/OXYCHLORIDE BATTERIES

The lithium/sulfuryl chloride (Li/SO Cl ) battery is the other oxychloride that has been used for primary
2
2
lithium batteries. The Li/SO Cl battery has three potential advantages over the Li/SOCl battery:
2
2
2
1. A higher energy density as a result of a higher operating voltage (3.9 V open-circuit voltage) as
shown in Fig. 14.3 and less solid product formation (which may block the cathode) during the
discharge.