Page 93 - Handbook of Battery Materials

2.6 Coin-Type Lithium Secondary Batteries 59

3.5
Temp : 23°C
3.0 1MΩ(ca.2.5mA)
Cell voltage (V) 2.5 20mA×15sec

2.0

1.5
≈
0
0 20 40 60 80 100
Discharge capacity (mAh)
Figure 2.44 Pulse characteristics of the Li–Al–CDMO cell (ML2430).
120 60°C
100
Cell capacity (mAh) 80 23°C −20°C

60
40

20
Fully charged condition
End voltage : 2.0V
0
0.1 0.3 0.5 1 3 5 10 30 50 100
Discharge load (kΩ)
Figure 2.45 Dependence of discharge capacity on load (ML2430).
5000
3000 Charge : 3.1V, 150Ω at 23°C
Discharge : 3mA at 23°C
1000
Cycles 500
300
100
50
30
10
0 20 40 60 80 100
Discharge depth (%)
Figure 2.46 Cycling performance of the Li–Al–CDMO cell
(ML2430). The number of 100% charge–discharge cycles is
calculated until the capacity drops to 100% of the nominal
value (end voltage 2.0 V). The number of 5, 20, and 60%
charge–discharge cycles is calculated until an end voltage of
2.0 V.