Page 177 - Handbook of Battery Materials

146 4 Electrochemistry of Manganese Oxides

4.0 4.0
(Id=250 mA)
3.5 3.5
Cell Voltage (v) 3.0 Cell Voltage (v) 3.0

2.5
2.5
2.0 2.0
2 1.5.25A −30°C −25°C 0°C 25°C55°C
1.5 1.5
0 10203040 50 60 70 80 90 100 0 10203040 50 60 70 80 90 100110
% of Nominal Capacity % of Nominal Capacity
GSM Pulse Discharge Mode
800 4.0
100% DOD 3.5 Charge-Discharge
Cell Capacity (mAh) 700 1.3A 50% DOD Cell Voltage (v) 3.0
600
500
400
2.5
300
0.2A
200
100 0.6ms 4.2ms 0.02A 2.0
4 min 18 min
0 1.5
0 120 240 360 480 600 0 10203040 50 60 70 80 90 100
Cycle Number % of Nominal Capacity
Figure 4.21 Cell performance of LiMnO 2 oxide. The anode is metallic Li [25].

2000

1000
dQ/dE (mAh/V) 0 a b

−1000 3.3 V 4.5 V

−2000

3.0 3.5 4.0 4.5 5.0
Figure 4.22 Cyclic voltammogram of LiMn 2 O 4 .