Cells discharge characteristics

Fig. 24. Silver—hydrogen cell discharge characteristics where ( ) represents a 0.5 h rate at 4 A or 80 mA/cm (—...

Figure 31.31 shows typical capacity characteristics for high-rate and low-rate silver-zinc cells. Discharge characteristics at various rates (Figure 31.31(a)) and the effect of temperature (Figure 31.31(b)) on the discharge are also shown. 

Figure 51.38 Typical cell discharge characteristics at 2VC of Eagle Richer VNC vented nickel-cadmium aircraft batteries (Courtesy of Eagle Richer)...

Fig. 13. Charge—discharge characteristics of a nominal 140-A-h silver—iron cell where the charge (-) is at 25 A for 8 h, A represents a 0.25 A float...

Figure 4. Comparison between the discharge characteristics of newly developed and conventional alkaline-manganese cells (load 7.5 Q temperature 20 °C)...

Figure 9. Discharge characteristics of an Ni-Cd battery at various discharge currents (cell type 1200SC)...

Charge-discharge capacity/mAh Figure 20. Charge-discharge characteristics of an Ni—MH battery (cell type AA). 

Figure 22. Discharge characteristics of an Ni-MH battery at various rates (cell type 4/3A).

Figure 43. Discharge characteristics of the Li-Al-CDMO cell (ML2430).

Figure 64. Discharge characteristics of an LiCo02 / coke cell.

Figure 66. Discharge characteristics of the LiCo02 -natural graphite cell.

Figure 4. Discharge characteristics of RAM AA cells when cycled at 20 °C. The cells are discharged for 4 h per day at 4 Q, and charged overnight with a constant voltage charger at 1.7 V.

Metal-air cells are developed with air gas-diffusion cathodes and Mg-anodes. Non-aggressive NaCl-solution is used as electrolyte. Carbon based catalysts for the oxygen reduction are selected and tested in the air gas-diffusion electrodes. Various Mg-alloys are tested as anodes. The V-A, power and discharge characteristics of the Mg-air cells are investigated. 

Magnesium-air air cells with NaCl-electrolyte were developed and investigated. The current-voltage and the discharge characteristics of the cells with were studied. Air gas-diffusion electrodes suitable for operation in NaCl-electrolytes were designed. Various carbon-based catalysts for the electrochemical reduction were tested in these air electrodes. Magnesium alloys suitable for use as anodes in Mg-air cells were found. 

Fig. 11.10 Discharge characteristics of the WGL Model 755 Li/Ij-PVP cell at different constant loads and 37 °C (Shahi, Wagner and Owens, 1983).

Other primaries have been proposed (30,31). Of all these, the most advanced is the Li-SOz cell. The discharge characteristics of the Li-S02 battery system are discussed in (32a) comparison was made with the other systems (32b). With a practical ED of 290 Wh/kg at room temperature, it can operate down to -53 C with ED = 55 Wh/kg. The SO2 is dissolved in acetonitrile + propylene carbonate in this case. 

A number of empirical equations have been suggested (e.g. Shepherd formulae) for certain types of cell which give cell voltage as a function of discharge depth, current, etc., once a number of constants characteristic of the cell discharge have been evaluated. 

Fig. 3.25 Discharge characteristics of 1 Ah zinc-mercuric oxide button cell under continuous load at room temperature...

Fig. 3. 27 Discharge characteristics of 75 mAh zinc-silver oxide hearing aid cell under continuous load at room temperature. (By kind permission of P. Ruetschi, Plenary lecture, ISE. Venice. 1980.)...

Fig. 4.12 Discharge characteristics of a spiral wound cylindrical cell (17 mm diameter X 33.5 mm height) based on the Li-(CFT)(I couple, at 20 pA over a wide range of temperatures. (By permission of National/Panasonic.)...

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