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ENERGIZERBATTERYMANUFACTURING
VERSION1.2
Figure2:RuntimeforEquivalentVolumeAAAABatteriesin50mWDevices
0
10
20
30
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50
A
AAA Alkaline Lithium Ion ZAP PP355
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14
38
The highenergy densityof Zinc Airis made possibleby using athin air electrode where thecathode
reaction takesplace and by usingatmospheric oxygen asthe cathode reactant.Theresult is greater
internalvolumeforzinc,theactiveanodematerial.Morezinctranslatesintolongerruntimein
similar
overall volume.Figure 3 demonstrates the higher energy density of Zinc Air compared to other
consumerbattery systems.Thechartontheleftdi splaysvolumetricenergydensityinunits ofWh/L,
andthechartontherightshows gravimetricenergydensityinunitsofWh/kg.Thisdataisbased
onthe
volumeofaAAsizedbatteryforallsystemsandacontinuous50mAcurrentdraintoa0.9voltcutoff.
Figure3:ComparisonofZincAirversusOtherBatteryTechnologies
156
450
565
396
371
522
343
890
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100
200
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400
500
600
700
800
900
1000
Carbon
Zinc
Alkaline Lithium LiIon LithiumIon
Polymer
Lithium
MnO2
NiMH Zinc
Air
EnergyDensity(Wh/L)
87
151
307
153
171
218
95
345
0
50
100
150
200
250
300
350
400
Carbon
Zinc
Alkaline Lithium LiIon LithiumIon
Polymer
Lithium
MnO2
NiMH Zinc
Air
SpecificEnergy(Wh/kg)
Energizer Zinc AirPrismatic batteries have anoperating voltage similarto Alkaline, whichis between
1.10 and 1.30 volts depending on the drain rate of the device.The discharge profile however is
relatively flat similar to rechargeable Nickel Metal Hydride batteries.Figure 4 contains examples of
dischargecurvesforZinc
Air,Alkaline,NickelMetalHydride,andLithiumIronDisulfidebatteries.Even
thoughtheZincAirPP355batteryhasthesameexternalvolumeastheAAAAbattery,itdeliversupto
3Xtheruntimeata50mWdischarge.