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Direct ammonia‐oxygen or air cells were operated between 25° and 140°C with aqueous potassium hydroxide as electrolyte and with Teflon‐bonded electrodes containing either unsupported platinum black or platinum supported on graphite. The effect of platinum on the performance of ammonia, oxygen, and air electrodes was investigated. Power densities of 50 mw/cm 2 at 0.5v (IR‐included) were achieved in ammonia‐air cells at 120°C with only 2.5 mg Pt/cm 2 on each electrode.
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Simons et al. (1969) studied this question.
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