Abstract
Electrochemical performance of AgO cathodes containing six different binders at high rate discharge are investigated in detail. Polytetrafluoroethylene, Polyvinylalcohol, polyvinylidene fluoride, polyacrylonitrile, carboxymethyl cellulose (CMC) and polyvinylpyrrolidone (PVP) are used as binders for the AgO cathodes. Electrochemical performances of prepared AgO cathodes are investigated by a galvanostatic discharge test, cyclic voltammetry and electrochemical impedance spectroscopy and the field emission scanning electron microscopy (FESEM). The galvanostatic discharge tests show that the capacity of AgO cathodes based on PVP and CMC binders (380 mAh g−1 and 360 mAh g−1, respectively) are much higher than that other prepared cathodes. The FESEM images of AgO cathodes show that, the CMC cathode have poor physical strength, while PVP binder could maintain integrity of cathodes during discharge test. Also, a superior reduction peak current (−0.89 A) and minimum ohmic polarization confirm that the AgO cathode based on PVP has the highest electrochemical activity.
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