Abstract
MnO2/C composites were synthesized in a microwave oven using the activated carbon as a carrier, manganese sulfate as manganese source, ammonium persulfate as an oxidant, ammonium sulfate as conductive agent. The effects of activated carbon and ammonium sulfate concentration on the MnO2/C composite crystalstructure and assembly of the zinc-air battery were studied. The results show that the mixed crystal MnO2/C has the best catalytic oxygen reduction effect. The reaction changes from chemical reaction to electrochemical reaction because of activated carbon. The power of MnO2/C air battery is increased first and then decreased with the active carbon concentration increased. When the carbon concentration was 30gL-1, the power reaches a maximum value. With the ammonium sulfate concentration increases the battery energy is first increased and then decreased. The power reaches a maximum value as the concentration of ammonium sulfate is 0.25molL-1.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
