I think this is a good work of my life that i ever done. I did a lot of work in chemistry but this one is more impressive for me even though i can't fulfill my all exception in here.I personally try to present all related topic that is important to know when someone want to work in this section. Manganese dioxide is one of the important oxide for preparation of battery. I try my best to prepare nano-size manganese dioxide for the preparation of better quality of batteries.