Ultrafine manganese dioxide was prepared by oxidation precipitation with potassium persulfate as oxidative reagent under the control of reaction temperature and time.The resulting manganese dioxide characterized by XR...Ultrafine manganese dioxide was prepared by oxidation precipitation with potassium persulfate as oxidative reagent under the control of reaction temperature and time.The resulting manganese dioxide characterized by XRD,TEM,and SEM tests is γMnO2 with distinguished microstructures and their diameters generally range from 20 to 80 nm.By using electrochemical technique,its specific capacitance reaches over 150F/g.The manganese oxide maintains high utilization at high rates of chargedischarge.Its specific capacitance did not change significantly in over a thousand cycles.展开更多
文摘Ultrafine manganese dioxide was prepared by oxidation precipitation with potassium persulfate as oxidative reagent under the control of reaction temperature and time.The resulting manganese dioxide characterized by XRD,TEM,and SEM tests is γMnO2 with distinguished microstructures and their diameters generally range from 20 to 80 nm.By using electrochemical technique,its specific capacitance reaches over 150F/g.The manganese oxide maintains high utilization at high rates of chargedischarge.Its specific capacitance did not change significantly in over a thousand cycles.
