Effect of functionalized graphene on performance of magnesium/air battery. (29th May 2019)

• Record Type: Journal Article
• Authors: Ma, Jingling; Qin, Conghui; Li, Yaqiong; Ren, Fengzhang; Liu, Yong; Wang, Guangxin
• Is Part Of: Materials research express. Volume 6:Number 8(2019)
• Publication Date: 2019-05-29
• Subjects: magnesium anode -- air battery -- corrosion -- graphene; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab23bd
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: In order to decrease the corrosion rate of magnesium anode and increase the discharge property of magnesium/air battery, functionalized graphene, poly (sodium 4-styrenesulfonate)/reduced graphene oxide, and reduced graphene oxide/Mn3 O4 nanometer composite are prepared successfully. The magnesium/air batteries are researched by addition of poly (sodium 4-styrenesulfonate)/reduced graphene oxide in NaCl electrolyte and reduced graphene oxide/Mn3 O4 nanometer composite as cathode catalyst. The structure and morphology of the poly (sodium 4-styrenesulfonate)/reduced graphene oxide and the reduced graphene oxide/Mn3 O4 nanometer composite are tested by x-ray diffraction, scanning electron microscope and fourier transform infrared spectrophotometer. The magnesium/air battery with the functionalized graphene is found to get high energy density of 1279 Wh kg −1 and anode utilization of 83%, which is higher than that of in NaCl solution and commercial air cathode (935 Wh kg −1 and 47%). The magnesium/air battery based on functionalized graphene shows higher electrochemical activity and anode utilization.