Carbon nanotube-assisted electrodeposition. Part II: Superior pseudo-capacitive behavior of manganese oxide film electrodeposited at high current densities
作者: Ali EftekhariForoogh Molaei
作者单位: 1National Institute of Arts & Sciences, 411 Walnut Street, Green Cove Springs, Florida 32043-3443, United States
刊名: Journal of Power Sources, 2015, Vol.274 , pp.1315-1321
来源数据库: Elsevier Journal
DOI: 10.1016/j.jpowsour.2013.10.144
关键词: SupercapacitorManganese oxideCarbon nanotubesNanostructured filmElectrodepositionPseudo-capacitance
英文摘要: Abstract(#br)A practical approach for controlling the morphology and electrochemical properties of electroactive materials is proposed. In this study, manganese oxide films were galvanostatically deposited in the presence of a small amount of carbon nanotube (CNT). The resulting film cannot be considered as a CNT-based nanocomposite, as no CNT is detected by electron microscopy. However, the manganese oxide electrodeposited delivers an excellent pseudo-capacitive behavior to be used as a superior supercapacitor. The samples prepared by applying a current density of 3.0 mA cm −2 showed a specific capacitance of 280 F g −1 . As it seems that the capacitance of this electrode is related to the chemisorption of the alkali cation, an extremely high specific capacitance of 434 F g −1 was...
全文获取路径: Elsevier  (合作)
影响因子:4.675 (2012)