Nitrogen-doped, FeNi alloy nanoparticle-decorated graphene as an efficient and stable electrode for electrochemical supercapacitors in acid medium

作者：El Deen Ahmed G; El Newehy Mohamed^*; Kim Cheol Sang; Barakat Nasser A M

来源：Nanoscale Research Letters, 2015, 10(1): 104.

DOI：10.1186/s11671-015-0778-6

• FeNi alloy
• Graphene
• Electrochemical supercapacitors
• Specific capacitance

Nitrogen-doped graphene decorated by iron-nickel alloy is introduced as a promising electrode material for supercapacitors. Compared to pristine and Ni-decorated graphene, in acid media, the introduced electrode revealed excellent specific capacitance as the corresponding specific capacitance was multiplied around ten times with capacity retention maintained at 94.9% for 1,000 cycles. Briefly, iron acetate, nickel acetate, urea, and graphene oxide were ultrasonicated and subjected to MW heating and then sintered with melanin in Ar. The introduced N-doped FeNi@Gr exhibits remarkable electrochemical behavior with long-term stability.

• 出版日期2015-3-1