One-dimensional heterostructures of beta-nickel hydroxide nanoplates/electrospun carbon nanofibers: Controlled fabrication and high capacitive property

摘要: Abstract Ultra-long one-dimensional (1D) electrospun carbon nanofibers (CNFs) were obtained by carbonization treatment of polyacrylonitrile fibers at 1000 °C in nitrogen atmosphere. Using CNFs as templates, beta-nickel hydroxide (Ni(OH)2) nanoplates prepared on hydrothermal reactions. The contents Ni(OH)2 the 1D Ni(OH)2/CNFs heterostructures could be controlled adjusting concentrations Ni(Ac)2 precursors. electrode materials supercapacitors exhibited high specific capacitance compared with CNFs, pure nanoplates, and physical mixtures nanoplates. excellent properties ascribed to rapid electron transport along longitude direction pseudo-capacitance good electrical contacts between And, retention was over 90% after 500 cycles charge discharge a current density 12.5 A/g, suggesting their cycling stability. It expected that capacitive would greatly promote practical applications energy storage for supercapacitors.