Browsing Physics by Author "Johnson, Alan T. Charlie"

Browsing Physics by Author "Johnson, Alan T. Charlie"

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  • Effect of conductive additives to gel electrolytes on activated carbon-based supercapacitors 
    Barzegar, Farshad; Dangbegnon, Julien K.; Bello, Abdulhakeem; Momodu, Damilola Y.; Johnson, Alan T. Charlie; Manyala, Ncholu I. (American Institute of Physics, 2015-09-24)
    This article is focused on polymer based gel electrolyte due to the fact that polymers are cheap and can be used to achieve extended potential window for improved energy density of the supercapacitor devices when compared ...
  • Growth of graphene underlayers by chemical vapor deposition 
    Fabiane, Mopeli; Khamlich, Saleh; Bello, Abdulhakeem; Dangbegnon, Julien K.; Momodu, Damilola Y.; Johnson, Alan T. Charlie; Manyala, Ncholu I. (American Institute of Physics, 2013-11)
    We present a simple and very convincing approach to visualizing that subsequent layers of graphene grow between the existing monolayer graphene and the copper catalyst in chemical vapor deposition (CVD). Graphene samples ...
  • Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors 
    Momodu, Damilola Y.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Barzegar, Farshad; Taghizadeh, Fatemeh; Fabiane, Mopeli; Johnson, Alan T. Charlie; Manyala, Ncholu I. (American Institute of Physics, 2014-09-17)
    In this paper, we demonstrate excellent pseudo-capacitance behavior of nickelaluminum double hydroxide microspheres (NiAl DHM) synthesized by a facile solvothermal technique using tertbutanol as a structure-directing ...
  • Structural and magnetic properties of ε-Fe1-xCoxSi thin films deposited via pulsed laser deposition 
    Manyala, Ncholu I.; Ngom, Balla D.; Beye, A.C.; Bucher, Remy; Maaza, Malik; Strydom, Andre M.; Forbes, Andrew; Johnson, Alan T. Charlie; DiTusa, J.F. (American Institute of Physics, 2009-08-06)
    We report pulsed laser deposition synthesis and characterization of polycrystalline Fe1-xbCoxSi thin films on Si (111). X-ray diffraction, transmission electron, and atomic force microscopies reveal films to be dense, very ...