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Volume 7
Innovative Energy & Research
ISSN: 2576-1463
Advanced Energy Materials 2018
August 13-14, 2018
August 13-14, 2018 | Dublin, Ireland
20
th
International Conference on
Advanced Energy Materials and Research
Production and characterization of electroactive nickel oxides on nickel foam and self-standing nickel
nanowires by anodic oxidation in molten salt for supercapacitor electrodes
Mustafa Ürgen
1
, Burcak Avci
1
, Salvadore Pane
2
, Bumjin Jang
2
and
Fajer Mushtaq
2
1
Istanbul Technical University, Turkey
2
ETH-Zürich, Switzerland
Statement of the Problem:
Nickel oxides, hydroxides and oxy hydroxides are promising materials for supercapacitor
applications due to their high specific capacity. While indirect production of these nickel based materials is achieved either
by chemical or electrochemical routes, the direct production on nickel metal itself has proved challenging. However, direct
production should be investigated because it would facilitate the electron transfer required for redox reactions on the electrode
surface, leading to much higher capacitances than those of the electrodes prepared with mixing nickel based materials and
polymer blends.
Methodology &Theoretical Orientation:
In the previous studies conducted in our group, we adapted molten salt electrolysis
in KOH to directly synthesize nickel oxides on Ni foam. Here, we use the optimum parameters to synthesize nickel oxides on
Ni foam and self-standing nickel nanowires (Ni NW) produced by electro deposition in AAO templates. These structures are
characterized by XRD, SEM and Raman spectroscopy. The structure and the capacitance behavior are determined by cyclic
voltammetry (CV) and chronopotentiometry in 6 M KOH solution.
Findings:
After anodic oxidation, Ni foam and Ni NWs exhibit comparable capacitance behavior and moreover, the inherent
capacitance of the Ni NWs is also increased.
Conclusion & Significance:
Ni NWs are promising material group for supercapacitor applications similar to Ni foams when
they are anodically oxidized by using optimized parameters.
Recent Publications
1. Tokmak N and Ürgen M (2017) Production and characterization of electroactive nickel oxides grown on nickel foam by
anodic oxidation in KOH melts for supercapacitor application. MRS Advances 2(54):3237- 3247.
2. F Bayata, Z Beril Akinci, A Senem Donatan and Mustafa Urgen (2012) A novel free-standing nanowire substrate with
surface enhanced Raman scattering (SERS) activity. Materials Letters 67(1):387-389.
3. F Bayata and M Ürgen (2015) Role of aluminum doping on phase transformations in nanoporous titania anodic oxides.
Journal of Alloys and Compounds 646:719–726.
4. F Bayata, B Saruhan-Brings and M Ürgen (2014) Hydrogen gas sensing properties of nano porous al-doped titania.
Sensors Actuators B Chemical 204:109–118.
Mustafa Ürgen et al., Innov Ener Res 2018, Volume 7
DOI: 10.4172/2576-1463-C1-002