Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors
In this paper, we demonstrate excellent pseudo-capacitance behavior of nickel-aluminum double hydroxide microspheres (NiAl DHM) synthesized by a facile solvothermal technique using tertbutanol as a structure-directing agent on nickel foam-graphene (NF-G) current collector as compared to use of nicke...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2014-09-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4896125 |
| _version_ | 1819131776560267264 |
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| author | Damilola Momodu Abdulhakeem Bello Julien Dangbegnon Farshad Barzeger Fatimeh Taghizadeh Mopeli Fabiane A. T. Charlie Johnson Ncholu Manyala |
| author_facet | Damilola Momodu Abdulhakeem Bello Julien Dangbegnon Farshad Barzeger Fatimeh Taghizadeh Mopeli Fabiane A. T. Charlie Johnson Ncholu Manyala |
| author_sort | Damilola Momodu |
| collection | DOAJ |
| description | In this paper, we demonstrate excellent pseudo-capacitance behavior of nickel-aluminum double hydroxide microspheres (NiAl DHM) synthesized by a facile solvothermal technique using tertbutanol as a structure-directing agent on nickel foam-graphene (NF-G) current collector as compared to use of nickel foam current collector alone. The structure and surface morphology were studied by X-ray diffraction analysis, Raman spectroscopy and scanning and transmission electron microscopies respectively. NF-G current collector was fabricated by chemical vapor deposition followed by an ex situ coating method of NiAl DHM active material which forms a composite electrode. The pseudocapacitive performance of the composite electrode was investigated by cyclic voltammetry, constant charge–discharge and electrochemical impedance spectroscopy measurements. The composite electrode with the NF-G current collector exhibits an enhanced electrochemical performance due to the presence of the conductive graphene layer on the nickel foam and gives a specific capacitance of 1252 F g−1 at a current density of 1 A g−1 and a capacitive retention of about 97% after 1000 charge–discharge cycles. This shows that these composites are promising electrode materials for energy storage devices. |
| first_indexed | 2024-12-22T09:20:53Z |
| format | Article |
| id | doaj.art-d783020257334f3ab1f4ac47a86f0746 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-22T09:20:53Z |
| publishDate | 2014-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-d783020257334f3ab1f4ac47a86f07462022-12-21T18:31:11ZengAIP Publishing LLCAIP Advances2158-32262014-09-0149097122097122-1410.1063/1.4896125017409ADVSolvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitorsDamilola Momodu0Abdulhakeem Bello1Julien Dangbegnon2Farshad Barzeger3Fatimeh Taghizadeh4Mopeli Fabiane5A. T. Charlie Johnson6Ncholu Manyala7Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USADepartment of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.In this paper, we demonstrate excellent pseudo-capacitance behavior of nickel-aluminum double hydroxide microspheres (NiAl DHM) synthesized by a facile solvothermal technique using tertbutanol as a structure-directing agent on nickel foam-graphene (NF-G) current collector as compared to use of nickel foam current collector alone. The structure and surface morphology were studied by X-ray diffraction analysis, Raman spectroscopy and scanning and transmission electron microscopies respectively. NF-G current collector was fabricated by chemical vapor deposition followed by an ex situ coating method of NiAl DHM active material which forms a composite electrode. The pseudocapacitive performance of the composite electrode was investigated by cyclic voltammetry, constant charge–discharge and electrochemical impedance spectroscopy measurements. The composite electrode with the NF-G current collector exhibits an enhanced electrochemical performance due to the presence of the conductive graphene layer on the nickel foam and gives a specific capacitance of 1252 F g−1 at a current density of 1 A g−1 and a capacitive retention of about 97% after 1000 charge–discharge cycles. This shows that these composites are promising electrode materials for energy storage devices.http://dx.doi.org/10.1063/1.4896125 |
| spellingShingle | Damilola Momodu Abdulhakeem Bello Julien Dangbegnon Farshad Barzeger Fatimeh Taghizadeh Mopeli Fabiane A. T. Charlie Johnson Ncholu Manyala Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors AIP Advances |
| title | Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors |
| title_full | Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors |
| title_fullStr | Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors |
| title_full_unstemmed | Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors |
| title_short | Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors |
| title_sort | solvothermal synthesis of nial double hydroxide microspheres on a nickel foam graphene as an electrode material for pseudo capacitors |
| url | http://dx.doi.org/10.1063/1.4896125 |
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