Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD
Abstract
Nanostructured nickel thin films were deposited on glass using glancing angle deposition (GLAD) technique. Cross-sectional field emission scanning electron microscopy images have shown that obtained Ni thin films consist of vertical, tilted or zigzag nano-scaled columns, while X-ray diffraction have shown that (111) orientation prevailed. X-ray photoelectron spectroscopy revealed that apart from metallic nickel, NiO and Ni(OH)(2) were also present in lower amount. Cyclic voltammetry in alkaline solution has shown that hydrogen evolution reaction (HER) was significantly catalyzed on all columnar nanostructures compared to Ni(poly). This was ascribed to the high electroactive surface area (EASA) of porous nickel columns. EASAs for vertical, tilted and zigzag Ni thin layers were higher 32, 25.3, and 24.9 times, respectively, than their geommetric areas. Accordingly, Ni thin films with vertical columns have shown the highest activity for HER.
Keywords:
nickel thin films / glancing angle deposition / hydrogen evolution reaction / alkaline solutionSource:
International Journal of Electrochemical Science, 2017, 12, 6, 4692-4701Publisher:
- Esg, Belgrade
Funding / projects:
DOI: 10.20964/2017.06.89
ISSN: 1452-3981
WoS: 000405200600007
Scopus: 2-s2.0-85020804172
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IHTMTY - JOUR AU - Potočnik, Jelena AU - Popović, Maja AU - Rakočević, Zlatko Lj. AU - Štrbac, Svetlana PY - 2017 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2148 AB - Nanostructured nickel thin films were deposited on glass using glancing angle deposition (GLAD) technique. Cross-sectional field emission scanning electron microscopy images have shown that obtained Ni thin films consist of vertical, tilted or zigzag nano-scaled columns, while X-ray diffraction have shown that (111) orientation prevailed. X-ray photoelectron spectroscopy revealed that apart from metallic nickel, NiO and Ni(OH)(2) were also present in lower amount. Cyclic voltammetry in alkaline solution has shown that hydrogen evolution reaction (HER) was significantly catalyzed on all columnar nanostructures compared to Ni(poly). This was ascribed to the high electroactive surface area (EASA) of porous nickel columns. EASAs for vertical, tilted and zigzag Ni thin layers were higher 32, 25.3, and 24.9 times, respectively, than their geommetric areas. Accordingly, Ni thin films with vertical columns have shown the highest activity for HER. PB - Esg, Belgrade T2 - International Journal of Electrochemical Science T1 - Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD VL - 12 IS - 6 SP - 4692 EP - 4701 DO - 10.20964/2017.06.89 ER -
@article{ author = "Potočnik, Jelena and Popović, Maja and Rakočević, Zlatko Lj. and Štrbac, Svetlana", year = "2017", abstract = "Nanostructured nickel thin films were deposited on glass using glancing angle deposition (GLAD) technique. Cross-sectional field emission scanning electron microscopy images have shown that obtained Ni thin films consist of vertical, tilted or zigzag nano-scaled columns, while X-ray diffraction have shown that (111) orientation prevailed. X-ray photoelectron spectroscopy revealed that apart from metallic nickel, NiO and Ni(OH)(2) were also present in lower amount. Cyclic voltammetry in alkaline solution has shown that hydrogen evolution reaction (HER) was significantly catalyzed on all columnar nanostructures compared to Ni(poly). This was ascribed to the high electroactive surface area (EASA) of porous nickel columns. EASAs for vertical, tilted and zigzag Ni thin layers were higher 32, 25.3, and 24.9 times, respectively, than their geommetric areas. Accordingly, Ni thin films with vertical columns have shown the highest activity for HER.", publisher = "Esg, Belgrade", journal = "International Journal of Electrochemical Science", title = "Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD", volume = "12", number = "6", pages = "4692-4701", doi = "10.20964/2017.06.89" }
Potočnik, J., Popović, M., Rakočević, Z. Lj.,& Štrbac, S.. (2017). Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD. in International Journal of Electrochemical Science Esg, Belgrade., 12(6), 4692-4701. https://doi.org/10.20964/2017.06.89
Potočnik J, Popović M, Rakočević ZL, Štrbac S. Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD. in International Journal of Electrochemical Science. 2017;12(6):4692-4701. doi:10.20964/2017.06.89 .
Potočnik, Jelena, Popović, Maja, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Hydrogen Evolution on Columnar Ni Thin Films Obtained by GLAD" in International Journal of Electrochemical Science, 12, no. 6 (2017):4692-4701, https://doi.org/10.20964/2017.06.89 . .