Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam
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Developing effective and earth-abundant electrocatalyst for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is critical for the commercialization of a water splitting system. In particular, the overpotential ofthe OER is relatively higher than the HER, and thus, it is considered that one of the important methods to enhance the performance of the electrocatalyst is to reduce the overpotential of the OER. We report effects of incorporation ofmetalloid into Ni(OH)2 microcrystal on electrocatalytic activities. In this study, Te incorporated Ni(OH)2 (χTe-Ni(OH)2) were grown on three-dimensional porous NF by a facile solvothermal method with χ=1, 3 and 5. Homogeneous microplatestructure on the NF was clearly observed for the Ni(OH)2/NF and Te-Ni(OH)2/NF samples. However, irregular and collapsed nanostructures were found on the surface of nickel foam when Te precursor ratio is (χ) over 3. ElectrocatalyticOER properties were analysed by Linear sweep voltammetry (LSV) and Electrochemical impedance spectroscopy (EIS). The amount of Te incorporation used in the electrocatalytic reaction was found to play a crucial role in improving catalytic activity. The optimum Te amount (χ) introduced into the Ni(OH)2/NF was discussed with respect to their OER performance.
Abstract
Developing effective and earth-abundant electrocatalyst for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is critical for the commercialization of a water splitting system. In particular, the overpotential ofthe OER is relatively higher than the HER, and thus, it is considered that one of the important methods to enhance the performance of the electrocatalyst is to reduce the overpotential of the OER. We report effects of incorporation ofmetalloid into Ni(OH)2 microcrystal on electrocatalytic activities. In this study, Te incorporated Ni(OH)2 (χTe-Ni(OH)2) were grown on three-dimensional porous NF by a facile solvothermal method with χ=1, 3 and 5. Homogeneous microplatestructure on the NF was clearly observed for the Ni(OH)2/NF and Te-Ni(OH)2/NF samples. However, irregular and collapsed nanostructures were found on the surface of nickel foam when Te precursor ratio is (χ) over 3. ElectrocatalyticOER properties were analysed by Linear sweep voltammetry (LSV) and Electrochemical impedance spectroscopy (EIS). The amount of Te incorporation used in the electrocatalytic reaction was found to play a crucial role in improving catalytic activity. The optimum Te amount (χ) introduced into the Ni(OH)2/NF was discussed with respect to their OER performance.
참고문헌 (16)
- B. You, "Innovative strategies for electrocatalytic water splitting", Acc. Chem. Res, 51, pp.1571~ (2018)
- Y. Shi, "Recent advances in transition metal phosphide nanomaterials : synthesis and applications in hydrogen evolution reaction", Chem. Soc. Rev, 45, pp.1529~ (2016)
- M. Zeng, "Recent advances in heterogeneous electrocatalysts for the hydrogen evolution reaction", J. Mater. Chem. A, 3, pp.14942~ (2015)
- 이호준, "수전해용 Nd1.5Ba1.5CoFeMnOx 전기촉매 특성 분석", 한국결정성장학회지, 30(1), pp.17~20 (2020), 한국결정성장학회[DOI]
- W. Zhang, "Surface plasmon-driven photoelectrochemical water splitting of aligned ZnO nanorod arrays decorated with loading-controllable au nanoparticles", Sol. Energy Mater. Sol. Cells, 180, pp.25~ (2018)
- R. Kant, "Design and fabrication of sandwich-structured αFe2O3", Au, Sol. Energy Mater. Sol. Cells, pp.2018, 178[DOI]
- S. A. Shah, "Thermal synthesis of FeNi@nitrogen-doped graphene dispersed on nitrogendoped carbon matrix as an excellent electrocatalyst for oxygen evolution reaction", ACS Appl. Energy Mater, 2, pp.4075~ (2019)
- T. Zhang, "Engineering oxygen vacancy on NiO nanorod arrays for alkaline hydrogen evolution", Nano Energy, 43, pp.103~ (2018)
- L. Lin, "Hydrothermal fabrication of uniform hexagonal NiO nanoshet: Structure, growth and response", Mater. Lett, 102-103, pp.43~ (2013)
- G. -Q. Han, "Three dimensional nickel oxides", nickel structure by in situ electro-oxidation of nickel foam as robust electrocatalyst for oxygen evolution reaction, 2015, pp.359, 172~
- H. Han, "Boosting oxygen evolution reaction of transition metal layered double hydroxide by metalloid incorporation", Nano Energy, 75, pp.104945~ (2020)
- M. Xu, "Layered double hydroxide-based catalysts : Recent advances in preparation, structure, and applications", Adv. Funct. Mater, 28, pp.1802943~ (2018)
- J. Masa, "Ultrathin high surface area nickel boride(NixB)nanosheets as highly efficient electrocatalyst for oxygen evolution", Adv. Energy Mater, 7, pp.1700381~ (2017)
- C. C. L. McCrory, "Benchmarking heterogeneous electrocatalysts for the oxygen evolution reaction", J. Am. Chem. Soc, 135, pp.16977~ (2013)
- N. T. Suen, "Electrocatalysis for the oxygen evolution reaction : Recent development and future perspectives", Chem. Soc. Rev, 46, pp.337~ (2017)
- X. Du, "Modulating electronic structures of inorganic nanomaterials for efficient electrocatalytic water splitting", Angew. Chem. Int. Ed, 58, pp.4484~ (2019)