Mo 도핑을 이용한 NiCo LDH 나노결정의 산소발생반응 향상
Enhancement of oxygen evolution reaction of NiCo LDH nanocrystals using Mo doping
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초록
수소 생산을 위한 물 분해 시스템의 효율성을 높이려면 산소 발생 반응 (OER, Oxygen Evolution Reaction)에서 촉매로 인해 발생하는 전기화학 반응의 높은 과전압을 감소시켜야 한다. 그중 전이금속을 포함하는 LDH(Layered Double Hydroxide)와 같은 화합물은 현재 사용되고 있는 백금 등의 귀금속을 대체할 수 있는 촉매 소재로 주목받고 있다. 본 연구에서는 저렴한 금속 다공성 물질인 니켈 폼을 지지체로 사용하였고, 수열합성 공정을 통해 NiCo LDH 나노결정을 합성하였다. 또한, OER 특성을 향상시키기 위해 Mo를 도핑하여 합성한 Mo 도핑된 NiCo LDH 나노결정 시료의 형태, 결정구조, 물분해 특성의 변화를 관찰하였다.
Abstract
To improve the efficiency of water splitting systems for hydrogen production, the high overvoltages of electrochemical reactions caused by catalysts in the oxygen evolution reaction (OER, Oxygen Evolution Reaction) must be reduced. Among them, LDH (Layered Double Hydroxide) compounds containing transition metal such as Ni, are attracting attention as catalyst materials that can replace precious metals such as platinum that are currently used. In this study, nickel foam, an inexpensive metallic porous material, was used as a support, and NiCo LDH (Layered Double Hydroxide) nanocrystals were synthesized through a hydrothermal synthesis process. In addition, changes in the shape, crystal structure, and water decomposition characteristics of the Mo-doped NiCo LDH nanocrystal samples synthesized by doping Mo to improve OER properties were observed.
참고문헌 (16)
- Y. Jung, "Research and development trends in seawater electrolysis systems and catalyst", Appl. Chem. Eng, 34(6), pp.567~ (2023)
- B. L. Salvi, "Sustainable development of road transportation sector using hydrogen energy system", Renew. Sustain. Energy Rev, 51, pp.1132~ (2015)
- M. A. Pellow, "Hydrogen or batteries for grid storage? A net energy analysis", Energy Environ. Sci, 8, pp.1938~ (2015)
- J. Gorre, "Cost benefits of optimizing hydrogen storage and methanation capacities for Power-to-Gas plants in dynamic operation", Appl. Energy, 257, pp.113967~ (2020)
- M. El-Shafie, "Hydrogen production by water electrolysis tech-nologies : A review", Results Eng, 20, pp.101426~ (2023)
- G. Liu, "Oxygen evolution reaction electrocatalysts for seawater splitting : A review", J. Electroanal. Chem, 923, pp.116802~ (2022)
- Y. Zhou, "Progress and challenge of amorphous catalysts for electrochemical water splitting", ACS Mater. Lett, 3, pp.136~ (2021)
- S. -C. Ke, "Mini review on electrocatalyst design for seawater splitting : recent progress and perspectives", Energy Fuels, 35, pp.12948~ (2021)
- T. Kou, "Ni foam-suported Fe-doped β-Ni(OH)2 nanosheets show ultralow overpotential for oxygen evolution reaction", ACS Energy Lett, 4, pp.622~ (2019)
- A. Hameed, "Layered double hydroxide-derived nanomaterials for efficient electrocatalytic water splitting : Recent progress and future perspective", ACS Energy Lett, 7, pp.3311~ (2022)
- J-I. Lee, "Heat-treatment effects on oxygen evolution reaction of nickel-conbalt layered couble hydroxide", J. Korean Cryst. Growth Cryst. Technol, 31(3), pp.143~ (2021)
- A. Hameed, "Layered double hydroxide-derived nanomaterials for efficient electrocatalytic water splitting : Recent progress and future perspective", ACS Energy Lett, 7, pp.3311~ (2022)
- K. Lee, "Surface-modified carbon nanotubes with ultrathin Co3O4layer for enhanced oxygen evolution reaction", ACS Appl. Mater. Interfaces, 15, pp.58377~ (2023)
- J. Guo, "Enhanced electrocatalytic activity of Mo-doped NiFe layered double hydroxide nanosheet arrays for the hydrogen evolution reaction", ACS Appl. Nano Mater, 6, pp.379~ (2023)
- L. Wei, "High-valence Mo doping for highly promoted water oxidation of NiFe(oxy)hydroxide", J. Mater. Chem. A, 10, pp.23790~ (2022)
- B. You, "Innovative strategies for Electrocatalytic water splitting", ACS. Chem. Res, 51, pp.1571~ (2018)