Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
권호 표지
DOI QR코드

DOI QR Code

Synthesis of Co3O4 Nanocubes as an Efficient Electrocatalysts for the Oxygen Evolution Reacitons

물 분해 과정에서 효율적인 촉매 특성을 보이는 Co3O4 nanocubes 합성

  • Choi, Hyung Wook (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University) ;
  • Jeong, Dong In (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Wu, Shengyuan (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Kumar, Mohit (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Kang, Bong Kyun (Nano Materials and Components Research Center, Korea Electronics Technology Institute) ;
  • Yang, Woo Seok (Nano Materials and Components Research Center, Korea Electronics Technology Institute) ;
  • Yoon, Dae Ho (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University)
  • Received : 2019.08.30
  • Accepted : 2019.11.26
  • Published : 2019.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

The high efficient water splitting system should involve the reduction of high overpotential value, which was enhanced by the electrocatalytic reaction efficiency of catalysts, during the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) reaction, respectively. Among them, transition metal-based compounds (oxides, sulfides, phosphides, and nitrides) are attracting attention as catalyst materials to replace noble metals that are currently commercially available. Herein, we synthesized optimal monodisperse Co3[Co(CN)6]2 PBAs by FESEM, and confirmed crystallinity by XRD and FT-IR, and thermal behavior of PBAs via TG-DTA. Also, we synthesized monodispersed Co3O4 nanocubes by calcination of Co3[Co(CN)6]2 PBAs, confirmed the crystallinity by XRD, and proceeded OER measurement. Finally, the synthesized Co3O4 nanocubes showed a low overpotential of 312 mV at a current density of 10 mA·cm-2 with a low Tafel plot (96.6 mV·dec-1).

고효율의 물 분해 시스템은 수소 발생 반응(HER)과 산소 발생 반응(OER) 각각에서의 촉매로 인한 전기화학적 반응에서의 효율로 인해 향상되는 높은 과전압의 감소가 수반되어야 한다. 그 중에서도 전이 금속 기반의 화합물(산화물, 황화물, 인화물, 그리고 질화물)은 현재 상용되고 있는 귀금속을 대체할 촉매 재료로써 주목받고 있다. 본 연구에서, 우리는 FESEM 분석을 통해 최적의 단분산된 Co3[Co(CN)6]2 PBAs를 합성하고 XRD, FT-IR 분석을 통하여 결정성을 확인하고 TG-DTA를 통해 PBAs의 열적 거동을 확인하였다. 그리고 합성된 최적의 Co3[Co(CN)6]2 PBAs를 열처리해서 단분산된 Co3O4나노 큐브를 합성하였고 XRD를 통해 이의 결정성을 확인하고 OER 측정을 진행하였다. 최종적으로 합성된 Co3O4 나노 큐브는 10 mA·cm-2의 전류 밀도에서 312 mV의 낮은 과전압과 96.6 mV·dec-1의 낮은 Tafel slope을 보인다.

Keywords

References

  1. Tobias, R., Mehtap, O., and Peter, S., "Electrocatalytic Oxygen Evolution Reaction (OER) on Ru, Ir, and Pt Catalysts: A Comparative Study of Nanoparticles and Bulk Materials," American Chemical Society Catalysis, Vol. 2, No. 8, 2012, pp. 1765-1772.
  2. Shin, W.J., Kim, Y.J., Jang, H.J., Park, J.H., and Kim, Y.K., "Catalytic Reduction Efficiency Comparison between Porous Au, Pt, and Pd Nanoplates," Journal of the Korean Society for Composite Materials, Vol. 32, No. 2, 2019, pp. 85-89.
  3. Wang, C., Daimon, H., and Sun, S.H., "Dumbbell-like $Pt-Fe_3O_4$ Nanoparticles and Their Enhanced Catalysis for Oxygen Reduction Reaction," Nano Letters, Vol. 9, No.4, 2009, pp. 1493-1496. https://doi.org/10.1021/nl8034724
  4. Tiruneh, S.N., Kang, B.K., Kwag, S.H., Bin Humayoun, U., and Yoon, D.H., "Nickel Cobalt Sulfide Anchored in Crumpled and Porous Graphene Framework for Electrochemical Energy Storage," Current Applied Physics, Vol. 18, 2018, pp. S37-S43. https://doi.org/10.1016/j.cap.2017.11.018
  5. Liu, M.J., and Li, J.H., "Cobalt Phosphide Hollow Polyhedron as Efficient Bifunctional Electrocatalysts for the Evolution Reaction of Hydrogen and Oxygen," American Chemical Society Applied Materials & Interfaces, Vol. 8, No. 3, 2016, pp. 2158-2165. https://doi.org/10.1021/acsami.5b10727
  6. Kang, B.K., Im, S.Y., Lee, J.Y., Kwag, S.H., Kwon, S.B., Tiruneh, S., Kim, M.J., Kim, J.H., Yang, W.S., Lim, B.K., and Yoon, D.H., "In-situ Formation of MOF Derived Mesoporous $Co_3N$/amorphous N-doped Carbon Nanocubes as an Efficient Electrocatalytic Oxygen Evolution Reaction," Nano Research, Vol. 12, No. 7, 2019, pp. 1605-1611. https://doi.org/10.1007/s12274-019-2399-3
  7. Wang, Q., Qiu, X., Hu, W.H., and Huang, Y.M., "Facile Synthesis of Three-dimensional Porous Nitrogen Doped Carbon Supported $Co_3O_4$ for Oxygen Reduction Reaction and Oxygen Evolution Reaction," Materials Letters, Vol. 190, 2017, pp. 169-172. https://doi.org/10.1016/j.matlet.2016.12.117
  8. Kwag, S.H., Lee, Y.H., Kim, M.S., Lee, C.W., Kang, B.K., and Yoon, D.H., "Synthesis and Characterization of Three-dimensional Monodispersed $NiO/NiCo_2O_4$ via $Ni_3[Co(CN)_6]_2$ PBA Nanocubes," Journal of the Korean Crystal Growth and Crystal Technology, Vol. 27, No. 3, 2017, pp. 110-114. https://doi.org/10.6111/JKCGCT.2017.27.3.110
  9. Kang, B.K., Woo, M.H., Lee, J.Y., Song, Y.H., Wang, Z.L., Guo, Y.N., Yamauchi, Y., Kim, J.H., Lim, B.K., and Yoon, D.H., "Mesoporous Ni-Fe Oxide Multi-composite Hollow Nanocages for Efficient Electrocatalytic Water Oxidation Reactions," Journal of Materials Chemistry A, Vol. 5, No. 9, 2017, pp. 4320-4324. https://doi.org/10.1039/C6TA10094E
  10. Xu, L., Jiang, Q.Q., Xiao, Z.H., Li, X.Y., Huo, J., Wang, S.Y., and Dai, L.M., "Plasma-Engraved $Co_3O_4$ Nanosheets with Oxygen Vacancies and High Surface Area for the Oxygen Evolution Reaction," Angewandte Chemie, Vol. 55, 2016, pp. 5277-5281. https://doi.org/10.1002/anie.201600687
  11. Liu, Y.-R., Han, G.-Q., Li, X., Dong, B., Shang, X., Hu, W.-H., Chai, Y.-M., Liu, Y.-Q., and Liu, C.-G., "A Facile Synthesis of Reduced $Co_3O_4$ Nanoparticles with Enhanced Electrocatalytic Activity for Oxygen Evolution," International Journal of Hydrogen Energy, Vol. 41, 2016, pp. 12976-12982. https://doi.org/10.1016/j.ijhydene.2016.05.184
  12. Wu, S.K., Shen, X.P., Zhou, H., Zhu, G.X., Wang, R.Y., Ji, Z.Y., Chen, K.M., and Chen, C.J., "Morphological Synthesis of Prussian Blue Analogue $Zn_3[Fe(CN)_6_]_2{\cdot}xH_2O$ Micro-nanocrystals and Their Excellent Adsorption Performance Toward Methylene Blue," Journal of Colloid and Interface Science, Vol. 464, 2016, pp. 191-197. https://doi.org/10.1016/j.jcis.2015.11.036
  13. Sun, X.J., Yang, J., Liu, Q.Q., and Cheng, X.N., "Influence of Sodium Dodecyl Benzene Sulfonate (SDBS) on the Morphology and Negative Thermal Expansion Property of $ZrW_2O_8$ Powders Synthesized by Hydrothermal Method," Journal of Alloys and Compounds, Vol. 481, No. 1-2, 2009, pp. 668-672. https://doi.org/10.1016/j.jallcom.2009.03.061
  14. Carvalho, C., Silva, A., Macedo, L., Luz, R., Neto, J., Fhilho, U. and Cantanhede, W., "New Hybrid Nanomaterial Based on Self-Assembly of cyclodextrins and Cobalt Prussian Blue Analogue Nanocubes," International Journal of Molecular Sciences, Vol. 16, 2015, pp. 14594-14607. https://doi.org/10.3390/ijms160714594
  15. Huang, G., Zhang, L.L., Zhang, F.F., and Wang, L.M., "Metal-organic Framework Derived $Fe_2O_3@NiCo_2O_4$ Porous Nanocages as Anode Materials for Li-ion Batteries," Nanoscale, Vol. 6, 2014, pp. 5509-5515. https://doi.org/10.1039/C3NR06041A