전기 방사법을 이용한 플레이크형 LiCoO2 나노 분말의 제조
Fabrication of Flake-like LiCoO2 Nanopowders using Electrospinning
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초록
Flake-like LiCoO2 nanopowders were fabricated using electrospinning. To investigate their formation mechanism,field-emssion scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were carriedout. Among various parameters of electrospinning, we controlled the molar concentration of the precursor and the PVPpolymer. When the molar concentration of lithium and cobalt was 0.45 M, the morphology of LiCoO2 nanopowders wasirregular and round. For 1.27 M molar concentration, the LiCoO2 nanopowders formed with flake-like morphology. Forthe PVP polymer, the molar concentration was set to 0.011 mM, 0.026 mM, and 0.043 mM. Irregular LiCoO2 nanopowderswere formed at low concentration (0.011 mM), while flake-like LiCoO2 were formed at high concentration(0.026 mM and 0.043 mM). Thus, optimized molar concentration of the precursor and the PVP polymer may be relatedto the successful formation of flake-like LiCoO2 nanopowders. As a results, the synthesized LiCoO2 nanopowder can beused as the electrode material of Li-ion batteries.
Abstract
Flake-like LiCoO2 nanopowders were fabricated using electrospinning. To investigate their formation mechanism,field-emssion scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were carriedout. Among various parameters of electrospinning, we controlled the molar concentration of the precursor and the PVPpolymer. When the molar concentration of lithium and cobalt was 0.45 M, the morphology of LiCoO2 nanopowders wasirregular and round. For 1.27 M molar concentration, the LiCoO2 nanopowders formed with flake-like morphology. Forthe PVP polymer, the molar concentration was set to 0.011 mM, 0.026 mM, and 0.043 mM. Irregular LiCoO2 nanopowderswere formed at low concentration (0.011 mM), while flake-like LiCoO2 were formed at high concentration(0.026 mM and 0.043 mM). Thus, optimized molar concentration of the precursor and the PVP polymer may be relatedto the successful formation of flake-like LiCoO2 nanopowders. As a results, the synthesized LiCoO2 nanopowder can beused as the electrode material of Li-ion batteries.
참고문헌 (28)
- 양희승, "폐 WC-Co계 초경합금에서 추출된 코발트 재생 원료를 이용한 LiCoO_2 입자 합성 연구", 한국분말야금학회지, 18(3), pp.277~282 (2011), 한국분말야금학회
- H. Xia, , Electrochim. Acta, 52, pp.7014~ (2007)
- X. Qian, , Nanotechnology, 20, pp.115608~ (2009)
- M. Okubo, , J. Am. Chem. Soc., 129, pp.7444~ (2007)
- C. Chen, , J. Mater. Chem., 6, pp.765~ (1996)
- H. P. Lin, , Acc. Chem. Res., 35, pp.927~ (2002)
- Z. S. Peng, , J. Power Sources, 72, pp.215~ (1998)
- F. Jiao, , Angew. Chem. Int. Ed., 44, pp.6550~ (2005)
- A. Burukhin, , Solid State Ionics, 151, pp.259~ (2002)
- H. Chen, , Electrochem. Commun., 4, pp.488~ (2002)
- 이영인, "전기방사법을 통한 주석산화물 나노튜브의 합성 및 리튬이차전지 음극으로의 응용", 한국분말야금학회지, 19(4), pp.271~277 (2012), 한국분말야금학회[DOI]
- H. L. An, , Mater. Lett., 93, pp.88~ (2013)
- C. L. Casper, , Macromolecules, 37, pp.573~ (2004)
- 김희택, "전기방사법을 이용한 Ag 나노입자 분산 고분자 나노파이버와 Ag 나노파이버 제조 및 특성평가", 한국분말야금학회지, 15(2), pp.114~118 (2008), 한국분말야금학회
- Z. Wang, , J. Phys. Chem. B, 112, pp.11292~ (2008)
- S. Megelski, , Macromolecules, 35, pp.8456~ (2002)
- K. H. Lee, , Polymer, 44, pp.4029~ (2003)
- A. R. Babar, , J. Alloys Compd., 509, pp.3108~ (2011)
- J. Fu, , Mater. Chem. Phys., 115, pp.105~ (2009)
- A. A. Akl, , Appl. Surf. Sci., 252, pp.8745~ (2006)
- M. Das, , Appl. Phys. A, 95, pp.523~ (2009)
- R. Alcántara, , J. Electroanal. Chem., 584, pp.147~ (2005)
- L. Dahéron, , Chem. Mater., 20, pp.583~ (2008)
- Y. Aykut, , J. Phys. Chem. Solids, 74, pp.1538~ (2013)
- Y. J. Zhang, , Cryst. Growth Des., 8, pp.3206~ (2008)
- T. Watanabe, , J. Solid State Chem., 162, pp.364~ (2001)
- Y. Shao-Horn, , J. Solid State Chem., 168, pp.60~ (2002)
- M. K. Jo, , Electrochem. Commun., 12, pp.992~ (2010)