Fabrication of carbon nanofibers decorated with various kinds of metal oxides for battery applications

作者：Lee, Jung-Pil; Choi, Sinho; Cho, Sungjin; Song, Woo-Jin^*; Park, Soojin^*

来源：Energies, 2021, 14(5): 1353.

DOI：10.3390/en14051353

• Battery applications
• Carbonization process
• Controllable diameter
• Electrospinning techniques
• Electrospun nanofibers
• Electrospun polymer nanofibers
• Metal oxide nanoparticles
• Polyvinyl pyrrolidone

Carbon nanofibers decorated with various metal oxide nanoparticles were fabricated by combining an electrospinning technique of bicomponent polymer mixture and a sol-gel reaction and subsequent carbonization process. Electrospun polymer nanofibers consisting of polyacryloni-trile (PAN) and poly(vinyl pyrrolidone) (PVP) with controllable diameters were fabricated with PAN/PVP core/shell types via phase-separation due to the immiscibility between two polymers. The electrospun nanofibers served as supporting materials with binding sites of PVP to incorpo-rate titanium oxide precursor. Subsequently, the carbonization of the fibers led to the formation of carbon nanofibers@TiO2 for energy application, in which rutile TiO2 nanoparticles were decorated on the surface of carbon nanofiber. Especially, this TiO2 decorated carbon nanofiber electrode ex-hibited excellent electrochemical property in lithium-ion batteries (≈600 mA h g−1 at C/5 rate for 100 cycles). Furthermore, the carbon nanofibers were also successfully modified with other metal oxides, including NiO, SnO2, and ZrO2 nanoparticles, in a similar manner.

• 单位
  Chungnam National University; Pohang university of science and technology