Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Synthesis of Multiwall Carbon Nanotube/Graphene Composite by Aerosol Process and Its Characterization for Supercapacitors

에어로졸 공정에 의한 Multiwall carbon nanotube/Graphene 복합체 제조 및 슈퍼커패시터 특성평가

  • Jo, Eun Hee (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Sun Kyung (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Chang, Hankwon (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Lee, Chong Min (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Park, Su-Ryeon (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Choi, Ji-hyuk (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources) ;
  • Jang, Hee Dong (Resources Utilization Research Center, Korea Institute of Geoscience & Mineral Resources)
  • 조은희 (한국지질자원연구원 자원활용연구센터) ;
  • 김선경 (한국지질자원연구원 자원활용연구센터) ;
  • 장한권 (한국지질자원연구원 자원활용연구센터) ;
  • 이총민 (한국지질자원연구원 자원활용연구센터) ;
  • 박수련 (한국지질자원연구원 자원활용연구센터) ;
  • 최지혁 (한국지질자원연구원 자원활용연구센터) ;
  • 장희동 (한국지질자원연구원 자원활용연구센터)
  • Received : 2016.09.30
  • Accepted : 2016.12.25
  • Published : 2016.12.31
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Abstract

A multiwall carbon nanotube (MWCNT)/graphene (GR) composite was synthesized for an enhanced supercapacitor. Aerosol spray pyrolysis (ASP) was employed to synthesize the MWCNT/GR composites using a colloidal mixture of MWCNT and graphene oxide (GO). The effect of the weight ratio of the MWCNT/GO on the particle properties including the morphology and layered structure were investigated. The morphology of MWCNT/GR composites was generally the shape of a crumpled paper ball, and the average composite size was about $5{\mu}m$. MWCNT were uniformly dispersed in GR sheets and the MWCNT not only increase the basal spacing but also bridge the defects for electron transfer between GR sheets. Thus, it was increasing electrolyte/electrode contact area and facilitating transportation of electrolyte ion and electron in the electrode. Electrochemical data demonstrate that the MWCNT/GR (weight ratio=0.1) composite possesses a specific capacitance of 192 F/g at 0.1 A/g and good rate capability (88% capacity retention at 4 A/g) using two-electrode testing system.

Keywords

References

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