Lanthanum Hydroxide Nanorod-Templated Graphitic Hollow Carbon Nanorods for Supercapacitors.

ACS Omega

Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080-3021, United States.

Published: October 2018

AI Article Synopsis

  • Lanthanum hydroxide nanorods served as both a template and catalyst to create hollow carbon nanorods with graphitic walls through chemical vapor deposition.
  • The resulting carbon structures formed a connected maze-like network, which boasts a high surface area of 771 m²/g due to accessible inner surfaces from broken ends.
  • When tested as an electrode for supercapacitors, these hollow carbon nanorods achieved a specific capacitance of 128 F/g, with an energy density of 55 Wh/kg and a power density of 1700 W/kg using a specific ionic liquid electrolyte.

Article Abstract

Lanthanum hydroxide nanorods were employed as both a template and catalyst for carbon synthesis by chemical vapor deposition. The resulting carbon possesses hollow nanorod shapes with graphitic walls. The hollow carbon nanorods were interconnected at some junctions forming a mazelike network, and the broken ends of the tubular carbon provide accessibility to the inner surface of the carbon, resulting in a surface area of 771 m/g. The hollow carbon was tested as an electrode material for supercapacitors. A specific capacitance of 128 F/g, an energy density of 55 Wh/kg, and a power density of 1700 W/kg at 1 A/g were obtained using the ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, as the electrolyte.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644425PMC
http://dx.doi.org/10.1021/acsomega.8b01714DOI Listing

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