Polyelectrolyte functionalized carbon nanotubes as efficient metal-free electrocatalysts for oxygen reduction.

  title={Polyelectrolyte functionalized carbon nanotubes as efficient metal-free electrocatalysts for oxygen reduction.},
  author={Shuangyin Wang and Dingshan Yu and Liming Dai},
  journal={Journal of the American Chemical Society},
  volume={133 14},
Having a strong electron-withdrawing ability, poly(diallyldimethylammonium chloride) (PDDA) was used to create net positive charge for carbon atoms in the nanotube carbon plane via intermolecular charge transfer. The resultant PDDA functionalized/adsorbed carbon nanotubes (CNTs), either in an aligned or nonaligned form, were demonstrated to act as metal-free catalysts for oxygen reduction reaction (ORR) in fuel cells with similar performance as Pt catalysts. The adsorption-induced… 

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