Accession Number:

ADA585424

Title:

Three-dimensional B,N-doped Graphene Foam as a Metal-free Catalyst for Oxygen Reduction Reaction

Descriptive Note:

Journal article

Corporate Author:

CASE WESTERN RESERVE UNIV CLEVELAND OH

Report Date:

2013-01-01

Pagination or Media Count:

8.0

Abstract:

Using a modified chemical vapor deposition CVD method, we have prepared a class of new graphene foams GFs doped with nitrogen, boron or both. Nitrogen-doped graphene foams N-GFs with a nitrogen doping level of 3.1 atom were prepared by CVD of CH4 in the presence of NH3 while borondoped graphene foams B-GFs with a boron doping level of 2.1 atom were produced by using toluene and triethyl borate as a carbon and a boron source. On the other hand, graphene foams co-doped with nitrogen 4.5 atom and boron 3 atom BN-GFs were prepared by CVD using melamine diborate as the precursor. In all cases, scanning electron microscope SEM images revealed well-defined foam-like microstructures, while electrochemical measurements showed much higher electrocatalytic activities toward oxygen reduction reaction for the doped graphene foams than their undoped counterparts.

Subject Categories:

  • Industrial Chemistry and Chemical Processing
  • Inorganic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE