In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2016-02, No. 38 ( 2016-09-01), p. 2789-2789
Abstract:
Graphitic carbon nitride is a new class of semiconducting graphene-like polymeric material with visible light absorption and photocatalytic properties. In addition to high nitrogen content and tunable structure, it was shown that graphitic carbon nitride based on polytrazine imide (PTI) sheets exhibit excellent anti-corrosion ability in ex-situ fuel cell environment. 1 However, in bulk form, their low surface area and poor conductivity limits their applications in fuel cells. In this work, an exfoliation route was established to produce PTI ink containing single to few-layer nanosheets. The ink was then processed to produce 3D networks of carbon nitride nanosheets/reduced graphene oxide (rGO-PTI) hybrid nanostructure with large interconnecting pores for fast mass transport of reactants (Figure 1a) and high surface area. The material was decorated with low loadings of platinum which also acts as spacers to prevent the restacking of the nanosheets, and then investigated for its electrochemical properties and applications as a durable catalyst support for PEM fuel cells. Initial results show that the cathode catalytic activity of Pt/rGO-PTI hybrid is significantly improved in comparison to Pt/PTI or Pt/rGO (Figure 1b), and long-term potential cycling shows that it is more durable than commercial Pt/C. The work is now being extended to develop high-performance and stable membrane electrode assemblies (MEA) for PEM fuel cells. N. Mansor, A. Belen Jorge, F. Corà, C. Gibbs, R. Jervis, P. F. McMillan, X. Wang, D. J. L. Brett, J. Phys. Chem. C 2014, 118 (13), 6831-6838 Figure 1
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2016-02/38/2789
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2016
detail.hit.zdb_id:
2438749-6
Permalink