Issue 46, 2010

Erythrocyte-like hollow carboncapsules and their application in proton exchange membranefuelcells

Abstract

Hierarchical nanostructured erythrocyte-like hollow carbon (EHC) with a hollow hemispherical macroporous core of ca. 230 nm in diameter and 30-40 nm thick mesoporous shell was synthesized and explored as a cathode catalyst support in a proton exchange membrane fuel cell (PEMFC). The morphology control of EHC was successfully achieved using solid core/mesoporous shell (SCMS) silica template and different styrene/furfuryl alcohol mixture compositions by a nanocasting method. The EHC-supported Pt (20 wt%) cathodes prepared have demonstrated markedly enhanced catalytic activity towards oxygen reduction reactions (ORRs) and greatly improved PEMFC polarization performance compared to carbon black Vulcan XC-72 (VC)-supported ones, probably due to the superb structural characteristics of the EHC such as uniform size, well-developed porosity, large specific surface area and pore volume. In particular, Pt/EHC cathodes exhibited ca. 30–60% higher ORR activity than a commercial Johnson Matthey Pt catalyst at a low catalyst loading of 0.2 mg Pt cm−2.

Graphical abstract: Erythrocyte-like hollow carbon capsules and their application in proton exchange membrane fuel cells

Supplementary files

Article information

Article type
Paper
Submitted
26 May 2010
Accepted
07 Sep 2010
First published
11 Oct 2010

Phys. Chem. Chem. Phys., 2010,12, 15301-15308

Erythrocyte-like hollow carbon capsules and their application in proton exchange membrane fuel cells

J. H. Kim and J. Yu, Phys. Chem. Chem. Phys., 2010, 12, 15301 DOI: 10.1039/C0CP00698J

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