Erythrocyte-like hollow carbon capsules and their application in proton exchange membrane fuel cells
- Authors
- Kim, Jung Ho; Yu, Jong-Sung
- Issue Date
- 12월-2010
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.12, no.46, pp.15301 - 15308
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL CHEMISTRY CHEMICAL PHYSICS
- Volume
- 12
- Number
- 46
- Start Page
- 15301
- End Page
- 15308
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115211
- DOI
- 10.1039/c0cp00698j
- ISSN
- 1463-9076
- 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).
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Collections - Graduate School > Department of Material Chemistry > 1. Journal Articles
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