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나노입자 연구단
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Bi-modified Pt supported on carbon black as electro-oxidation catalyst for 300 W formic acid fuel cell stack

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Title
Bi-modified Pt supported on carbon black as electro-oxidation catalyst for 300 W formic acid fuel cell stack
Author(s)
Choi M.; Chi-Yeong Ahn; Hyunjoon Lee; Kim J.K.; Oh S.-H.; Wonchan Hwang; Yang S.; Kim J.; Kim O.-H.; Choi I.; Yung-Eun Sung; Cho Y.-H.; Rhee C.K.; Shin W.
Publication Date
2019-09
Journal
APPLIED CATALYSIS B-ENVIRONMENTAL, v.253, no., pp.187 - 195
Publisher
ELSEVIER SCIENCE BV
Abstract
© 2019 Elsevier B.V. Formic acid is a chemical with a simple molecular structure containing hydrogen. This liquid at room temperature is easy to handle and has a low toxicity, and is thus in the spotlight as a fuel. In particular, formic acid is an excellent fuel candidate because it can be operated at low temperatures when applied as a fuel in fuel cells with a high theoretical open-circuit voltage (1.48 V). However, it has a drawback in that the electrode catalyst is deactivated due to the generation of CO intermediates when formic acid is oxidized during cell operation. Therefore, to prevent this, an irreversibly adsorbed Bi on Pt catalyst is applied to a direct formic acid fuel cell (DFAFC)anode because it is easy to synthesize and economical. Physical analyses such as transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA)were conducted, and electrochemical evaluations were performed through half-cell and single-cell level tests. The results revealed that the formic acid oxidation reaction activity of the Bi-modified Pt/C was 13 times higher than that of the conventional catalyst at 0.58 V. Further, a DFAFC stack was fabricated using the Bi-modified Pt/C, which yielded a power of 300 W. These results suggest that a simple synthesis method can be applied to fabricating industrially available DFAFC stacks
URI
https://pr.ibs.re.kr/handle/8788114/6873
ISSN
0926-3373
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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