In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2017-02, No. 33 ( 2017-09-01), p. 1453-1453
Abstract:
Formic acid has been attracting attention as an energy storage medium because of its excellent ability to store hydrogen. In addition, technologies to convert CO 2 , a greenhouse gas, into formic acid are being developed. It is expected that a large amount of environment-friendly formic acid from recycled CO 2 will be produced in the near future. DFAFC has been actively developed in recent years because of high electro-motive force (EMF), low fuel crossover through membrane, non-flammable, and low toxic. However, the electrooxidation performance of formic acid is degraded by CO poison on platinum catalyst in DFAFC. In this study, the characteristics of DFAFC using Bi-modified Pt/C catalyst by irreversible adsorption was investigated in order to improve the performance of platinum catalysts. Bi-modified Pt/C (Bi/Pt/C) catalyst was used for the anode catalyst layer at a loading of 1.2 mg·cm -2 . The cathode consisted of unsupported Pt black at a loading of 3.0 mg·cm -2 . The DFAFC stack was comprised of 35 cells with 50 cm 2 electrode. For single-cell with 5.06 cm 2 , the performance of DFAFC based on Bi/Pt/C catalyst was more than 2 times higher than that of Pt/C catalyst. The maximum and the average power output of 35-cell stack was 301 W and 200 W at 60 o C, 6 M formic acid and air, respectively. The maximum power density of the cell with the best performance among the cells in the stack was 202.4 mW·cm -2 . The high performance of the DFAFC stack demonstrates that it has a great potential for the power supply of portable electronics or small transport vehicles such as electric bicycles.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2017-02/33/1453
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2017
detail.hit.zdb_id:
2438749-6
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