Vitalizing fuel cells with vitamins: Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells

Sun Tang Chang; Chen Hao Wang; He Yun Du; Hsin Cheng Hsu; Chih Ming Kang; Chia Chun Chen; Jeffrey C.S. Wu; Shi Chern Yen; Wen Fei Huang; Li Chyong Chen; M. C. Lin; Kuei Hsien Chen

doi:10.1039/c1ee01962g

Vitalizing fuel cells with vitamins: Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells

Sun Tang Chang, Chen Hao Wang^*, He Yun Du, Hsin Cheng Hsu, Chih Ming Kang, Chia Chun Chen, Jeffrey C.S. Wu, Shi Chern Yen, Wen Fei Huang, Li Chyong Chen, M. C. Lin, Kuei Hsien Chen

^*Corresponding author for this work

Department of Chemistry

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115 Citations (Scopus)

Abstract

The limited natural abundance and high cost of Pt has been a major barrier in its applications for hydrogen or methanol fuel cells. In this work, based on the pyrolyzed corrin structure of vitamin B12 (py-B12/C), it is reported to produce superior catalytic activity in the oxygen reduction reaction (ORR) with an electron transfer number of 3.90, which is very close to the ideal case of 4. The H₂-O₂ fuel cell using py-B12/C provides a maximum power density of 370 mW cm^-2 and a current density of 0.720 A cm ^-2 at 0.5 V at 70 °C. Calculations based on density functional theory suggests that the corrin complex with a low-symmetric structure offers a much preferable path for the ORR, which is not applicable to the porphyrin with a high-symmetric structure. The long-term stability and high ORR activity of py-B12/C make it a viable candidate as a Pt-substitute in the ORR.

Original language	English
Pages (from-to)	5305-5314
Number of pages	10
Journal	Energy and Environmental Science
Volume	5
Issue number	1
DOIs	https://doi.org/10.1039/c1ee01962g
Publication status	Published - 2012 Jan

ASJC Scopus subject areas

Environmental Chemistry
Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Pollution

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Chang, S. T., Wang, C. H., Du, H. Y., Hsu, H. C., Kang, C. M., Chen, C. C., Wu, J. C. S., Yen, S. C., Huang, W. F., Chen, L. C., Lin, M. C., & Chen, K. H. (2012). Vitalizing fuel cells with vitamins: Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells. Energy and Environmental Science, 5(1), 5305-5314. https://doi.org/10.1039/c1ee01962g

Chang, ST, Wang, CH, Du, HY, Hsu, HC, Kang, CM, Chen, CC, Wu, JCS, Yen, SC, Huang, WF, Chen, LC, Lin, MC & Chen, KH 2012, 'Vitalizing fuel cells with vitamins: Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells', Energy and Environmental Science, vol. 5, no. 1, pp. 5305-5314. https://doi.org/10.1039/c1ee01962g

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abstract = "The limited natural abundance and high cost of Pt has been a major barrier in its applications for hydrogen or methanol fuel cells. In this work, based on the pyrolyzed corrin structure of vitamin B12 (py-B12/C), it is reported to produce superior catalytic activity in the oxygen reduction reaction (ORR) with an electron transfer number of 3.90, which is very close to the ideal case of 4. The H2-O2 fuel cell using py-B12/C provides a maximum power density of 370 mW cm-2 and a current density of 0.720 A cm -2 at 0.5 V at 70 °C. Calculations based on density functional theory suggests that the corrin complex with a low-symmetric structure offers a much preferable path for the ORR, which is not applicable to the porphyrin with a high-symmetric structure. The long-term stability and high ORR activity of py-B12/C make it a viable candidate as a Pt-substitute in the ORR.",

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AB - The limited natural abundance and high cost of Pt has been a major barrier in its applications for hydrogen or methanol fuel cells. In this work, based on the pyrolyzed corrin structure of vitamin B12 (py-B12/C), it is reported to produce superior catalytic activity in the oxygen reduction reaction (ORR) with an electron transfer number of 3.90, which is very close to the ideal case of 4. The H2-O2 fuel cell using py-B12/C provides a maximum power density of 370 mW cm-2 and a current density of 0.720 A cm -2 at 0.5 V at 70 °C. Calculations based on density functional theory suggests that the corrin complex with a low-symmetric structure offers a much preferable path for the ORR, which is not applicable to the porphyrin with a high-symmetric structure. The long-term stability and high ORR activity of py-B12/C make it a viable candidate as a Pt-substitute in the ORR.

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Vitalizing fuel cells with vitamins: Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells

Abstract

ASJC Scopus subject areas

UN SDGs

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