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

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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.

Original languageEnglish
Pages (from-to)5305-5314
Number of pages10
JournalEnergy and Environmental Science
Volume5
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1

Fingerprint

Vitamins
Vitamin B 12
fuel cell
vitamin
electrolyte
Electrolytes
Fuel cells
Polymers
polymer
catalyst
Oxygen
oxygen
Catalysts
Methanol fuels
porphyrin
Hydrogen fuels
Porphyrins
Density functional theory
methanol
Catalyst activity

ASJC Scopus subject areas

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

Cite this

Vitalizing fuel cells with vitamins : Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells. / Chang, Sun Tang; Wang, Chen Hao; Du, He Yun; Hsu, Hsin Cheng; Kang, Chih Ming; Chen, Chia Chun; Wu, Jeffrey C.S.; Yen, Shi Chern; Huang, Wen Fei; Chen, Li Chyong; Lin, M. C.; Chen, Kuei Hsien.

In: Energy and Environmental Science, Vol. 5, No. 1, 01.01.2012, p. 5305-5314.

Research output: Contribution to journalArticle

Chang, Sun Tang ; Wang, Chen Hao ; Du, He Yun ; Hsu, Hsin Cheng ; Kang, Chih Ming ; Chen, Chia Chun ; Wu, Jeffrey C.S. ; Yen, Shi Chern ; Huang, Wen Fei ; Chen, Li Chyong ; Lin, M. C. ; Chen, Kuei Hsien. / Vitalizing fuel cells with vitamins : Pyrolyzed vitamin B12 as a non-precious catalyst for enhanced oxygen reduction reaction of polymer electrolyte fuel cells. In: Energy and Environmental Science. 2012 ; Vol. 5, No. 1. pp. 5305-5314.
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