Journal
BIORESOURCE TECHNOLOGY
Volume 193, Issue -, Pages 545-548Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.05.111
Keywords
Microbial fuel cell; Binuclear-cobalt-phthalocyanine; Oxygen reduction reaction; Pyrolysis; Nitrogen doping
Funding
- National Natural Science Foundation of China [21173086, 20975040, U1301245]
- Guangdong Natural Science Foundation [2014A030313259]
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A novel platinum (Pt)-free cathodic materials binuclear-cobalt-phthalocyanine (Bi-CoPc) pyrolyzed at different temperatures (300-1000 degrees C) were examined as the oxygen reduction reaction (ORR) catalysts, and compared with unpyrolyzed Bi-CoPc/C and Pt cathode in single chamber microbial fuel cells (SCMFCs). The results showed that the pyrolysis process increased the nitrogen abundance on Bi-CoPc and changed the nitrogen types. The Bi-CoPc pyrolyzed at 800 degrees C contained a significant amount of pyrrolic-N, and exhibited a high electrochemical catalytic activity. The power density and current density increased with temperature: Bi-CoPc/C-800 > Bi-CoPc/C-1000 > Bi-CoPc/C-600 > Bi-CoPc/C-300 > Bi-CoPc/C. The SCMFC with Bi-CoPc/C-800 cathode had a maximum power density of 604 mW m(-2). The low cost Bi-CoPc compounds developed in this study showed a potential in air-breathing MFC systems, with the proper pyrolysis temperature being chosen. (C) 2015 Elsevier Ltd. All rights reserved.
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