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Synthesis and characterization of graphene-cobalt phthalocyanines and graphene-iron phthalocyanine composites and their enzymatic fuel cell application

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  • Mani, Veerappan
  • Devasenathipathy, Rajkumar
  • Chen, Shen-Ming
  • Gu, Jiun-An
  • Huang, Sheng-Tung

Abstract

We prepared graphene (GR)-cobalt phthalocyanine (CoPc) and GR-iron phthalocyanine (FePc) composites by simple and facile chemical reduction method for enzymatic fuel cell (EFC) applications. The successful formation of the composites was confirmed by scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction and electrochemical methods. The as-prepared composites were used for the construction of glucose/O2 EFC. The anode of the EFC was prepared by immobilizing glucose oxidase (GOx) at the GR-CoPc composite modified glassy carbon electrode (GCE). GCE/GR-CoPc/GOx exhibited excellent electrocatalytic ability towards oxidation of glucose. In addition, the modified electrode showed appreciable stability, repeatability and reproducibility. GR-FePc composite exhibited superior electrocatalytic ability towards oxygen reduction reaction (ORR). A membraneless glucose/O2 EFC has been fabricated employing GCE/GR-CoPc/GOx and GCE/GR-FePc as anode and cathode respectively. The fabricated EFC offered a maximum power density of 23 μW cm−2 which is comparable with the previously reported EFCs and it exhibited appreciable stability and repeatability. From this study, we infer that GR based MPcs have great potential for the fabrication of EFCs.

Suggested Citation

  • Mani, Veerappan & Devasenathipathy, Rajkumar & Chen, Shen-Ming & Gu, Jiun-An & Huang, Sheng-Tung, 2015. "Synthesis and characterization of graphene-cobalt phthalocyanines and graphene-iron phthalocyanine composites and their enzymatic fuel cell application," Renewable Energy, Elsevier, vol. 74(C), pages 867-874.
    • Handle: RePEc:eee:renene:v:74:y:2015:i:c:p:867-874
    DOI: 10.1016/j.renene.2014.09.003
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    References listed on IDEAS

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    1. Eden, Richard J., 1993. "World energy to 2050 : Outline scenarios for energy and electricity," Energy Policy, Elsevier, vol. 21(3), pages 231-237, March.
    2. Ruiguo Cao & Ranjit Thapa & Hyejung Kim & Xiaodong Xu & Min Gyu Kim & Qing Li & Noejung Park & Meilin Liu & Jaephil Cho, 2013. "Promotion of oxygen reduction by a bio-inspired tethered iron phthalocyanine carbon nanotube-based catalyst," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
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