Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 39, Issue 25, Pages 13224-13230Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.06.141
Keywords
Chlorella vulgaris; Algae-cathode; Sediment microbial fuel cell; Carbon nanotube; Electricity
Categories
Funding
- National Basic Research Program of China (973) [2011CBA00806, 2012CB721100]
- National Science Fund of China [51209116, 21390204]
- State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201312]
- Program for New Century Excellent Talents at the Ministry of Education of China [NCET-11-0987]
- Research Fund for the Doctoral Program of Higher Education of China (RFDP) [20113221120007]
- Priority Academic Program from Development of Jiangsu Higher Education Institutions
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One major limiting factor for sediment microbial fuel cells (SMFC) is the low oxygen reduction rate in the cathode. The use of the photosynthetic process of the algae is an effective strategy to increase the oxygen availability to the cathode. In this study, SMFCs were constructed by introducing the algae (Chlorella vulgaris) to the cathode, in order to generate oxygen in situ. Cyclic voltammetry and dissolved oxygen analysis confirmed that C. vulgaris in the cathode can increase the dissolved oxygen concentration and the oxygen reduction rate. We showed that power generation of SMFC with algae-assisted cathode was 21 mW m(-2) and was further increased to 38 mW m(-2) with additional carbon nanotube coating in the cathode, which was 2.4 fold higher than that of the SMFC with bare cathode. This relatively simple method increases the oxygen reduction rate at a low cost and can be applied to improve the performance of SMFCs. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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