Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 5, Pages 1632-1636Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta06673e
Keywords
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Funding
- National Natural Science Foundation of China [21477120, 51538012]
- Program for Changjiang Scholars and Innovative Research Team in University
- Collaborative Innovation Center of Suzhou Nano Science and Technology of the Ministry of Education of China
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A microbial fuel cell (MFC) is an emerging technology to harvest electricity from waste, but generally suffers from low power density at the present stage. Especially, the poor cathode performance usually presents a limiting factor. In this work, we prepare a novel cathode material for an MFC by growing vertically-aligned nitrogen-doped carbon nanotubes (N-CNTs) on carbon cloth (CC) using a chemical vapor deposition method, and evaluate its performance in MFC tests. The results show that the MFC with the N-CNT-CC as its cathode exhibits an output power density of 542 mW m(-3), greater than that of the MFC with the Pt/C-coated CC cathode. The electrochemical experimental results show higher catalytic activity for oxygen reduction and a smaller resistance of the N-CNT-CC electrode, compared to those of the Pt/C-CC, which are responsible for its better MFC performance. The N-CNT-CC material prepared in this work may offer an appealing metal-free and low-cost alternative to Pt/C for MFC cathode applications.
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