Journal
NANO ENERGY
Volume 61, Issue -, Pages 533-539Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2019.05.001
Keywords
Electrocatalysis; Oxygen reduction reaction; Carbon nanomaterials; Microbial fuel cells
Categories
Funding
- China Postdoctoral Science Foundation [2017M621287, 2017M621265]
- Open Foundation of MOE Key Laboratory of Micro-Systems and Micro-Structures Manufacturing [2017KM004]
- Economic, Trade and Information Commission of Shenzhen Municipality through the Graphene Manufacture Innovation Center [201901161514]
- Shenzhen Science and Technology Innovation Committee [JCYJ20151013162733704]
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A microbial fuel cell (MFC) is a bio-electrochemical device that convert the chemical energy to electrical energy by the oxidation of microorganisms at bioanode, while its powder generation is largely depending on the activity and durability of cathode catalysts. In this work, we report the design and synthesis of N-doped carbon nanotubes/reduced graphene oxide (rGO) nanosheet hybrids with mixed-dimensional characteristics as high-performance oxygen reduction reaction catalyst for cost-saving MFCs. Co-glycolate nanoparticles uniformly coated on rGO nanosheets are reduced to Co nanoparticles, acting as catalysts for the catalyst mediated growth of carbon nanotubes with abundant metal-nitrogen-carbon active sites. The half-wave potential of hybrid electrocatalyst are 0.859 V (vs RHE), comparable to that of benchmark Pt/C. A maximum power density of 1329 mW cm(-2), 1.37 times higher than that of commercial Pt/C catalyst, is achieved in single-chamber MFCs using optimized hybrid electrocatalysts.
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