Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 17, Pages 6342-6349Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta00992a
Keywords
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Funding
- National Natural Science Foundation of China [21403306, 21273290, 21475022, 21375016]
- Guangdong Natural Science Foundation for Distinguished Young Scholar [2014A030306048]
- Fundamental Research Foundations for the Central Universities [15lgpy24]
- Science and Technology Planning Project of Guangdong Province [2015B090927007]
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion [MTEC-2015M05]
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Three dimensional graphene-based frameworks (3DGFs) hold great promise for microbial fuel cells (MFCs) due to their macroporous structure, outstanding electrical conductivity, high surface area and prominent biocompatibility. Nevertheless, the large-scale application of currently developed 3DGFs, especially monolithic 3DGFs, is hindered by their complex and high-cost process which is hard to scale up. Herein, monolithic three-dimensional graphene frameworks (3DGFs) have been developed via a simple, scalable and effective electrochemical exfoliation approach and demonstrated as high-performance anodes for MFCs. Benefiting from the macroporous networks, excellent conductivity and superior electrocatalytic activity, the monolithic 3DGF electrode facilitates efficient mass transfer and effective electron transport. Furthermore, the MFC device based on the 3DGFs achieved remarkable output power densities of 17.9 W m(-3) and 897.1 mW m(-2).
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