Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 46, Pages 19914-19919Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta05100a
Keywords
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Funding
- National Natural Science Foundation of China [21103014, 21101017]
- Natural Science Foundation of Jiangsu Province [BE2012591]
- Foundation of Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
- Graduate Innovation Project of Jiangsu Province [CXZZ13_0730]
- Qing Lan Project
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
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Mesoporous graphenes (MGs) were synthesized via a template-assisted pyrolysis approach and employed to fabricate a cathodic diffusion layer for direct methanol fuel cell (DMFC) application. Phenolic polymer-ammonium oleate supramolecular aggregates that formed by weak acid-base interaction induced self-assembly resulted in a solid carbon source. Layered graphitic carbon nitrides (g-C3N4) created under high temperature and a nitrogen gas environment provided the sacrificial template. The MGs were shown to have a specific mesopore surface area of 265.9 m(2) g(-1) with large bimodal mesopore diameters of approximately 4 and 10 nm. Mesopores were generated by the in situ formation and decomposition of a g-C3N4 template. The passive DMFC fabricated by the use of MGs in the cathodic diffusion layer demonstrated a peak power density of 32.9 mW cm(-2), which is approximately 1.2 times higher than that with Vulcan XC-72R carbon black. The outstanding characteristics of MGs as a material that can be used as a porous diffusion layer for DMFCs verify the great potential for use in energy-related fields.
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