The Synthesis of Nitrogen-Doped Mesoporous Carbon Spheres for Hydrogen Storage

Abstract:

The nitrogen-doped mesoporous carbon spheres have been synthesized via soft-template and hydrothermal synthetic strategies using phenol/formaldehyde resins as carbon sources and melamine as a nitrogen source. The obtained carbon spheres exhibit a spherical morphology with a size range of 3-5 μm, which possess the narrow microporosity (ca. 1.2 nm) and mesoporosity (ca. 4 nm), large surface area (560-1200 m² g^-1) and high nitrogen contents (up to 15.7 wt%). Due to the well-developed porous structure and high nitrogen content, the carbon spheres show high performance for hydrogen storage, and the hydrogen adsorption capacities are in the range of 140-185 cm³ g^-1, which is better than that of most activated carbons. The incorporation of nitrogen into carbons is favored for hydrogen uptake in low pressure.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 864-869
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.864
• Online since: April 2016
• Authors: Zi Qiang Wang, Li Xian Sun, Fen Xu, Xiao Jun Peng
• Keywords: Carbon Spheres, Hydrogen Storage, Hydrothermal, Nitrogen-Doped, Soft Template

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