Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 19, Pages 8852-8856Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cp02290j
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Funding
- NNSFC [50802116, 50972167]
- Specialized Research Fund for the Doctoral Program of Higher Education [200805581014]
- Demonstration Base of Department of Education of Guangdong Province [cgzhzd0901]
- Fundamental Research Funds for the Central Universities [09lgpy18]
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A unique hierarchical architecture is successfully constructed in a wormhole-like mesopore structure via a multiple nanocasting route. This novel type of hierarchical porous carbon (HPC) consists of three-dimensional ordered macropores (ca. 150 nm) with interconnecting pore windows, and the walls of these macropores are rich in wormhole-like mesopores (ca. 2.7 nm) and large spherical mesopores (ca. 10 nm), as well as a significant microporosity, presenting a macro-meso-microporous structure with a three-dimensional interconnectivity. Such a hierarchically porous structure may provide fine diffusion pathways for reaction species, which is demonstrated by the experimental result of an enhanced performance in a supercapacitor. For example, with the introduction of a hierarchical porous structure for fast transport and effective access of ions, the as-prepared HPC exhibits a specific capacitance as high as 247 F g(-1), whereas traditional wormhole-like mesoporous carbon has only a specific capacitance of 176 F g(-1)
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