title: Construction of a hierarchical architecture in a wormhole-like mesostructure for enhanced mass transport.
abstract: 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).
authors: Materials Science Institute, PCFM Laboratory, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China.
authors: Yeru
authors: Y
authors: Liang
authors: Fengxue
authors: F
authors: Liang
authors: Dingcai
authors: D
authors: Wu
authors: Zhenghui
authors: Z
authors: Li
authors: Fei
authors: F
authors: Xu
authors: Ruowen
authors: R
authors: Fu