title: A co-sol-emulsion-gel synthesis of tunable and uniform hollow carbon nanospheres with interconnected mesoporous shells.
abstract: Monodispersed mesoporous hollow spheres of polymer-silica and carbon-silica nanocomposites with an "interpenetration twin" nanostructure have been successfully synthesized by a co-sol-emulsion-gel method. The obtained mesoporous hollow carbon spheres (MHCSs) exhibited an open interconnected mesoporous shell that is endowed with high specific surface area (SBET, 2106-2225 m(2) g(-1)) and large pore volume (1.95-2.53 cm(3) g(-1)). Interestingly, the diameter of the uniform MHCSs could be precisely tuned on demand, as an effective electrode material in supercapacitors, MHCSs with a diameter of 90 nm deliver the shortest time constant (τ0 = 0.75 s), which is highly beneficial for rate capacitance (180 F g(-1) at 100 A g(-1), a full charge-discharge within 0.9 s) and cyclic retainability (3% loss after 20,000 cycles). The newly developed synthesis route leads to unique interconnected mesoporous hollow carbonaceous spheres with open-framework structures, providing a new material platform in energy storage.
authors.affiliation: Research Centre of Materials Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China. cbcao@bit.edu.cn.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Hou
authors.affiliation: Research Centre of Materials Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China. cbcao@bit.edu.cn.
authors.forename: Tai
authors.initials: T
authors.lastname: Cao
authors.affiliation: Research Centre of Materials Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China. cbcao@bit.edu.cn.
authors.forename: Faryal
authors.initials: F
authors.lastname: Idrees
authors.affiliation: Research Centre of Materials Science, Beijing Institute of Technology, Beijing 100081, People's Republic of China. cbcao@bit.edu.cn.
authors.forename: Chuanbao
authors.initials: C
authors.lastname: Cao