文档介绍：
Controlled Synthesis of Ultrathin Hollow Mesoporous
Carbon Nanospheres for Supercapacitor Applications#
DAI Yihui, JIANG Hao, HU Yanjie, FU Yao, LUO Meifang, LI Chunzhong**
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(Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science
and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai
200237, China)
Abstract: In this paper, ultrathin, uniform and monodisperse hollow mesoporous carbon nanospheres
(s) with a thickness of ~ nm have been synthesized by using dopamine as a carbon source.
The obtained s have a high specific surface area (568 m2 g−1), large pore volume ( cm3
g−1), and highly accessible big mesopores (~ nm). Notably, we realized the precise control of the
shell thickness in a range of < 10 nm only by tuning dopamine content. The as-obtained s, when
applied as supercapacitor electrodes, demonstrate an impressive capacitive properties in 1 M H2SO4
aqueous solution, such as high specific capacitance (253 F g−1), excellent rate capability (111 F g−1 at
60 A g−1) and outstanding cycling stability (only % loss after 5000 cycles). The results suggest that
the unique structure of the s can allow high rate of electrolyte infiltration, as well as rapid ion
diffusion. The present findings push forward the development of carbon materials, exhibi