Controlled Synthesis of Ultrathin Hollow Mesoporous Carbon Nanospheres for Supercapacitor Applications

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• 作者：Yihui Dai ; Hao Jiang ; Yanjie Hu ; Yao Fu ; Chunzhong Li
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：February 26, 2014
• 年：2014
• 卷：53
• 期：8
• 页码：3125-3130
• 全文大小：507K
• 年卷期：v.53,no.8(February 26, 2014)
• ISSN：1520-5045

文摘

Ultrathin, uniform and monodisperse hollow mesoporous carbon nanospheres (HMCNs) with a thickness of 3.8 nm have been synthesized. The obtained HMCNs have a high specific surface area (568 m² g^鈥?), large pore volume (1.63 cm³ g^鈥?), and highly accessible mesopores (9.1 nm). Notably, we realized precise control of the shell thickness in the range of ultrathin size (<10 nm). When applied as supercapacitor electrodes, the HMCNs demonstrate impressive capacitive properties, such as high specific capacitance (253 F g^鈥?), excellent rate capability (111 F g^鈥? at 60 A g^鈥?) and outstanding cycling stability (only 3.8% loss after 5000 cycles). The results suggest that the unique structure of HMCNs can allow high rate electrolyte infiltration and rapid ion diffusion. The present findings push forward the development of carbon materials, exhibiting huge potential for applications in energy storage fields.