期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 564, 期 -, 页码 193-203出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.12.117
关键词
Porous carbons; Hard templating; Carbon dioxide sorption; Supercapacitor
资金
- Basic Science Research Program of the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2018R1D1A1B07043017]
- Hankuk University of Foreign Studies Research Fund of 2019
- National Research Foundation of Korea [2018R1D1A1B07043017] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Three-dimensional (3D) hierarchical porous carbon materials (PCMs) with graphitic carbon walls are facilely prepared through the hard-templating of acid-labile mesoporous ZnOgn(OH)(2) spheres. Furfuryl alcohol or phloroglucinol is employed as a carbon precursor for two hierarchical porous carbon materials (PCM-F and PCM-P). The basic surfaces of ZnOgn(OH)(2) are highly suited to the polymerization of the carbon precursors without extra catalysts. After carbonization followed by mild acid etching, hierarchical PCMs are obtained. These PCMs consist of interconnected turbostratic carbon wall structures. Gas sorption analysis indicates the surface areas of PCM-F and PCM-P are 1013 and 1075 m(2) g(-1), respectively. The corresponding pore volumes are very large, 3.39 and 3.01 cm(3) g(-1), respectively. The uptake abilities for carbon dioxide and hydrogen are investigated at 196 and 77 K, respectively. The PCM-P reveals higher uptake of H-2 (1.19 wt%) and CO2 (282.0 cm(3) g(-1)) than for PCM-F. In contrast, PCM-F shows a high gravimetric specific capacitance of 329.5 F g(-1) based on galvanostatic charge/discharge curves at a current density of 0.1 A g(-1). The PCM-F exhibits stable capacitance retention after 10,000 cycles at a current density of 5 A g(-1). (C) 2019 Elsevier Inc. All rights reserved.
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