Effect of pore packing defects in 2-D ordered mesoporous carbons on ionic transport

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	Effect of pore packing defects in 2-D ordered mesoporous carbons on ionic transport
	D. W. Wang; F. Li; H. T. Fang; M. Liu; G. Q. Lu; H. M. Cheng
	2006
发表期刊	Journal of Physical Chemistry B
ISSN	1520-6106
卷号	110 期号:17 页码:8570-8575
摘要	Ordered mesoporous materials show great importance in energy, environmental, and chemical engineering. The diffusion of guest species in mesoporous networks plays an important role in these applications, especially for energy storage, such as supercapacitors based on ordered mesoporous carbons ( OMCs). The ion diffusion behavior in two different 2-D hexagonal OMCs was investigated by using cyclic voltametry and electrochemical impedance spectroscopy. In addition, transmission electron microscopy, small-angle X-ray diffraction, and nitrogen cryosorption methods were used to study the pore structure variations of these two OMCs. It was found that, for the OMC with defective pore channels ( termed as pore packing defects), the gravimetric capacitance was greatly decayed when the voltage scan rate was increased. The experimental results suggest that, for the ion diffusion in 2-D hexagonal OMCs with similar mesopore size distribution, the pore packing defect is a dominant dynamic factor.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china. univ queensland, sch engn, australian res council ctr funct nanomat, brisbane, qld 4072, australia.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Electrochemical Impedance Spectroscopy Double-layer Capacitors Templating Procedure Porous-electrodes Activated Carbons Size Distribution
URL	查看原文
WOS记录号	WOS:000237409500009
引用统计	被引频次：145[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34498
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. W. Wang,F. Li,H. T. Fang,et al. Effect of pore packing defects in 2-D ordered mesoporous carbons on ionic transport[J]. Journal of Physical Chemistry B,2006,110(17):8570-8575.
APA	D. W. Wang,F. Li,H. T. Fang,M. Liu,G. Q. Lu,&H. M. Cheng.(2006).Effect of pore packing defects in 2-D ordered mesoporous carbons on ionic transport.Journal of Physical Chemistry B,110(17),8570-8575.
MLA	D. W. Wang,et al."Effect of pore packing defects in 2-D ordered mesoporous carbons on ionic transport".Journal of Physical Chemistry B 110.17(2006):8570-8575.