Pore Structure and Fractal Characteristics of Activated Carbon Fibers Characterized by Using HRTEM

2002 ◽  
Vol 249 (2) ◽  
pp. 453-457 ◽  
Author(s):  
Zheng-Hong Huang ◽  
Feiyu Kang ◽  
Wen Lai Huang ◽  
Jun-Bing Yang ◽  
Kai-Ming Liang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Fractal Characteristics

scholarly journals Preparation, Surface and Pore Structure of High Surface Area Activated Carbon Fibers from Bamboo by Steam Activation

Materials ◽  
2014 ◽  
Vol 7 (6) ◽  
pp. 4431-4441 ◽  
Author(s):  
Xiaojun Ma ◽  
Hongmei Yang ◽  
Lili Yu ◽  
Yin Chen ◽  
Ying Li
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Surface Area ◽  
Carbon Fibers ◽  
High Surface ◽  
High Surface Area ◽  
Activated Carbon Fibers ◽  
Steam Activation

Analysis of pore structure of activated carbon fibers using high resolution transmission electron microscopy and image processing

1995 ◽  
Vol 10 (10) ◽  
pp. 2507-2517 ◽  
Author(s):  
K. Oshida ◽  
K. Kogiso ◽  
K. Matsubayashi ◽  
K. Takeuchi ◽  
S. Kobayashi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Carbon Fibers ◽  
Electronic Materials ◽  
Low Frequency ◽  
Quantitative Information ◽  
Activated Carbon Fibers ◽  
Surface Areas ◽  
Three Samples ◽  
Specific Frequency

Activated carbon fibers (ACF's), already used widely as absorbent materials, are now expected to be useful as new electrical and electronic materials, for their very large specific surface areas (SSA). Chemical adsorption as well as x-ray diffraction have been mainly used for characterizing the ACF structure. While TEM observations reveal the texture of ACF's, such observations have not yet yielded quantitative information about the microstructure. To promote the quantitative interpretation of the TEM images, computer image analysis is used in this work to clarify the pore structure of ACF's. The microstructures of three samples, which are all isotropic pitch-based ACF's but with different SSA values, have been investigated. Operations such as noise reduction, low frequency cut-off filtering, and binary image formation are used to clarify the pore images of the ACF's. The distribution of the ACF porosity size is clearly shown by a frequency analysis of the two-dimensional fast Fourier transform (FFT). The results suggest that TEM images include contributions from many different pore sizes. Pores in different size ranges are extracted by the inverse FFT (IFFT) operation by selecting the specific frequency range, and by-this analysis the pore structure is shown to have fractal characteristics.

Fractal analysis on pore structure for activated carbon fibers

1994 ◽  
Vol 77 (6) ◽  
pp. 98-107 ◽  
Author(s):  
Morinobu Endo ◽  
Kenji Takeuchi ◽  
Yoshihiro Sasuda ◽  
Ken'Ichi Matsubayashi ◽  
Kyoichi Oshida ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Carbon Fibers ◽  
Fractal Analysis ◽  
Activated Carbon Fibers

A high-performance supercapacitor based on activated carbon fibers with an optimized pore structure and oxygen-containing functional groups

2017 ◽  
Vol 1 (5) ◽  
pp. 958-966 ◽  
Author(s):  
Kai Zhu ◽  
Yu Wang ◽  
Joel A. Tang ◽  
Shaohua Guo ◽  
Zhongmin Gao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Functional Groups ◽  
Carbon Fibers ◽  
High Performance ◽  
Cycling Performance ◽  
Activated Carbon Fibers ◽  
Pore Structures

Activated carbon fibers with optimized pore structures and oxygen-containing functional groups display a remarkable capacitance and an excellent cycling performance.

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