A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual
This work developed a cost-effective and environmentally benign method for preparing high electrical conductivity carbon nanofibers (CNFs) from coal extraction residuals. The electrical conductivity of the CNFs prepared with PAN and 10.00 wt%, 30.00 wt%, and 50.00 wt% residual extracted tar (RET) in...
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doaj-981bca95c55449aaaacab0ae35ac41102021-09-11T04:30:46ZengElsevierCleaner Engineering and Technology2666-79082021-10-014100109A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residualWenyang Lu0Tongtong Wang1Xin He2Kaidi Sun3Zaixing Huang4Gang Tan5Eric G. Eddings6Hertanto Adidharma7Maohong Fan8Department of Chemical Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Chemical Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Chemical Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Chemical Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Chemical Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Civil Engineering, University of Wyoming, Laramie, WY, 82071, USADepartment of Chemical Engineering, University of Utah, Salt Lake City, UT, 84112, USADepartments of Chemical & Petroleum Engineering, University of Wyoming, Laramie, WY, 82071, USADepartments of Chemical & Petroleum Engineering, University of Wyoming, Laramie, WY, 82071, USA; School of Energy of Resource, University of Wyoming, Laramie, WY, 82071, USA; School of Civil & Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA; Corresponding author. Departments of Chemical & Petroleum Engineering, University of Wyoming, Laramie, WY, 82071, USA.This work developed a cost-effective and environmentally benign method for preparing high electrical conductivity carbon nanofibers (CNFs) from coal extraction residuals. The electrical conductivity of the CNFs prepared with PAN and 10.00 wt%, 30.00 wt%, and 50.00 wt% residual extracted tar (RET) increases by 70.89%, 164.31%, and 193.22% in comparison with conventional pure PAN-based CNF at the carbonization temperature of 1000 °C. The results of electrochemical impedance spectroscopy have shown that the total resistance for 50.00 wt% and 30.00 wt% RET-based CNFs prepared at the reaction temperature of 1000 °C was 0.61 Ω and 0.73 Ω, respectively, which is lower than that of coal extracted tar (CET)-based CNF and PAN-based CNFs. Raman analysis indicates that the 50.00 wt% RET-based CNF shows the lowest relative intensity of −0.953 and the highest degree of the ordered carbon structure. According to SEM results, fewer defects were observed in the carbon structure of RET-based CNFs. The cross-linking structure in 50.00 wt% RET can contribute to the improvement of the electrical conductivity of CNFs, which is consistent with the observation of Raman results. The GC-MS analysis results reveal that the aromatic and phenolic concentration in RET is 37.91% and 176.69% higher compared with those in CET. Both aromatic and phenolic concentrations in CNF precursor favor the formation of CNFs with fewer defects and thus lead to a higher electrical conductivity in CNF. The GC-MS results present consistency with those of Raman, SEM, and electrochemical performance measurements.http://www.sciencedirect.com/science/article/pii/S2666790821000690Electrical conductivityCarbon nanofiberCoalCost-effectiveProcess-clean |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wenyang Lu Tongtong Wang Xin He Kaidi Sun Zaixing Huang Gang Tan Eric G. Eddings Hertanto Adidharma Maohong Fan |
spellingShingle |
Wenyang Lu Tongtong Wang Xin He Kaidi Sun Zaixing Huang Gang Tan Eric G. Eddings Hertanto Adidharma Maohong Fan A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual Cleaner Engineering and Technology Electrical conductivity Carbon nanofiber Coal Cost-effective Process-clean |
author_facet |
Wenyang Lu Tongtong Wang Xin He Kaidi Sun Zaixing Huang Gang Tan Eric G. Eddings Hertanto Adidharma Maohong Fan |
author_sort |
Wenyang Lu |
title |
A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
title_short |
A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
title_full |
A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
title_fullStr |
A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
title_full_unstemmed |
A new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
title_sort |
new method for preparing excellent electrical conductivity carbon nanofibers from coal extraction residual |
publisher |
Elsevier |
series |
Cleaner Engineering and Technology |
issn |
2666-7908 |
publishDate |
2021-10-01 |
description |
This work developed a cost-effective and environmentally benign method for preparing high electrical conductivity carbon nanofibers (CNFs) from coal extraction residuals. The electrical conductivity of the CNFs prepared with PAN and 10.00 wt%, 30.00 wt%, and 50.00 wt% residual extracted tar (RET) increases by 70.89%, 164.31%, and 193.22% in comparison with conventional pure PAN-based CNF at the carbonization temperature of 1000 °C. The results of electrochemical impedance spectroscopy have shown that the total resistance for 50.00 wt% and 30.00 wt% RET-based CNFs prepared at the reaction temperature of 1000 °C was 0.61 Ω and 0.73 Ω, respectively, which is lower than that of coal extracted tar (CET)-based CNF and PAN-based CNFs. Raman analysis indicates that the 50.00 wt% RET-based CNF shows the lowest relative intensity of −0.953 and the highest degree of the ordered carbon structure. According to SEM results, fewer defects were observed in the carbon structure of RET-based CNFs. The cross-linking structure in 50.00 wt% RET can contribute to the improvement of the electrical conductivity of CNFs, which is consistent with the observation of Raman results. The GC-MS analysis results reveal that the aromatic and phenolic concentration in RET is 37.91% and 176.69% higher compared with those in CET. Both aromatic and phenolic concentrations in CNF precursor favor the formation of CNFs with fewer defects and thus lead to a higher electrical conductivity in CNF. The GC-MS results present consistency with those of Raman, SEM, and electrochemical performance measurements. |
topic |
Electrical conductivity Carbon nanofiber Coal Cost-effective Process-clean |
url |
http://www.sciencedirect.com/science/article/pii/S2666790821000690 |
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