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Preparation of chestnut-like carbon and its application for electrodes with high specific capacitance

Paper ID Volume ID Publish Year Pages File Format Full-Text
45884 46426 2014 6 PDF Available
Title
Preparation of chestnut-like carbon and its application for electrodes with high specific capacitance
Abstract

•Chestnut-like structured carbon comprising platelet carbon nanofibers(PCNFs) grown on selective catalytic gasified activated carbon have shown promising results as application for electrodes.•Catalytic gasification results in mesopore expansion at the catalyst surface of the activated carbon.•PCNFs grown on the gasified activated carbon had higher surface areas compared to the PCNFs grown on the non-gasified activated carbon.•When the original activated carbon was impregnated with 0.1% Ni–Fe catalyst at 450 °C, the surface area increased significantly, to 2401.5 m2/g.•Selecting the proper amount of catalyst is important to increase the surface area.

Chestnut-like structured carbon comprising platelet carbon nanofibers(PCNFs) grown on selective catalytic gasified activated carbon have shown promising results as application for electrodes. The Ni–Fe catalyst is generally prepared on the activated carbon by immersion process followed by a reduction of temperature at 350–450 °C. The growth of PCNFs then continue on for a predetermined time through the thermal decomposition of ethylene at 600 °C. The resulting structure, which comprises an intimately connected activated carbon and PCNFs, is shown to offer performance advantages with its specific surface properties and electrochemical characterizations. The mesoporous volume is 0.7564 cm3/g higher than that with purely activated carbon (0.1220 cm3/g). The specific surface area is 2401 m2/g higher than those with purely activated carbon (1800 m2/g). The specific capacitance is 136.86 F/cm3 higher than those with P-60.

Graphical abstractChestnut-like structured carbon comprising platelet carbon nanofibers(PCNFs) grown on selective catalytic gasified activated carbon have shown promising results as application for electrodes.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Carbon nanofibers; Catalytic gasification; Specific capacitance
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Preparation of chestnut-like carbon and its application for electrodes with high specific capacitance
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 158–159, October 2014, Pages 308–313
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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