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Title: Chinese ink-facilitated fabrication of paper-based composites as electrodes for supercapacitors
Authors: Yan, Weili
Xiao, Zhuohao
Li, Xiuying
Wu, Xiang
Kong, Ling Bing
Keywords: Engineering::Materials
Issue Date: 2021
Source: Yan, W., Xiao, Z., Li, X., Wu, X. & Kong, L. B. (2021). Chinese ink-facilitated fabrication of paper-based composites as electrodes for supercapacitors. International Journal of Smart and Nano Materials, 12(3), 351-374.
Journal: International Journal of Smart and Nano Materials
Abstract: Commercial Chinese ink was employed to disperse pristine vapor-grown carbon nanofibers (VGCNFs) in aqueous suspensions via horizontal ball milling. The obtained suspension was used to fabricate conductive paper-based composites through filtration-deposition onto filter paper. It was found that the carbon black particles from the Chinese ink helped separate VGCNFs and acted as connection points between the VGCNFs, while the glue reinforced the conduction network. Thus, the VGCNF-ink/paper ternary composite showed sufficiently low sheet resistance. With merely 2.5 mg·cm⁻² VGCNFs, the sheet resistance could be reduced to 4.5 Ω·sq⁻¹. As a proof of concept, these paper-based composites were directly used as electrodes of solid-state symmetric electronic double-layer capacitors (EDLCs) and the substrate for the electrodeposition of MnO₂ to achieve higher electrochemical performances. The EDLCs fabricated with 2.5 mg·cm⁻² VGCNFs showed a specific capacitance of 224 mF·cm⁻² at a current density of 1 mA·cm⁻², which was retained by 86.4% after 10,000 charge-discharge cycles. Moreover, thanks to the high electrical conductivity and the porous structure, the MnO₂ decorated paper-based composites exhibited dramatically enhanced specific capacitance. It is believed that our finding offers an idea to directly utilize commercial Chinese ink for the fabrication of electrode materials.
ISSN: 1947-5411
DOI: 10.1080/19475411.2021.1959463
Rights: © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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