Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications

Fiber supercapacitors are promising energy storage devices for wearable applications. However, the fiber supercapacitors are currently limited by the mediocre capacitance performances due to the use of typical carbon materials as anode, sacrificing the volumetric energy density of the whole device....

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Main Authors: Gong, Xuefei, Li, Shaohui, Lee, Pooi See
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/138818
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1388182023-07-14T16:03:08Z Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications Gong, Xuefei Li, Shaohui Lee, Pooi See School of Materials Science & Engineering Science::Chemistry Fiber Supercapacitors Electrodeposition Fiber supercapacitors are promising energy storage devices for wearable applications. However, the fiber supercapacitors are currently limited by the mediocre capacitance performances due to the use of typical carbon materials as anode, sacrificing the volumetric energy density of the whole device. In addition, the inability to undergo washable cycles and poor self-discharge rate prevents the fiber-shaped supercapacitors to be a true energy textile and affects their practicability. Hence, the porous anode electrode FeOOH/PPy@CF has been firstly prepared with a high volumetric capacitance of 30.17 F cm-3, contributing to a high volumetric energy density of 2 mWh cm-3 (based on the whole encapsulated device) for a fiber asymmetric supercapacitor MnO2@CF//FeOOH/PPy@CF in PVA/LiCl. Good flexibility could be exhibited when it was woven into a glove. Desired working voltage and capacity output could be easily obtained when connecting devices in series and parallel. The encapsulated device could worked stably even after they were dipped multiple cycles in different solution and with intensive stirring water that assimilates washing cycles. The self-discharge rate can be mitigated when ionogel electrolyte ([EMIM][TFSI]/FS) was incorporated and further enhanced the energy density to 3.7 mWh/cm-3. The outstanding properties of our assembled asymmetric fiber supercapacitor device is a good candidate for practical wearable energy storage devices. NRF (Natl Research Foundation, S’pore) Accepted version 2020-05-13T03:14:38Z 2020-05-13T03:14:38Z 2017 Journal Article Gong, X., Li, S., & Lee, P. S. (2017). Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications. Nanoscale, 9(30), 10794-10801. doi:10.1039/C7NR02896B 2040-3364 https://hdl.handle.net/10356/138818 10.1039/C7NR02896B 30 9 10794 10801 en Nanoscale © 2017 The Royal Society of Chemistry. All rights reserved. This paper was published in Nanoscale and is made available with permission of The Royal Society of Chemistry. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Chemistry
Fiber Supercapacitors
Electrodeposition
spellingShingle Science::Chemistry
Fiber Supercapacitors
Electrodeposition
Gong, Xuefei
Li, Shaohui
Lee, Pooi See
Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
description Fiber supercapacitors are promising energy storage devices for wearable applications. However, the fiber supercapacitors are currently limited by the mediocre capacitance performances due to the use of typical carbon materials as anode, sacrificing the volumetric energy density of the whole device. In addition, the inability to undergo washable cycles and poor self-discharge rate prevents the fiber-shaped supercapacitors to be a true energy textile and affects their practicability. Hence, the porous anode electrode FeOOH/PPy@CF has been firstly prepared with a high volumetric capacitance of 30.17 F cm-3, contributing to a high volumetric energy density of 2 mWh cm-3 (based on the whole encapsulated device) for a fiber asymmetric supercapacitor MnO2@CF//FeOOH/PPy@CF in PVA/LiCl. Good flexibility could be exhibited when it was woven into a glove. Desired working voltage and capacity output could be easily obtained when connecting devices in series and parallel. The encapsulated device could worked stably even after they were dipped multiple cycles in different solution and with intensive stirring water that assimilates washing cycles. The self-discharge rate can be mitigated when ionogel electrolyte ([EMIM][TFSI]/FS) was incorporated and further enhanced the energy density to 3.7 mWh/cm-3. The outstanding properties of our assembled asymmetric fiber supercapacitor device is a good candidate for practical wearable energy storage devices.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Gong, Xuefei
Li, Shaohui
Lee, Pooi See
format Article
author Gong, Xuefei
Li, Shaohui
Lee, Pooi See
author_sort Gong, Xuefei
title Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
title_short Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
title_full Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
title_fullStr Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
title_full_unstemmed Fiber asymmetric supercapacitor based on FeOOH/PPy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
title_sort fiber asymmetric supercapacitor based on feooh/ppy on carbon fibers as anode electrode with high volumetric energy density for wearable applications
publishDate 2020
url https://hdl.handle.net/10356/138818
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