Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density
Extensive research efforts have recently been devoted to the development of high-energy-density flexible microsupercapacitors (MSCs) to satisfy the rapidly increasing demands for wearable and portable electronics. However, the widespread application of MSCs in high-energy-consuming personal electron...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/81442 http://hdl.handle.net/10220/50382 |
| _version_ | 1826120764259041280 |
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| author | Zhang, Qichong Zhang, Jun Zhou, Zhenyu Wei, Lei Yao, Yagang |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Qichong Zhang, Jun Zhou, Zhenyu Wei, Lei Yao, Yagang |
| author_sort | Zhang, Qichong |
| collection | NTU |
| description | Extensive research efforts have recently been devoted to the development of high-energy-density flexible microsupercapacitors (MSCs) to satisfy the rapidly increasing demands for wearable and portable electronics. However, the widespread application of MSCs in high-energy-consuming personal electronic devices has been hindered by their low operating voltages and unsatisfactory specific capacitances. Here, we demonstrate a simple and cost-effective cut-and-transfer method to fabricate flexible quasi-solid-state 2.4 V aqueous asymmetric MSCs (AMSCs) by employing hierarchical Na-MnOx nanosheets on 3D nitrogen-doped carbon fibers as the positive electrode and VN nanosheet arrays as the negative electrode. The resulting AMSCs take advantage of the high specific capacitance and wide electrochemical potential spectrum of the electrode materials to yield a remarkable specific capacitance of 109.5 mF cm−2 and admirable energy density of 87.62 μW h cm−2, outperforming most previously reported MSCs. Thus, this work provides a new way to develop high-voltage aqueous AMSCs for next-generation wearable energy-storage devices. |
| first_indexed | 2024-10-01T05:21:45Z |
| format | Journal Article |
| id | ntu-10356/81442 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:21:45Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/814422020-03-07T13:56:08Z Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density Zhang, Qichong Zhang, Jun Zhou, Zhenyu Wei, Lei Yao, Yagang School of Electrical and Electronic Engineering Asymmetric Microsupercapacitors Ultrahigh Energy Density Engineering::Electrical and electronic engineering Extensive research efforts have recently been devoted to the development of high-energy-density flexible microsupercapacitors (MSCs) to satisfy the rapidly increasing demands for wearable and portable electronics. However, the widespread application of MSCs in high-energy-consuming personal electronic devices has been hindered by their low operating voltages and unsatisfactory specific capacitances. Here, we demonstrate a simple and cost-effective cut-and-transfer method to fabricate flexible quasi-solid-state 2.4 V aqueous asymmetric MSCs (AMSCs) by employing hierarchical Na-MnOx nanosheets on 3D nitrogen-doped carbon fibers as the positive electrode and VN nanosheet arrays as the negative electrode. The resulting AMSCs take advantage of the high specific capacitance and wide electrochemical potential spectrum of the electrode materials to yield a remarkable specific capacitance of 109.5 mF cm−2 and admirable energy density of 87.62 μW h cm−2, outperforming most previously reported MSCs. Thus, this work provides a new way to develop high-voltage aqueous AMSCs for next-generation wearable energy-storage devices. MOE (Min. of Education, S’pore) Accepted version 2019-11-11T01:40:31Z 2019-12-06T14:31:04Z 2019-11-11T01:40:31Z 2019-12-06T14:31:04Z 2018 Journal Article Zhang, Q., Zhang, J., Zhou, Z., Wei, L., & Yao, Y. (2018). Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density. Journal of Materials Chemistry A, 6(41), 20145-20151. doi:10.1039/C8TA07727D 2050-7488 https://hdl.handle.net/10356/81442 http://hdl.handle.net/10220/50382 10.1039/C8TA07727D en Journal of Materials Chemistry A © 2018 The Author(s). All rights reserved. This paper was published by Royal Society of Chemistry in Journal of Materials Chemistry A and is made available with permission of The Author(s). 10 p. application/pdf |
| spellingShingle | Asymmetric Microsupercapacitors Ultrahigh Energy Density Engineering::Electrical and electronic engineering Zhang, Qichong Zhang, Jun Zhou, Zhenyu Wei, Lei Yao, Yagang Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title | Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title_full | Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title_fullStr | Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title_full_unstemmed | Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title_short | Flexible quasi-solid-state 2.4 V aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| title_sort | flexible quasi solid state 2 4 v aqueous asymmetric microsupercapacitors with ultrahigh energy density |
| topic | Asymmetric Microsupercapacitors Ultrahigh Energy Density Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/81442 http://hdl.handle.net/10220/50382 |
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