Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors
Fiber-shaped aqueous lithium-ion capacitors (FALICs) featured with high energy and power densities together with outstanding safety characteristics are emerging as promising electrochemical energy-storage devices for future portable and wearable electronics. However, the lack of high-capacitance fib...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/154416 |
| _version_ | 1824455197799219200 |
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| author | Man, Ping Zhang, Qichong Zhou, Z. Chen, Mengxiao Yang, Jiao Wang, Zhe Wang, Zhixun He, B. Li, Q. Gong, W. Lu, W. Yao, Y. Wei, Lei |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Man, Ping Zhang, Qichong Zhou, Z. Chen, Mengxiao Yang, Jiao Wang, Zhe Wang, Zhixun He, B. Li, Q. Gong, W. Lu, W. Yao, Y. Wei, Lei |
| author_sort | Man, Ping |
| collection | NTU |
| description | Fiber-shaped aqueous lithium-ion capacitors (FALICs) featured with high energy and power densities together with outstanding safety characteristics are emerging as promising electrochemical energy-storage devices for future portable and wearable electronics. However, the lack of high-capacitance fibrous anodes is a major bottleneck to achieve high performance FALICs. Here, hierarchical MoS2@α-Fe2O3 core–shell heterostructures consisting of spindle-shaped α-Fe2O3 cores and MoS2 nanosheet shells on a carbon nanotube fiber (CNTF) are successfully fabricated. Originating from the unique core/shell architecture and prominent synergetic effects for multi-components, the resulting MoS2@α-Fe2O3/CNTF anode delivers a remarkable specific capacitance of 2077.5 mF cm−2 (554.0 F cm−3) at 2 mA cm−2, substantially outperforming most of the previously reported fibrous anode materials. Further density functional theory calculations reveal that the MoS2@α-Fe2O3 nano-heterostructure possesses better electrical conductivity and stronger adsorption energy of Li+ than those of the individual MoS2 and α-Fe2O3. By paring with the self-standing LiCoO2/CNTF battery-type cathode, a prototype quasi-solid-state FALIC with a maximum operating voltage of 2.0 V is constructed, achieving impressive specific capacitance (253.1 mF cm−2) and admirable energy density (39.6 mWh cm−3). Additionally, the newly developed FALICs can be woven into the flexible textile to power wearable electronics. This work presents a novel effective strategy to design high-performance anode materials for next-generation wearable ALICs. |
| first_indexed | 2025-02-19T03:34:23Z |
| format | Journal Article |
| id | ntu-10356/154416 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:34:23Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1544162021-12-22T06:19:08Z Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors Man, Ping Zhang, Qichong Zhou, Z. Chen, Mengxiao Yang, Jiao Wang, Zhe Wang, Zhixun He, B. Li, Q. Gong, W. Lu, W. Yao, Y. Wei, Lei School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Aqueous Lithium-Ion Capacitors Core-Shell Heterostructures Fiber-shaped aqueous lithium-ion capacitors (FALICs) featured with high energy and power densities together with outstanding safety characteristics are emerging as promising electrochemical energy-storage devices for future portable and wearable electronics. However, the lack of high-capacitance fibrous anodes is a major bottleneck to achieve high performance FALICs. Here, hierarchical MoS2@α-Fe2O3 core–shell heterostructures consisting of spindle-shaped α-Fe2O3 cores and MoS2 nanosheet shells on a carbon nanotube fiber (CNTF) are successfully fabricated. Originating from the unique core/shell architecture and prominent synergetic effects for multi-components, the resulting MoS2@α-Fe2O3/CNTF anode delivers a remarkable specific capacitance of 2077.5 mF cm−2 (554.0 F cm−3) at 2 mA cm−2, substantially outperforming most of the previously reported fibrous anode materials. Further density functional theory calculations reveal that the MoS2@α-Fe2O3 nano-heterostructure possesses better electrical conductivity and stronger adsorption energy of Li+ than those of the individual MoS2 and α-Fe2O3. By paring with the self-standing LiCoO2/CNTF battery-type cathode, a prototype quasi-solid-state FALIC with a maximum operating voltage of 2.0 V is constructed, achieving impressive specific capacitance (253.1 mF cm−2) and admirable energy density (39.6 mWh cm−3). Additionally, the newly developed FALICs can be woven into the flexible textile to power wearable electronics. This work presents a novel effective strategy to design high-performance anode materials for next-generation wearable ALICs. Ministry of Education (MOE) National Research Foundation (NRF) This work was supported in part by the Singapore Ministry of Education Academic Research Fund Tier 2 (MOE2019-T2-2-127), the Singapore Ministry of Education Academic Research Fund Tier 1 (MOE2019-T1-001-103 and MOE2019-T1-001-111) and the Singapore National Research Foundation Competitive Research Program (NRF-CRP18-2017-02). This work was also supported in part by the National Natural Science Foundation of China (No. 51972162) and Nanyang Technological University. Dr. W. Gong was grateful to the support from the Natural Science Foundation of Jiangsu Province (BK20190228) and Guangdong Basic and Applied Basic Research Foundation (2019A1515110859).Conflict of InterestThe authors declare no conflict of interest.Keywordsaqueous lithium-ion capacitors, core–shell heterostructures, fiber electronics, pseudocapacitive anode, self-standing electrodesReceived: May 7, 2020Revised: June 3, 2020Published online: July 6, 2020Adv. Funct. Mater.2020, 30, 2003967 2021-12-22T06:19:08Z 2021-12-22T06:19:08Z 2020 Journal Article Man, P., Zhang, Q., Zhou, Z., Chen, M., Yang, J., Wang, Z., Wang, Z., He, B., Li, Q., Gong, W., Lu, W., Yao, Y. & Wei, L. (2020). Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors. Advanced Functional Materials, 30(36), 2003967-. https://dx.doi.org/10.1002/adfm.202003967 1616-301X https://hdl.handle.net/10356/154416 10.1002/adfm.202003967 2-s2.0-85087441129 36 30 2003967 en MOE2019-T2-2-127 MOE2019-T1-001-103 MOE2019-T1-001-11 NRF-CRP18-2017-0 Advanced Functional Materials © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Aqueous Lithium-Ion Capacitors Core-Shell Heterostructures Man, Ping Zhang, Qichong Zhou, Z. Chen, Mengxiao Yang, Jiao Wang, Zhe Wang, Zhixun He, B. Li, Q. Gong, W. Lu, W. Yao, Y. Wei, Lei Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title | Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title_full | Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title_fullStr | Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title_full_unstemmed | Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title_short | Engineering MoS2 nanosheets on spindle-like α-Fe2O3 as high-performance core–shell pseudocapacitive anodes for fiber-shaped aqueous lithium-ion capacitors |
| title_sort | engineering mos2 nanosheets on spindle like α fe2o3 as high performance core shell pseudocapacitive anodes for fiber shaped aqueous lithium ion capacitors |
| topic | Engineering::Electrical and electronic engineering Aqueous Lithium-Ion Capacitors Core-Shell Heterostructures |
| url | https://hdl.handle.net/10356/154416 |
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