A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites
Stretchable and self-healing (SH) energy storage devices are indispensable elements in energy-autonomous electronic skin. However, the current collectors are not self-healable nor intrinsically stretchable, they mostly rely on strain-accommodating structures that require complex processing, are ofte...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/138894 |
| _version_ | 1824456162348630016 |
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| author | Park, Sangbaek Thangavel, Gurunathan Parida, Kaushik Li, Shaohui Lee, Pooi See |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Park, Sangbaek Thangavel, Gurunathan Parida, Kaushik Li, Shaohui Lee, Pooi See |
| author_sort | Park, Sangbaek |
| collection | NTU |
| description | Stretchable and self-healing (SH) energy storage devices are indispensable elements in energy-autonomous electronic skin. However, the current collectors are not self-healable nor intrinsically stretchable, they mostly rely on strain-accommodating structures that require complex processing, are often limited in stretchability, and suffer from low device packing density and fragility. Here, an SH conductor comprising nickel flakes, eutectic gallium indium particles (EGaInPs), and carboxylated polyurethane (CPU) is presented. An energy storage device is constructed by the two SH electrodes assembled with graphene nanoplatelets sandwiching an ionic-liquid electrolyte. An excellent electrochemical healability (94% capacity retention upon restretching at 100% after healing from bifurcation) is unveiled, stemming from the complexation modulated redox behavior of EGaIn in the presence of the ligand bis(trifluoromethanesulfonyl)imide, which enhances the reversible Faradaic reaction of Ga. Self-healing can be achieved where the damaged regions are electrically restored by the flow of liquid metal and mechanically healing activated by the interfacial hydrogen bonding of CPU with an efficiency of 97.5% can be achieved. The SH conductor has an initial conductivity of 2479 S cm-1 that attains a high stretchability with 700% strain, it restores 100% stretchability even after breaking/healing with the electrical healing efficiency of 75%. |
| first_indexed | 2025-02-19T03:49:43Z |
| format | Journal Article |
| id | ntu-10356/138894 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:49:43Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1388942021-02-15T06:26:44Z A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites Park, Sangbaek Thangavel, Gurunathan Parida, Kaushik Li, Shaohui Lee, Pooi See School of Materials Science & Engineering Engineering::Materials Complexation Eutectic Gallium–indium Stretchable and self-healing (SH) energy storage devices are indispensable elements in energy-autonomous electronic skin. However, the current collectors are not self-healable nor intrinsically stretchable, they mostly rely on strain-accommodating structures that require complex processing, are often limited in stretchability, and suffer from low device packing density and fragility. Here, an SH conductor comprising nickel flakes, eutectic gallium indium particles (EGaInPs), and carboxylated polyurethane (CPU) is presented. An energy storage device is constructed by the two SH electrodes assembled with graphene nanoplatelets sandwiching an ionic-liquid electrolyte. An excellent electrochemical healability (94% capacity retention upon restretching at 100% after healing from bifurcation) is unveiled, stemming from the complexation modulated redox behavior of EGaIn in the presence of the ligand bis(trifluoromethanesulfonyl)imide, which enhances the reversible Faradaic reaction of Ga. Self-healing can be achieved where the damaged regions are electrically restored by the flow of liquid metal and mechanically healing activated by the interfacial hydrogen bonding of CPU with an efficiency of 97.5% can be achieved. The SH conductor has an initial conductivity of 2479 S cm-1 that attains a high stretchability with 700% strain, it restores 100% stretchability even after breaking/healing with the electrical healing efficiency of 75%. National Research Foundation (NRF) S.P. and G.T. contributed equally to this work. This research was financially supported by the Competitive Research Programme Award No. NRF-CRP-13-2014-02, NRF-Investigatorship Award No. NRF-NRFI2016-05, and the Campus for Research Excellence and Technological Enterprise (CREATE) programme, under the National Research Foundation, Prime Minister’s Office, Singapore. 2020-05-13T09:10:56Z 2020-05-13T09:10:56Z 2018 Journal Article Park, S., Thangavel, G., Parida, K., Li, S., & Lee, P. S. (2019). A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites. Advanced Materials, 31(1), 1805536-. doi:10.1002/adma.201805536 0935-9648 https://hdl.handle.net/10356/138894 10.1002/adma.201805536 30387213 2-s2.0-85055954690 1 31 en NRF-CRP-13-2014-02 NRF-NRFI2016-05 Advanced Materials © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Engineering::Materials Complexation Eutectic Gallium–indium Park, Sangbaek Thangavel, Gurunathan Parida, Kaushik Li, Shaohui Lee, Pooi See A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title | A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title_full | A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title_fullStr | A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title_full_unstemmed | A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title_short | A stretchable and self‐healing energy storage device based on mechanically and electrically restorative liquid‐metal particles and carboxylated polyurethane composites |
| title_sort | stretchable and self healing energy storage device based on mechanically and electrically restorative liquid metal particles and carboxylated polyurethane composites |
| topic | Engineering::Materials Complexation Eutectic Gallium–indium |
| url | https://hdl.handle.net/10356/138894 |
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