Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries
Abstract Deformable lithium‐ion batteries (LIBs) can serve as the main power sources for flexible and wearable electronics owing to their high energy capacity, reliability, and durability. The pivotal role of cathodes in LIB performance necessitates the development of mechanically free‐standing and...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-04-01
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| Series: | EcoMat |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/eom2.12443 |
| _version_ | 1797215080358608896 |
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| author | Sung Hyuk Park Yong Woon Lee Da Eun Kim Kyung Gook Cho Min Su Kim Dong Hyun Park Junyoung Mun Keun Hyung Lee |
| author_facet | Sung Hyuk Park Yong Woon Lee Da Eun Kim Kyung Gook Cho Min Su Kim Dong Hyun Park Junyoung Mun Keun Hyung Lee |
| author_sort | Sung Hyuk Park |
| collection | DOAJ |
| description | Abstract Deformable lithium‐ion batteries (LIBs) can serve as the main power sources for flexible and wearable electronics owing to their high energy capacity, reliability, and durability. The pivotal role of cathodes in LIB performance necessitates the development of mechanically free‐standing and stretchable cathodes. This study demonstrates a promising strategy to generate deformable cathodes with electrical conductivity by forming 3D interconnected elastomeric networks. Beginning with a physically crosslinked polymer network using poly(vinylidene fluoride‐co‐hexafluoropropylene) and 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]), subsequent exchange with a 1 M LiPF6 electrolyte imparts elastic characteristics to the cathodes. The resulting LiFePO4 composite electrodes maintained their resistance under 500 consecutive bending cycles at an extremely small bending radius of 1.8 mm and showed high discharge capacity of 158 mAh g−1 with stable potential plateaus in charging and discharging curves. Moreover, flexible cells utilizing the composite electrodes exhibited superior operational stability under rolling, bending, and folding deformations. |
| first_indexed | 2024-04-24T11:24:23Z |
| format | Article |
| id | doaj.art-3c04afcf5c8b4fdc9c623504f1ab11d7 |
| institution | Directory Open Access Journal |
| issn | 2567-3173 |
| language | English |
| last_indexed | 2024-04-24T11:24:23Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | EcoMat |
| spelling | doaj.art-3c04afcf5c8b4fdc9c623504f1ab11d72024-04-10T23:16:34ZengWileyEcoMat2567-31732024-04-0164n/an/a10.1002/eom2.12443Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteriesSung Hyuk Park0Yong Woon Lee1Da Eun Kim2Kyung Gook Cho3Min Su Kim4Dong Hyun Park5Junyoung Mun6Keun Hyung Lee7Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaSchool of Advanced Materials Science and Engineering, SKKU Institute of Energy Science and Technology (SIEST) Sungkyunkwan University Suwon Republic of KoreaDepartment of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials Inha University Incheon Republic of KoreaAbstract Deformable lithium‐ion batteries (LIBs) can serve as the main power sources for flexible and wearable electronics owing to their high energy capacity, reliability, and durability. The pivotal role of cathodes in LIB performance necessitates the development of mechanically free‐standing and stretchable cathodes. This study demonstrates a promising strategy to generate deformable cathodes with electrical conductivity by forming 3D interconnected elastomeric networks. Beginning with a physically crosslinked polymer network using poly(vinylidene fluoride‐co‐hexafluoropropylene) and 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]), subsequent exchange with a 1 M LiPF6 electrolyte imparts elastic characteristics to the cathodes. The resulting LiFePO4 composite electrodes maintained their resistance under 500 consecutive bending cycles at an extremely small bending radius of 1.8 mm and showed high discharge capacity of 158 mAh g−1 with stable potential plateaus in charging and discharging curves. Moreover, flexible cells utilizing the composite electrodes exhibited superior operational stability under rolling, bending, and folding deformations.https://doi.org/10.1002/eom2.12443elastomeric networkelectrolyte exchangeflexible batterylithium‐ion batterystretchable cathode |
| spellingShingle | Sung Hyuk Park Yong Woon Lee Da Eun Kim Kyung Gook Cho Min Su Kim Dong Hyun Park Junyoung Mun Keun Hyung Lee Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries EcoMat elastomeric network electrolyte exchange flexible battery lithium‐ion battery stretchable cathode |
| title | Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries |
| title_full | Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries |
| title_fullStr | Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries |
| title_full_unstemmed | Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries |
| title_short | Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium‐ion batteries |
| title_sort | highly conductive and mechanically robust composite cathodes based on 3d interconnected elastomeric networks for deformable lithium ion batteries |
| topic | elastomeric network electrolyte exchange flexible battery lithium‐ion battery stretchable cathode |
| url | https://doi.org/10.1002/eom2.12443 |
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