Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes
Abstract Despite the enormous interest in high-areal-capacity Li battery electrodes, their structural instability and nonuniform charge transfer have plagued practical application. Herein, we present a cationic semi-interpenetrating polymer network (c-IPN) binder strategy, with a focus on the regula...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-41513-1 |
| _version_ | 1797558212901208064 |
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| author | Jung-Hui Kim Kyung Min Lee Ji Won Kim Seong Hyeon Kweon Hyun-Seok Moon Taeeun Yim Sang Kyu Kwak Sang-Young Lee |
| author_facet | Jung-Hui Kim Kyung Min Lee Ji Won Kim Seong Hyeon Kweon Hyun-Seok Moon Taeeun Yim Sang Kyu Kwak Sang-Young Lee |
| author_sort | Jung-Hui Kim |
| collection | DOAJ |
| description | Abstract Despite the enormous interest in high-areal-capacity Li battery electrodes, their structural instability and nonuniform charge transfer have plagued practical application. Herein, we present a cationic semi-interpenetrating polymer network (c-IPN) binder strategy, with a focus on the regulation of electrostatic phenomena in electrodes. Compared to conventional neutral linear binders, the c-IPN suppresses solvent-drying-induced crack evolution of electrodes and improves the dispersion state of electrode components owing to its surface charge-driven electrostatic repulsion and mechanical toughness. The c-IPN immobilizes anions of liquid electrolytes inside the electrodes via electrostatic attraction, thereby facilitating Li+ conduction and forming stable cathode–electrolyte interphases. Consequently, the c-IPN enables high-areal-capacity (up to 20 mAh cm–2) cathodes with decent cyclability (capacity retention after 100 cycles = 82%) using commercial slurry-cast electrode fabrication, while fully utilizing the theoretical specific capacity of LiNi0.8Co0.1Mn0.1O2. Further, coupling of the c-IPN cathodes with Li-metal anodes yields double-stacked pouch-type cells with high energy content at 25 °C (376 Wh kgcell −1/1043 Wh Lcell –1, estimated including packaging substances), demonstrating practical viability of the c-IPN binder for scalable high-areal-capacity electrodes. |
| first_indexed | 2024-03-10T17:28:06Z |
| format | Article |
| id | doaj.art-1c875638eff64a0cb5b50f7ce720d890 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:28:06Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-1c875638eff64a0cb5b50f7ce720d8902023-11-20T10:06:44ZengNature PortfolioNature Communications2041-17232023-09-0114111310.1038/s41467-023-41513-1Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodesJung-Hui Kim0Kyung Min Lee1Ji Won Kim2Seong Hyeon Kweon3Hyun-Seok Moon4Taeeun Yim5Sang Kyu Kwak6Sang-Young Lee7Department of Chemical and Biomolecular Engineering, Yonsei UniversityDepartment of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)Department of Chemistry, Incheon National UniversityDepartment of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)Department of Chemical and Biomolecular Engineering, Yonsei UniversityDepartment of Chemistry, Incheon National UniversityDepartment of Chemical and Biological Engineering, Korea UniversityDepartment of Chemical and Biomolecular Engineering, Yonsei UniversityAbstract Despite the enormous interest in high-areal-capacity Li battery electrodes, their structural instability and nonuniform charge transfer have plagued practical application. Herein, we present a cationic semi-interpenetrating polymer network (c-IPN) binder strategy, with a focus on the regulation of electrostatic phenomena in electrodes. Compared to conventional neutral linear binders, the c-IPN suppresses solvent-drying-induced crack evolution of electrodes and improves the dispersion state of electrode components owing to its surface charge-driven electrostatic repulsion and mechanical toughness. The c-IPN immobilizes anions of liquid electrolytes inside the electrodes via electrostatic attraction, thereby facilitating Li+ conduction and forming stable cathode–electrolyte interphases. Consequently, the c-IPN enables high-areal-capacity (up to 20 mAh cm–2) cathodes with decent cyclability (capacity retention after 100 cycles = 82%) using commercial slurry-cast electrode fabrication, while fully utilizing the theoretical specific capacity of LiNi0.8Co0.1Mn0.1O2. Further, coupling of the c-IPN cathodes with Li-metal anodes yields double-stacked pouch-type cells with high energy content at 25 °C (376 Wh kgcell −1/1043 Wh Lcell –1, estimated including packaging substances), demonstrating practical viability of the c-IPN binder for scalable high-areal-capacity electrodes.https://doi.org/10.1038/s41467-023-41513-1 |
| spellingShingle | Jung-Hui Kim Kyung Min Lee Ji Won Kim Seong Hyeon Kweon Hyun-Seok Moon Taeeun Yim Sang Kyu Kwak Sang-Young Lee Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes Nature Communications |
| title | Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes |
| title_full | Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes |
| title_fullStr | Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes |
| title_full_unstemmed | Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes |
| title_short | Regulating electrostatic phenomena by cationic polymer binder for scalable high-areal-capacity Li battery electrodes |
| title_sort | regulating electrostatic phenomena by cationic polymer binder for scalable high areal capacity li battery electrodes |
| url | https://doi.org/10.1038/s41467-023-41513-1 |
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