Thermal-Assisted Dry Coating Electrode Unlocking Sustainable and High-Performance Batteries
© 2024 Wiley‐VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 24. Nov., Seite e2410974 |
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| Weitere Verfasser: | , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2024
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article Li metal battery Li‐ and Mn‐rich cathode dry coating electrode electron transport sufficient Li+ thermal‐assistant distribution |
| Zusammenfassung: | © 2024 Wiley‐VCH GmbH. Current battery production relies on the use of large amounts of N-methyl-2-pyrrolidnone (NMP) solvent during electrode preparation, which raises serious concerns in material cost, energy consumption, and toxicity, thus demanding the innovation of dry electrodes with excellent performance. However, state-of-the-art dry electrodes show inferior energy densities, particularly under high-areal-capacity and fast charge/discharge conditions required for practical applications. Here dry production of high-energy-density Li- and Mn-rich (LMR) cathodes is shown based on a thermal-assistant approach. The lithium difluoro(oxalate)borate (LiDFOB) and succinonitrile (SN) serve as two key electrode mediators to facilitate Li+ transport, and the mild heating process for melting SN-LiDFOB has significantly improved the distribution of various components in the electrode. These synergistic effects enable dry LMR cathodes with a maximum rate capability of 4 C (12 mA cm-2) and an areal capacity of 11.0 mAh cm-2. The resulting Li metal/LMR full cell exhibits the maximum energy and power densities of 609 Wh kg-1 and 2,183 W kg-1, respectively, based on the total mass of the cathode and anode. These results not only break through the key bottleneck in energy density for dry electrodes but, in a broader context, open a new avenue for green and sustainable battery production |
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| Beschreibung: | Date Revised 24.11.2024 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202410974 |