Nano ZrO2 Modification for Enhancement of the Electrochemical Performance of Li-Rich Manganese-Based Cathodic Materials
In this work, high-temperature solid-phase techniques have been used to produce both natural and nano ZrO2-modified Li-rich manganese-based cathodic materials. Several characterizations were carried out to evaluate the morphology, structure, electrical state, and elemental content of unmodified as w...
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 39(2023), 22 vom: 06. Juni, Seite 7723-7730 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2023
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article |
| Résumé: | In this work, high-temperature solid-phase techniques have been used to produce both natural and nano ZrO2-modified Li-rich manganese-based cathodic materials. Several characterizations were carried out to evaluate the morphology, structure, electrical state, and elemental content of unmodified as well as nano-modified Li1.2Ni0.13Co0.13Mn0.54O2. The results of electrochemical tests showed that cathodic materials modified with 0.02 mol nano ZrO2 performed extremely well electrochemically, with initial discharge capacity and coulombic efficiency at 0.1 C reaching up to 308.5 mAh g-1 and 95.38%, respectively. After 170 cycles at 0.2 C, a magnitude of 200.2 mAh g-1 for the final discharge capacity was attained, which translates to a capacity retention of 68.68%. Calculations using density functional theory (DFT) show that adding nanoscale ZrO2 speeds up Li-ion diffusion and increases conductivity by lowering the barrier energy for the migration of Li ions. The structural layout of Li-rich manganese-based cathodic materials may therefore be clarified by the proposed modification technique for nano ZrO2 |
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| Description: | Date Completed 06.06.2023 Date Revised 06.06.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.3c00553 |