Improving Na+ Diffusion and Performance of P2-Type Layered Na0.6Li0.07Mn0.66Co0.17Ni0.17O2 by Expanding the Interplanar Spacing
Because of their high reversible capacity and wide operation voltage window, P2-type layered transition metal oxides are considered as one type of potential cathode candidate for sodium-ion batteries. However, they still suffer from low kinetics, phase degeneration, and ambiguous mechanism of Na+ diffusion. Here, we synthesized a P2-type Na0.6Li0.07Mn0.66Co0.17Ni0.17O2 with a high Na+ diffusion performance by sintering a nanoplate-structural precursor with alkali metal salt and proposed a possible mechanism for improving Na+ diffusion. The as-prepared P2-type layered oxide presents a quasi-hexagon shape and demonstrates a discharge capacity of 87 mAh g-1 at a current density of 875 mA g-1 (5 C rate), twice that of the sample synthesized from a non-nanoplate particle precursor. Rietveld refinement and results of X-ray photoelectron spectroscopy reveal the probable mechanism that the expanded interplanar spacing along the c-axis orientation would facilitate Na+ diffusion during Na+ intercalation/deintercalation processes, and the expanded interplanar spacing may arise from a high oxidation state of transition metal ions.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:12 |
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| Enthalten in: |
ACS applied materials & interfaces - 12(2020), 43 vom: 28. Okt., Seite 48669-48676 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Qiu, Jinxu [VerfasserIn] |
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| Links: |
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| Themen: |
Interplanar spacing |
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| Anmerkungen: |
Date Revised 29.10.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.0c14931 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM316440043 |
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| 245 | 1 | 0 | |a Improving Na+ Diffusion and Performance of P2-Type Layered Na0.6Li0.07Mn0.66Co0.17Ni0.17O2 by Expanding the Interplanar Spacing |
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| 500 | |a Date Revised 29.10.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Because of their high reversible capacity and wide operation voltage window, P2-type layered transition metal oxides are considered as one type of potential cathode candidate for sodium-ion batteries. However, they still suffer from low kinetics, phase degeneration, and ambiguous mechanism of Na+ diffusion. Here, we synthesized a P2-type Na0.6Li0.07Mn0.66Co0.17Ni0.17O2 with a high Na+ diffusion performance by sintering a nanoplate-structural precursor with alkali metal salt and proposed a possible mechanism for improving Na+ diffusion. The as-prepared P2-type layered oxide presents a quasi-hexagon shape and demonstrates a discharge capacity of 87 mAh g-1 at a current density of 875 mA g-1 (5 C rate), twice that of the sample synthesized from a non-nanoplate particle precursor. Rietveld refinement and results of X-ray photoelectron spectroscopy reveal the probable mechanism that the expanded interplanar spacing along the c-axis orientation would facilitate Na+ diffusion during Na+ intercalation/deintercalation processes, and the expanded interplanar spacing may arise from a high oxidation state of transition metal ions | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Na-ion diffusion | |
| 650 | 4 | |a P2-type layered oxide | |
| 650 | 4 | |a Rietveld refinement | |
| 650 | 4 | |a interplanar spacing | |
| 650 | 4 | |a nanoplate-structural precursor | |
| 650 | 4 | |a soft-templated synthesis | |
| 700 | 1 | |a Chen, Boran |e verfasserin |4 aut | |
| 700 | 1 | |a Hou, Hongying |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xiaojuan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Xiaoyang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zaihuan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Tingting |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Ruicong |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Shuai |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Bao |e verfasserin |4 aut | |
| 700 | 1 | |a Dai, Dongmei |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Bao |e verfasserin |4 aut | |
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