Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub>
This work presents a contribution to the study of a new Ni-rich spinel cathode material, LiNiMnO<sub>4</sub>, for Li-ion batteries operating in the 5-V region. The LiNiMnO<sub>4</sub> compound was synthesized by a sol-gel method assisted by ethylene diamine tetra-acetic acid...
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MDPI AG
2021-02-01
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| Series: | Electrochem |
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| Online Access: | https://www.mdpi.com/2673-3293/2/1/9 |
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| author | Tianyi Li Kai Chang Ahmed M. Hashem Ashraf E. Abdel-Ghany Rasha S. El-Tawil Hua Wang Hazim El-Mounayri Andres Tovar Likun Zhu Christian M. Julien |
| author_facet | Tianyi Li Kai Chang Ahmed M. Hashem Ashraf E. Abdel-Ghany Rasha S. El-Tawil Hua Wang Hazim El-Mounayri Andres Tovar Likun Zhu Christian M. Julien |
| author_sort | Tianyi Li |
| collection | DOAJ |
| description | This work presents a contribution to the study of a new Ni-rich spinel cathode material, LiNiMnO<sub>4</sub>, for Li-ion batteries operating in the 5-V region. The LiNiMnO<sub>4</sub> compound was synthesized by a sol-gel method assisted by ethylene diamine tetra-acetic acid (EDTA) as a chelator. Structural analyses carried out by Rietveld refinements and Raman spectroscopy, selected area electron diffraction (SAED) and X-ray photoelectron (XPS) spectroscopy reveal that the product is a composite (LNM@NMO), including non-stoichiometric LiNiMnO<sub>4-δ</sub> spinel and a secondary Ni<sub>6</sub>MnO<sub>8</sub> cubic phase. Cyclic voltammetry and galvanostatic charge-discharge profiles show similar features to those of LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> bare. A comparison of the electrochemical performances of 4-V spinel LiMn<sub>2</sub>O<sub>4</sub> and 5-V spinel LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> with those of LNM@NMO composite demonstrates the long-term cycling stability of this new Ni-rich spinel cathode. Due to the presence of the secondary phase, the LNM@NMO electrode exhibits an initial specific capacity as low as 57 mAh g<sup>−1</sup> but shows an excellent electrochemical stability at 1C rate for 1000 cycles with a capacity decay of 2.7 × 10<sup>−3</sup> mAh g<sup>−1</sup> per cycle. |
| first_indexed | 2024-03-09T00:41:04Z |
| format | Article |
| id | doaj.art-dc3053e740fe417a9d60e70d5c9f80b3 |
| institution | Directory Open Access Journal |
| issn | 2673-3293 |
| language | English |
| last_indexed | 2024-03-09T00:41:04Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electrochem |
| spelling | doaj.art-dc3053e740fe417a9d60e70d5c9f80b32023-12-11T17:49:54ZengMDPI AGElectrochem2673-32932021-02-01219511710.3390/electrochem2010009Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub>Tianyi Li0Kai Chang1Ahmed M. Hashem2Ashraf E. Abdel-Ghany3Rasha S. El-Tawil4Hua Wang5Hazim El-Mounayri6Andres Tovar7Likun Zhu8Christian M. Julien9Department of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USADepartment of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USAInorganic Chemistry Department, National Research Centre, 33 El Bohouth St., (former El Tahrir St.), Dokki-Giza 12622, EgyptInorganic Chemistry Department, National Research Centre, 33 El Bohouth St., (former El Tahrir St.), Dokki-Giza 12622, EgyptInorganic Chemistry Department, National Research Centre, 33 El Bohouth St., (former El Tahrir St.), Dokki-Giza 12622, EgyptDepartment of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USADepartment of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USADepartment of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USADepartment of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USAInstitut de Minéralogie, de Physique des Matériaux et Cosmologie (IMPMC), Sorbonne Université, UMR-CNRS 7590, 4 Place Jussieu, 75752 Paris, FranceThis work presents a contribution to the study of a new Ni-rich spinel cathode material, LiNiMnO<sub>4</sub>, for Li-ion batteries operating in the 5-V region. The LiNiMnO<sub>4</sub> compound was synthesized by a sol-gel method assisted by ethylene diamine tetra-acetic acid (EDTA) as a chelator. Structural analyses carried out by Rietveld refinements and Raman spectroscopy, selected area electron diffraction (SAED) and X-ray photoelectron (XPS) spectroscopy reveal that the product is a composite (LNM@NMO), including non-stoichiometric LiNiMnO<sub>4-δ</sub> spinel and a secondary Ni<sub>6</sub>MnO<sub>8</sub> cubic phase. Cyclic voltammetry and galvanostatic charge-discharge profiles show similar features to those of LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> bare. A comparison of the electrochemical performances of 4-V spinel LiMn<sub>2</sub>O<sub>4</sub> and 5-V spinel LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> with those of LNM@NMO composite demonstrates the long-term cycling stability of this new Ni-rich spinel cathode. Due to the presence of the secondary phase, the LNM@NMO electrode exhibits an initial specific capacity as low as 57 mAh g<sup>−1</sup> but shows an excellent electrochemical stability at 1C rate for 1000 cycles with a capacity decay of 2.7 × 10<sup>−3</sup> mAh g<sup>−1</sup> per cycle.https://www.mdpi.com/2673-3293/2/1/9LiNiMnO<sub>4</sub>Ni-rich spinel structure5-volt cathodelithium-ion batteries |
| spellingShingle | Tianyi Li Kai Chang Ahmed M. Hashem Ashraf E. Abdel-Ghany Rasha S. El-Tawil Hua Wang Hazim El-Mounayri Andres Tovar Likun Zhu Christian M. Julien Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> Electrochem LiNiMnO<sub>4</sub> Ni-rich spinel structure 5-volt cathode lithium-ion batteries |
| title | Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> |
| title_full | Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> |
| title_fullStr | Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> |
| title_full_unstemmed | Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> |
| title_short | Structural and Electrochemical Properties of the High Ni Content Spinel LiNiMnO<sub>4</sub> |
| title_sort | structural and electrochemical properties of the high ni content spinel linimno sub 4 sub |
| topic | LiNiMnO<sub>4</sub> Ni-rich spinel structure 5-volt cathode lithium-ion batteries |
| url | https://www.mdpi.com/2673-3293/2/1/9 |
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