Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material
This article studies the doping of Li-rich cathode materials. Aluminum and iron were chosen as dopants. Li-rich cathode materials for lithium-ion batteries, which were composed of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O&...
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| author | Anna Medvedeva Elena Makhonina Lidia Pechen Yury Politov Aleksander Rumyantsev Yury Koshtyal Alexander Goloveshkin Konstantin Maslakov Igor Eremenko |
| author_facet | Anna Medvedeva Elena Makhonina Lidia Pechen Yury Politov Aleksander Rumyantsev Yury Koshtyal Alexander Goloveshkin Konstantin Maslakov Igor Eremenko |
| author_sort | Anna Medvedeva |
| collection | DOAJ |
| description | This article studies the doping of Li-rich cathode materials. Aluminum and iron were chosen as dopants. Li-rich cathode materials for lithium-ion batteries, which were composed of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> with a partial replacement of cobalt (2 at %) by iron and aluminum, were synthesized. The dopants were introduced at the precursor synthesis stage by co-precipitation. The presence of Fe and Al in the composition of the synthesized samples was proved by inductively coupled plasma mass spectrometry, X-ray diffraction analysis and X-ray microanalysis. The cathode materials were tested electrochemically. The incorporation of Al and Fe into the structure of lithium-enriched materials improved the cyclability and reduced the voltage fade of the cathodes. An analysis of the electrochemical data showed that the structural changes that occur in the initial cycles are different for the doped and starting materials and affect their cycling stability. The partial cation substitution suppressed the unfavorable phase transition to lower-voltage structures and improved the electrochemical performance of the materials under study. |
| first_indexed | 2024-03-09T18:11:34Z |
| format | Article |
| id | doaj.art-316a9d34ed034184a1488e35b325d379 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:11:34Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-316a9d34ed034184a1488e35b325d3792023-11-24T09:06:14ZengMDPI AGMaterials1996-19442022-11-011522822510.3390/ma15228225Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode MaterialAnna Medvedeva0Elena Makhonina1Lidia Pechen2Yury Politov3Aleksander Rumyantsev4Yury Koshtyal5Alexander Goloveshkin6Konstantin Maslakov7Igor Eremenko8Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, RussiaIoffe Institute of the Russian Academy of Sciences, 26 Politekhnicheskaya ul., 194021 St. Petersburg, RussiaIoffe Institute of the Russian Academy of Sciences, 26 Politekhnicheskaya ul., 194021 St. Petersburg, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova ul., 119334 Moscow, RussiaDepartment of Chemistry, Lomonosov Moscow State University, Leninskiye Gory, 1/3, 119991 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, RussiaThis article studies the doping of Li-rich cathode materials. Aluminum and iron were chosen as dopants. Li-rich cathode materials for lithium-ion batteries, which were composed of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> with a partial replacement of cobalt (2 at %) by iron and aluminum, were synthesized. The dopants were introduced at the precursor synthesis stage by co-precipitation. The presence of Fe and Al in the composition of the synthesized samples was proved by inductively coupled plasma mass spectrometry, X-ray diffraction analysis and X-ray microanalysis. The cathode materials were tested electrochemically. The incorporation of Al and Fe into the structure of lithium-enriched materials improved the cyclability and reduced the voltage fade of the cathodes. An analysis of the electrochemical data showed that the structural changes that occur in the initial cycles are different for the doped and starting materials and affect their cycling stability. The partial cation substitution suppressed the unfavorable phase transition to lower-voltage structures and improved the electrochemical performance of the materials under study.https://www.mdpi.com/1996-1944/15/22/8225Li-ion batterycathode materialLi-rich oxideAl dopingFe doping |
| spellingShingle | Anna Medvedeva Elena Makhonina Lidia Pechen Yury Politov Aleksander Rumyantsev Yury Koshtyal Alexander Goloveshkin Konstantin Maslakov Igor Eremenko Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material Materials Li-ion battery cathode material Li-rich oxide Al doping Fe doping |
| title | Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material |
| title_full | Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material |
| title_fullStr | Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material |
| title_full_unstemmed | Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material |
| title_short | Effect of Al and Fe Doping on the Electrochemical Behavior of Li<sub>1.2</sub>Ni<sub>0.133</sub>Mn<sub>0.534</sub>Co<sub>0.133</sub>O<sub>2</sub> Li-Rich Cathode Material |
| title_sort | effect of al and fe doping on the electrochemical behavior of li sub 1 2 sub ni sub 0 133 sub mn sub 0 534 sub co sub 0 133 sub o sub 2 sub li rich cathode material |
| topic | Li-ion battery cathode material Li-rich oxide Al doping Fe doping |
| url | https://www.mdpi.com/1996-1944/15/22/8225 |
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