Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries
Abstract The Li- and Mn-rich layered oxide cathode material class is a promising cathode material type for high energy density lithium-ion batteries. However, this cathode material type suffers from layer to spinel structural transition during electrochemical cycling, resulting in energy density los...
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| Format: | Article |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-31492-0 |
| _version_ | 1797864844667387904 |
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| author | Songyoot Kaewmala Natthapong Kamma Sunisa Buakeaw Wanwisa Limphirat Jeffrey Nash Sutham Srilomsak Pimpa Limthongkul Nonglak Meethong |
| author_facet | Songyoot Kaewmala Natthapong Kamma Sunisa Buakeaw Wanwisa Limphirat Jeffrey Nash Sutham Srilomsak Pimpa Limthongkul Nonglak Meethong |
| author_sort | Songyoot Kaewmala |
| collection | DOAJ |
| description | Abstract The Li- and Mn-rich layered oxide cathode material class is a promising cathode material type for high energy density lithium-ion batteries. However, this cathode material type suffers from layer to spinel structural transition during electrochemical cycling, resulting in energy density losses during repeated cycling. Thus, improving structural stability is an essential key for developing this cathode material family. Elemental doping is a useful strategy to improve the structural properties of cathode materials. This work examines the influences of Mg doping on the structural characteristics and degradation mechanisms of a Li1.2Mn0.4Co0.4O2 cathode material. The results reveal that the prepared cathode materials are a composite, exhibiting phase separation of the Li2MnO3 and LiCoO2 components. Li2MnO3 and LiCoO2 domain sizes decreased as Mg content increased, altering the electrochemical mechanisms of the cathode materials. Moreover, Mg doping can retard phase transition, resulting in reduced structural degradation. Li1.2Mn0.36Mg0.04Co0.4O2 with optimal Mg doping demonstrated improved electrochemical performance. The current work provides deeper understanding about the roles of Mg doping on the structural characteristics and degradation mechanisms of Li-and Mn-rich layered oxide cathode materials, which is an insightful guideline for the future development of high energy density cathode materials for lithium-ion batteries. |
| first_indexed | 2024-04-09T22:58:33Z |
| format | Article |
| id | doaj.art-8ab3eee93b93442bba3ea833e233ddb7 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T22:58:33Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8ab3eee93b93442bba3ea833e233ddb72023-03-22T11:06:52ZengNature PortfolioScientific Reports2045-23222023-03-0113111310.1038/s41598-023-31492-0Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteriesSongyoot Kaewmala0Natthapong Kamma1Sunisa Buakeaw2Wanwisa Limphirat3Jeffrey Nash4Sutham Srilomsak5Pimpa Limthongkul6Nonglak Meethong7Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen UniversityMaterials Science and Nanotechnology Program, Department of Physics, Faculty of Science, Khon Kaen UniversityNational Energy Technology Center, National Science and Technology Development AgencySynchrotron Light Research InstituteInstitute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen UniversityInstitute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen UniversityNational Energy Technology Center, National Science and Technology Development AgencyInstitute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen UniversityAbstract The Li- and Mn-rich layered oxide cathode material class is a promising cathode material type for high energy density lithium-ion batteries. However, this cathode material type suffers from layer to spinel structural transition during electrochemical cycling, resulting in energy density losses during repeated cycling. Thus, improving structural stability is an essential key for developing this cathode material family. Elemental doping is a useful strategy to improve the structural properties of cathode materials. This work examines the influences of Mg doping on the structural characteristics and degradation mechanisms of a Li1.2Mn0.4Co0.4O2 cathode material. The results reveal that the prepared cathode materials are a composite, exhibiting phase separation of the Li2MnO3 and LiCoO2 components. Li2MnO3 and LiCoO2 domain sizes decreased as Mg content increased, altering the electrochemical mechanisms of the cathode materials. Moreover, Mg doping can retard phase transition, resulting in reduced structural degradation. Li1.2Mn0.36Mg0.04Co0.4O2 with optimal Mg doping demonstrated improved electrochemical performance. The current work provides deeper understanding about the roles of Mg doping on the structural characteristics and degradation mechanisms of Li-and Mn-rich layered oxide cathode materials, which is an insightful guideline for the future development of high energy density cathode materials for lithium-ion batteries.https://doi.org/10.1038/s41598-023-31492-0 |
| spellingShingle | Songyoot Kaewmala Natthapong Kamma Sunisa Buakeaw Wanwisa Limphirat Jeffrey Nash Sutham Srilomsak Pimpa Limthongkul Nonglak Meethong Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries Scientific Reports |
| title | Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries |
| title_full | Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries |
| title_fullStr | Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries |
| title_full_unstemmed | Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries |
| title_short | Impacts of Mg doping on the structural properties and degradation mechanisms of a Li and Mn rich layered oxide cathode for lithium-ion batteries |
| title_sort | impacts of mg doping on the structural properties and degradation mechanisms of a li and mn rich layered oxide cathode for lithium ion batteries |
| url | https://doi.org/10.1038/s41598-023-31492-0 |
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