Y-doped P2-type Na0.67Ni0.33Mn0.67O2: A sodium-ion battery cathode with fast charging and enhanced cyclic performance
DC Field | Value | Language |
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dc.contributor.author | Kim, Sunwook | - |
dc.contributor.author | Min, Kyoungmin | - |
dc.contributor.author | Park, Kwangjin | - |
dc.date.accessioned | 2021-09-23T02:40:05Z | - |
dc.date.available | 2021-09-23T02:40:05Z | - |
dc.date.created | 2021-09-09 | - |
dc.date.issued | 2021-09-05 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41224 | - |
dc.description.abstract | P2-type Na0.67Ni0.33Mn0.67O2 has a high energy density and thus is considered a promising cathode material for sodium-ion batteries (SIBs). However, it has the critical disadvantage of rapid electrochemical performance reduction at high C rates. In this study, it was confirmed that Y doping enhanced the rate capability and cycle retention of the P2-type Na0.67Ni0.33Mn0.67O2 cathode material. Based on X-ray diffraction data and density functional theory calculation results, it was demonstrated that Y doping changed the c lattice. This is because of two reasons: the large ionic radius of the Y dopant and changes in the atomic charge due to Y doping. Na0.67Ni0.31Mn0.67Y0.02O2 has an expanded Na layer, which facilitates Na ion diffusion. As a result, the Y-doped material had a greater rate capability (63.4%, 2 C/0.05 C) than the pristine material (35.0%). The Y-doped material has a strong Y-O bond, forming a stable structure, and is surrounded by Y2O3, which acts as a protective layer. The expanded Na layer also causes the Na ion to be inserted not only on the surface, but also in the bulk. As a result, the Y-doped material had a higher capacity retention of 98.1% after 60 cycles than the pristine material (76.7%). (C) 2021 Elsevier B.V. All rights reserved. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.title | Y-doped P2-type Na0.67Ni0.33Mn0.67O2: A sodium-ion battery cathode with fast charging and enhanced cyclic performance | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jallcom.2021.160027 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.874 | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000653090100003 | - |
dc.identifier.scopusid | 2-s2.0-85105831352 | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 874 | - |
dc.contributor.affiliatedAuthor | Min, Kyoungmin | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordAuthor | Sodium-ion battery | - |
dc.subject.keywordAuthor | Cathode material | - |
dc.subject.keywordAuthor | Y doping | - |
dc.subject.keywordAuthor | Sodium nickel manganese oxide | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | SUBSTITUTION | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | IMPROVEMENT | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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