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Nanoscale Zirconium-Abundant Surface Layers on Lithium- and Manganese-Rich Layered Oxides for High-Rate Lithium-Ion Batteries
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ahn, Juhyeon | - |
dc.contributor.author | Kim, Jong Hak | - |
dc.contributor.author | Cho, Byung Won | - |
dc.contributor.author | Chung, Kyung Yoon | - |
dc.contributor.author | Kim, Sangryun | - |
dc.contributor.author | Choi, Jang Wook | - |
dc.contributor.author | Oh, Si Hyoung | - |
dc.date.accessioned | 2020-03-16T11:09:15Z | - |
dc.date.available | 2020-03-16T11:09:15Z | - |
dc.date.created | 2018-06-29 | - |
dc.date.issued | 2017-12 | - |
dc.identifier.citation | Nano Letters, Vol.17 No.12, pp.7869-7877 | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.other | 38419 | - |
dc.identifier.uri | https://hdl.handle.net/10371/164666 | - |
dc.description.abstract | Battery performance, such as the rate capability and cycle stability Of lithium transition metal oxides, is strongly correlated with the surface properties of active particles. For lithium-rich layered oxides, transition metal segregation in the initial state and migration upon cycling leads to a significant structural rearrangement, which eventually degrades the electrode performance. Here, we show that a fine-tuning of surface chemistry on the particular crystal facet can facilitate ionic diffusion and thus improve the rate capability dramatically, delivering a specific capacity of similar to 110 mAh g(-1) at 30C. This high rate performance is realized by creating a nanoscale zirconium-abundant rock-salt-like surface phase epitaxially grown on the layered bulk. This surface layer is spontaneously formed on the Li+ diffusive crystallographic facets during the synthesis and is also durable upon electrochemical cycling. As a result, Li-ions can move rapidly through this nanoscale surface layer over hundreds of cycles. This study provides a promising new strategy for designing and preparing a high-performance lithium-rich layered oxide cathode material. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | Nanoscale Zirconium-Abundant Surface Layers on Lithium- and Manganese-Rich Layered Oxides for High-Rate Lithium-Ion Batteries | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 최장욱 | - |
dc.identifier.doi | 10.1021/acs.nanolett.7b04158 | - |
dc.citation.journaltitle | Nano Letters | - |
dc.identifier.wosid | 000418393300097 | - |
dc.identifier.scopusid | 2-s2.0-85038209816 | - |
dc.citation.endpage | 7877 | - |
dc.citation.number | 12 | - |
dc.citation.startpage | 7869 | - |
dc.citation.volume | 17 | - |
dc.identifier.sci | 000418393300097 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Choi, Jang Wook | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | TRANSITION-METAL OXIDE | - |
dc.subject.keywordPlus | ENHANCED ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | CATHODE MATERIALS | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | LI1.2NI0.2MN0.6O2 CATHODE | - |
dc.subject.keywordPlus | COMPOSITE CATHODE | - |
dc.subject.keywordPlus | OXYGEN VACANCIES | - |
dc.subject.keywordPlus | COATING LAYER | - |
dc.subject.keywordPlus | LICOO2 FILMS | - |
dc.subject.keywordPlus | VOLTAGE-FADE | - |
dc.subject.keywordAuthor | Li- and Mn-rich layered oxides | - |
dc.subject.keywordAuthor | transition metal segregations | - |
dc.subject.keywordAuthor | Zr-abundant surface layers | - |
dc.subject.keywordAuthor | rate capabilities | - |
dc.subject.keywordAuthor | nanoscale | - |
dc.subject.keywordAuthor | crystallographic facets | - |
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