DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jo, C | - |
dc.contributor.author | Kim, Y | - |
dc.contributor.author | Hwang, J | - |
dc.contributor.author | Shim, J | - |
dc.contributor.author | Chun, J | - |
dc.contributor.author | Lee, J | - |
dc.date.accessioned | 2016-03-31T07:26:37Z | - |
dc.date.available | 2016-03-31T07:26:37Z | - |
dc.date.created | 2015-02-24 | - |
dc.date.issued | 2014-06-10 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.other | 2014-OAK-0000032180 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/13637 | - |
dc.description.abstract | In order to achieve high-power and -energy anodes operating above 1.0 V (vs Li/Li+), titanium-based materials have been investigated for a long time. However, theoretically low lithium charge capacities of titanium-anodes have required new types of high-capacity anode materials. As a candidate, TiNb2O7 has attracted much attention due to the high theoretical capacity of 387.6 mA h g(-1). However, the high formation temperature of the TiNb2O7 phase resulted in large-sized TiNb2O7 crystals, thus resulting in poor rate capability. Herein, ordered mesoporous TiNb2O7 (denoted as m-TNO) was synthesized by block copolymer assisted self-assembly, and the resulting binary metal oxide was applied as an anode in a lithium ion battery. The nanocrystals (similar to 15 nm) developed inside the confined pore walls and large pores (similar to 40 nm) of m-TNO resulted in a short diffusion length for lithium ions/electrons and fast penetration of electrolyte. As a stable anode, the m-TNO electrode exhibited a high capacity of 289 mA h g(-1) (at 0.1 C) and an excellent rate performance of 162 mA h g(-1) at 20 C and 116 mA h g(-1) at 50 C (= 19.35 A g(-1)) within a potential range of 1.0-3.0 V (vs Li/Li+), which clearly surpasses other Ti-and Nb-based anode materials (TiO2, Li4Ti5O12, Nb2O5, etc.) and previously reported TiNb2O7 materials. The m-TNO and carbon coated m-TNO electrodes also demonstrated stable cycle performances of 48 and 81% retention during 2,000 cycles at 10 C rate, respectively. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | CHEMISTRY OF MATERIALS | - |
dc.subject | RECHARGEABLE LITHIUM BATTERIES | - |
dc.subject | ONE-POT SYNTHESIS | - |
dc.subject | HIGH-RATE-PERFORMANCE | - |
dc.subject | NEGATIVE-ELECTRODE | - |
dc.subject | STORAGE CAPABILITY | - |
dc.subject | DOPED LI4TI5O12 | - |
dc.subject | UNIFORM PORES | - |
dc.subject | TIO2 | - |
dc.subject | ANATASE | - |
dc.subject | NANOSTRUCTURES | - |
dc.title | Block Copolymer Directed Ordered Mesostructured TiNb2O7 Multimetallic Oxide Constructed of Nanocrystals as High Power Li-Ion Battery Anodes | - |
dc.type | Article | - |
dc.contributor.college | 화학공학과 | - |
dc.identifier.doi | 10.1021/CM501011D | - |
dc.author.google | Jo, C | - |
dc.author.google | Kim, Y | - |
dc.author.google | Hwang, J | - |
dc.author.google | Shim, J | - |
dc.author.google | Chun, J | - |
dc.author.google | Lee, J | - |
dc.relation.volume | 26 | - |
dc.relation.issue | 11 | - |
dc.relation.startpage | 3508 | - |
dc.relation.lastpage | 3514 | - |
dc.contributor.id | 10138815 | - |
dc.relation.journal | CHEMISTRY OF MATERIALS | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.26, no.11, pp.3508 - 3514 | - |
dc.identifier.wosid | 000337199400024 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 3514 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 3508 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 26 | - |
dc.contributor.affiliatedAuthor | Lee, J | - |
dc.identifier.scopusid | 2-s2.0-84902129810 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 76 | - |
dc.description.scptc | 68 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ONE-POT SYNTHESIS | - |
dc.subject.keywordPlus | LITHIUM STORAGE CAPABILITY | - |
dc.subject.keywordPlus | HIGH-RATE-PERFORMANCE | - |
dc.subject.keywordPlus | NEGATIVE-ELECTRODE | - |
dc.subject.keywordPlus | ANATASE | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | FRAMEWORK | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | CARBON/SILICA | - |
dc.subject.keywordPlus | REACTIVITY | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
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