DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jo, Changshin | ko |
dc.contributor.author | Kim, Youngsik | ko |
dc.contributor.author | Hwang, Jongkook | ko |
dc.contributor.author | Shim, Jongmin | ko |
dc.contributor.author | Chun, Jinyoung | ko |
dc.contributor.author | Lee, Jinwoo | ko |
dc.date.accessioned | 2018-08-20T08:23:49Z | - |
dc.date.available | 2018-08-20T08:23:49Z | - |
dc.date.created | 2018-08-08 | - |
dc.date.created | 2018-08-08 | - |
dc.date.issued | 2014-06 | - |
dc.identifier.citation | CHEMISTRY OF MATERIALS, v.26, no.11, pp.3508 - 3514 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | http://hdl.handle.net/10203/245056 | - |
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.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
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.identifier.wosid | 000337199400024 | - |
dc.identifier.scopusid | 2-s2.0-84902129810 | - |
dc.type.rims | ART | - |
dc.citation.volume | 26 | - |
dc.citation.issue | 11 | - |
dc.citation.beginningpage | 3508 | - |
dc.citation.endingpage | 3514 | - |
dc.citation.publicationname | CHEMISTRY OF MATERIALS | - |
dc.identifier.doi | 10.1021/cm501011d | - |
dc.contributor.localauthor | Lee, Jinwoo | - |
dc.contributor.nonIdAuthor | Jo, Changshin | - |
dc.contributor.nonIdAuthor | Kim, Youngsik | - |
dc.contributor.nonIdAuthor | Hwang, Jongkook | - |
dc.contributor.nonIdAuthor | Shim, Jongmin | - |
dc.contributor.nonIdAuthor | Chun, Jinyoung | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | RECHARGEABLE LITHIUM BATTERIES | - |
dc.subject.keywordPlus | ONE-POT SYNTHESIS | - |
dc.subject.keywordPlus | HIGH-RATE-PERFORMANCE | - |
dc.subject.keywordPlus | NEGATIVE-ELECTRODE | - |
dc.subject.keywordPlus | STORAGE CAPABILITY | - |
dc.subject.keywordPlus | DOPED LI4TI5O12 | - |
dc.subject.keywordPlus | UNIFORM PORES | - |
dc.subject.keywordPlus | TIO2 | - |
dc.subject.keywordPlus | ANATASE | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.