Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Park, Jung Soo | - |
dc.contributor.author | Baek, Seong-Ho | - |
dc.contributor.author | Jeong, Yong-Il | - |
dc.contributor.author | Noh, Bum-Young | - |
dc.contributor.author | Kim, Jae Hyun | - |
dc.date.available | 2017-07-11T06:30:29Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2013-12-15 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/3166 | - |
dc.description.abstract | Li4Ti5O12 and Al3+ doped Li(4-x/3)AlxTi(5-2x/3)O12 (x = 0, 0.01, 0.05, 0.1, 0.15, 0.2) are synthesized at 750, 850, 950 °C via solid state reaction using TiO 2-rutile, Li2CO3 and Al2O 3 as precursors. The samples at 850, 950 °C have better phase purity than those at 750 °C. The preliminary chargeedischarge cycling test of undoped and Al3+ doped Li4Ti5O12 reveals that the electrochemical performance of the electrode prepared at 850 °C is better than that at 750, 950 °C. Therefore, the optimum calcination temperature is found to be 850 °C. Li(4-x/3)AlxTi(5-2x/3)O12 (x = 0.01, 0.05, 0.1), which is the low Al-doped sample, exhibits a higher discharge capacity and rate performance than the high Al-doped Li4Ti5O 12 (x = 0.15, 0.2) sample. The first discharge capacities at 0.2, 0.5, and 1 C are 174.4, 161.9, and 153.8 mAh g-1, respectively for Li (4-x/3)AlxTi(5-2x/3)O12 (x = 0.1). These values are similar to those of Li(4-x/3)AlxTi(5-2x/3)O 12 (x = 0.01, 0.05). The capacity retention ratio of Li (4-x/3)AlxTi(5-2x/3)O12 (x = 0.01, 0.05, 0.1) is over 99.3% after 30 cycles. The capacity increase and good rate performance in the optimum Al-doped Li4Ti5O12 are discussed in relation to the stability of the spinel structure and the resulting ease of lithium insertion. © 2013 Elsevier B.V. All rights reserved. | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Effects of a dopant on the electrochemical properties of Li4Ti5O12 as a lithium-ion battery anode material | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jpowsour.2013.02.048 | - |
dc.identifier.scopusid | 2-s2.0-84886098246 | - |
dc.identifier.bibliographicCitation | Journal of Power Sources, v.244, pp.527 - 531 | - |
dc.subject.keywordAuthor | Lithium-ion batteries | - |
dc.subject.keywordAuthor | Anode materials | - |
dc.subject.keywordAuthor | Lithium titanium oxide | - |
dc.subject.keywordAuthor | Aluminum doping | - |
dc.subject.keywordPlus | NANO-TUBES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | INSERTION | - |
dc.subject.keywordPlus | TITANATE | - |
dc.subject.keywordPlus | SPINELS | - |
dc.subject.keywordPlus | DOPED LI4TI5O12 | - |
dc.subject.keywordPlus | COMPOSITE ANODE | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.citation.endPage | 531 | - |
dc.citation.startPage | 527 | - |
dc.citation.title | Journal of Power Sources | - |
dc.citation.volume | 244 | - |
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