DC Field | Value | Language |
---|---|---|
dc.contributor.author | j.-y. go | ko |
dc.contributor.author | Pyun, Su Il | ko |
dc.date.accessioned | 2013-03-03T17:28:43Z | - |
dc.date.available | 2013-03-03T17:28:43Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2003-08 | - |
dc.identifier.citation | JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.150, no.8, pp.A1037 - A1043 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.uri | http://hdl.handle.net/10203/79686 | - |
dc.description.abstract | In this work, stresses generated during lithium transport through radio-frequency (rf) sputter-deposited Li1-deltaCoO2 films with different thicknesses were investigated by a double quartz crystal resonator (DQCR) technique. For this purpose, in situ resonant frequency changes of the Li1-deltaCoO2-coated AT- and BT-cut quartz crystals were first recorded along with the galvanostatic charge (lithium deintercalation) and discharge (lithium intercalation) curves obtained in a 1 M LiClO4-propylene carbonate solution. From the measured resonant frequency changes, the lateral stresses of the Li1-deltaCoO2 films were then estimated as a function of lithium stoichiometry, (1-delta). Compressive and tensile stresses were developed in the Li1-deltaCoO2 films during the lithium deintercalation and intercalation, respectively. The remarkable variation of compressive and tensile stresses with lithium stoichiometry appeared in a two-phase (a Li-poor alpha-phase and a Li-rich beta-phase) region. Compressive and tensile stresses decreased in absolute magnitude with increasing film thickness. The contribution of the electrostrictive stress to the total stress was theoretically calculated to be about 2.2 x 10(-3)%. From the extremely small contribution of the electrostrictive stress, it is strongly suggested that the stresses result mainly from the volume contraction and expansion of the Li1-deltaCoO2 films due to the lithium intercalation and deintercalation, respectively. Furthermore, the relaxation of the compressive stress was developed during the lithium deintercalation in a single alpha-phase region, causing the cracking of the Li1-deltaCoO2 films. (C) 2003 The Electrochemical Society. | - |
dc.language | English | - |
dc.publisher | Electrochemical Soc Inc | - |
dc.subject | QUARTZ-CRYSTAL MICROBALANCE | - |
dc.subject | ELECTROCHEMICAL INTERCALATION | - |
dc.subject | THIN-FILMS | - |
dc.subject | ELECTRODES | - |
dc.subject | RESONATORS | - |
dc.subject | LICOO2 | - |
dc.subject | EXTRACTION | - |
dc.subject | BATTERIES | - |
dc.subject | INJECTION | - |
dc.subject | ALUMINUM | - |
dc.title | Investigation of Stresses Generated during Lithium Transport through the RF Sputter-Deposited Li1- CoO2 Film by a DQCR Technique | - |
dc.type | Article | - |
dc.identifier.wosid | 000184205300004 | - |
dc.identifier.scopusid | 2-s2.0-0043202824 | - |
dc.type.rims | ART | - |
dc.citation.volume | 150 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | A1037 | - |
dc.citation.endingpage | A1043 | - |
dc.citation.publicationname | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.contributor.nonIdAuthor | j.-y. go | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | QUARTZ-CRYSTAL MICROBALANCE | - |
dc.subject.keywordPlus | ELECTROCHEMICAL INTERCALATION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | RESONATORS | - |
dc.subject.keywordPlus | LICOO2 | - |
dc.subject.keywordPlus | EXTRACTION | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | INJECTION | - |
dc.subject.keywordPlus | ALUMINUM | - |
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