DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이상동 | ko |
dc.contributor.author | 엄지용 | ko |
dc.contributor.author | 권혁상 | ko |
dc.date.accessioned | 2013-03-06T04:49:19Z | - |
dc.date.available | 2013-03-06T04:49:19Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2001-06 | - |
dc.identifier.citation | 대한금속·재료학회지, v.39, no.6, pp.700 - 706 | - |
dc.identifier.issn | 1738-8228 | - |
dc.identifier.uri | http://hdl.handle.net/10203/85847 | - |
dc.description.abstract | The electrochemical properties of amorphous vanadium pentoxide films fabricated by reactive r.f.-sputtering have been investigated by galvanostatic charge/discharge cycling experiment, AC impedance spectroscopy, and galvanostatic intermittent titration technique (GITT). As x in Li_xV₂O_(5-y) increased (x=0∼2.0), the electromotive force of Li|1 M LiClO₄-propylene carbonate|V₂O_(5-y) cells decreased gradually without potential plateau or potential step, demonstrating that an abrupt structural change did not occur in the whole lithium content. Impedance spectra of the cells consisted of a high frequency arc, a low frequency straight line, and a middle frequency Warburg impedance line. Equivalent circuit deduced from Nyquist plot suggests that lithium intercalation reaction consists of three consecutive steps of charge transfer at the electrolyte/cathode interface, diffusion into the film and charge saturation. Chemical diffusivity of Li^+ in Li_xV₂O_(5-y) film, measured using GITT was determined to be 4×10^(-13) to 7×10^(-14)㎠/sec in the lithium content range investigated. The component diffusivity of lithium decreased linearly with lithium content from 9×10^(-14) to 5×10^(-15) ㎠/sec, owing to the decrease in the number of vacant sites available for jumping of lithium atom. | - |
dc.language | Korean | - |
dc.publisher | 대한금속·재료학회 | - |
dc.title | R. F. 스퍼터링으로 제조한 비정질 LixV2O5-y 양극 박막의 충방전 특성 및 GITT 법을 이용하여 측정한 리륨 이온 확산 계수 | - |
dc.title.alternative | The Charge/Discharge Characteristics of Amorphous LixV2O5-y Thin Film Cathodes Deposited by RF Sputtering and Lithium Ion Diffusivity Determined by GITT method | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 39 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 700 | - |
dc.citation.endingpage | 706 | - |
dc.citation.publicationname | 대한금속·재료학회지 | - |
dc.contributor.localauthor | 권혁상 | - |
dc.contributor.nonIdAuthor | 이상동 | - |
dc.contributor.nonIdAuthor | 엄지용 | - |
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