Crystallite size dependence of lithium intercalation in nanocrystalline rutile

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dc.contributor.authorMilne, NAen_AU
dc.contributor.authorSkyllas-Kazacos, Men_AU
dc.contributor.authorLuca, Ven_AU
dc.date.accessioned2010-04-07T05:52:46Zen_AU
dc.date.accessioned2010-04-30T05:09:20Zen_AU
dc.date.available2010-04-07T05:52:46Zen_AU
dc.date.available2010-04-30T05:09:20Zen_AU
dc.date.issued2009-07-30en_AU
dc.date.statistics2009-07-30en_AU
dc.description.abstractAn electrochemical investigation has been undertaken into the dependence of particle size on the mechanism of lithium intercalation in rutile. A thoroughly characterized suite of rutile nanoparticles with diameters in the broad size range 4−50 nm was used in the study. Variation in the cyclic voltammetry of rutile over cycling is presented for the first time and numerous new electrode reactions identified. While a crystallite size effect was witnessed during fast voltammetry experiments, this effect disappeared as the rate was reduced and no variation in capacity was witnessed in galvanostatic cycling experiments. The intercalation potential was seen to increase with decreasing crystallite size, the opposite of what was predicted from quantum confinement. Enhanced lithium intercalation into the smaller nanoparticles has been ascribed to the slightly expanded structure of smaller nanocrystals relative to larger ones taking the dimensions of the tunnels into which Li inserts beyond a threshold value. This lattice expansion or volume dilation with decreasing crystallite size is due to the expected increase in surface tension with decreasing crystallite size. This would correspondingly increase the intercalation potential as the crystallite size decreased. © 2009, American Chemical Societyen_AU
dc.identifier.citationMilne, N. A., Skyllas-Kazacos, M., & Luca, V. (2009). Crystallite size dependence of lithium intercalation in nanocrystalline rutile. Journal of Physical Chemistry C, 113(30), 12983-12995. doi:10.1021/jp8087995en_AU
dc.identifier.govdoc1602en_AU
dc.identifier.issn1932-7447en_AU
dc.identifier.issue30en_AU
dc.identifier.journaltitleJournal of Physical Chemistry Cen_AU
dc.identifier.pagination12983-12995en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/jp8087995en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3085en_AU
dc.identifier.volume113en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectLithiumen_AU
dc.subjectRutileen_AU
dc.subjectVoltametryen_AU
dc.subjectParticle sizeen_AU
dc.subjectCrystalsen_AU
dc.subjectSurface tensionen_AU
dc.titleCrystallite size dependence of lithium intercalation in nanocrystalline rutileen_AU
dc.typeJournal Articleen_AU
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