| dc.contributor.author | Beaulieu, Luc Yvon. | en_US |
| dc.date.accessioned | 2014-10-21T12:38:21Z | |
| dc.date.available | 2002 | |
| dc.date.issued | 2002 | en_US |
| dc.identifier.other | AAINQ83574 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10222/55919 | |
| dc.description | The electrochemical and mechanical properties of an amorphous Si 0.66Sn0.34 compound are studied as it reacts with Li. This material is shown by in situ x-ray diffraction to remain amorphous during the reaction with Li. This unusual structural behavior is believed to account for the excellent capacity retention displayed by Li/Si 0.66Sn0.34 cells. To study the changes in the morphology of Si0.66Sn0.34 as it reacts with Li in situ , a commercial atomic force microscope (AFM) has been placed inside an argon-filed glovebox. To increase the sensitivity, the AFM has been placed on a vibration damping system and surrounded by a draft shield. A heating element placed inside the draft shield is used to maintain the entire microscope and sample at a constant temperature. Using this AFM workstation, we show how Si0.66Sn0.34 can reversibly react with Li to undergo volume changes on the order of 250%. | en_US |
| dc.description | The AFM workstation has also been used to study a-Si, Sn, Al, and Mo0.65Sn0.35 as they react with Li. In situ atomic force microscopy has been used to observe an anomalous catalytic reaction occurring at the surface of Sn. In situ atomic force microscopy has also been used to help identify a BCC Mo 0.65Sn0.35 phase as an intermetallic insertion material for Li. This unique reaction has never been reported for any intermetallic system.* | en_US |
| dc.description | *This dissertation is compound (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Adobe Acrobat; Windows MediaPlayer or RealPlayer. | en_US |
| dc.description | Thesis (Ph.D.)--Dalhousie University (Canada), 2002. | en_US |
| dc.language | eng | en_US |
| dc.publisher | Dalhousie University | en_US |
| dc.publisher | | en_US |
| dc.subject | Physics, Condensed Matter. | en_US |
| dc.title | Atomic force microscopy studies of the reaction of lithium with amorphoous silicon-tin alloys. | en_US |
| dc.type | text | en_US |
| dc.contributor.degree | Ph.D. | en_US |
