Structure and performance of tin-cobalt-carbon alloys prepared by attriting, roller milling and sputtering

Download
  1. Get@NRC: Structure and performance of tin-cobalt-carbon alloys prepared by attriting, roller milling and sputtering (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1149/2.060403jes
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of the Electrochemical Society
ISSN0013-4651
Volume161
Issue3
PagesA342A347
AbstractSamples of (Sn5oCo5o)1-yC100y for 0 ≤ y ≤ 0.8 have been prepared in increments of y = 0.1 using a vertical-axis attritor and a horizontal roller mill. The effect of the carbon content on the structure and performance as a negative electrode material of the Sn-Co-C composites was examined by X-ray diffraction (XRD), small angle neutron scattering (SANS) and electrochemical methods. These results were compared to similar alloys prepared by magnetron sputtering. XRD experiments of all of the prepared samples show diffraction patterns characteristic of nanostructured materials except for the samples made without carbon which show broad Bragg peaks of Co3Sn2. The nanostructured samples were best described as Co-Sn grains surrounded by a carbon matrix. SANS results showed that samples prepared by roller milling and by attriting had Co-Sn grains of about 45 Å and 75 Å, respectively, while those prepared by sputtering were either amorphous or had Co-Sn grains of about 10 Å. Excellent charge-discharge capacity retention was observed for samples with y > 0.3. It is believed that this concentration marks the point at which the Co-Sn grains become isolated in the matrix of carbon.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Measurement Science and Standards
Peer reviewedYes
NPARC number21273051
Export citationExport as RIS
Report a correctionReport a correction
Record identifier2d462421-9286-4e54-8904-f684177131e8
Record created2014-12-10
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)