Structure of sputtered Co–Se thin films prepared for an application in catalysis

✍ Scribed by L. Zhu; D. Susac; A. Lam; M. Teo; P.C. Wong; D. Bizzotto; S.A. Campbell; R.R. Parsons; K.A.R. Mitchell

• Book ID: 104029727
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 419 KB
• Volume: 179
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2006.08.028

✦ Synopsis

Co-Se thin films prepared by magnetron sputtering have shown significant activity for the oxygen reduction reaction. One sample, after sectioning by ultramicrotomy, was studied by high-resolution scanning transmission electron microscopy (HRSTEM) and scanning Auger microscopy (SAM), and X-ray diffraction (XRD) was used for characterizing further samples. These thin films were shown to have Co-Se nanocrystals embedded into Se-rich matrices. The TEM and XRD results were consistent with the nanocrystallites being non-stoichiometric with structures related to those of monoclinic Co 1Àx Se (x ¼ 0.125-0.25).