2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 4: Recycling & Secondary Battery

Editors:Kongoli F
Publisher:Flogen Star OUTREACH
Publication Year:2014
Pages:498 pages
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Li1-xSn2+xPn2 (Pn = P, As): Novel Layered Li Compounds

    Kirill Kovnir1;
    Type of Paper: Invited
    Id Paper: 288
    Topic: 12


    The intensively growing Li-ion battery research area places high demands in the establishing of the long- and short-range structure of the electrodes after or during Li intercalation. The low crystallinity of the electrode materials and the weak scattering of the X-rays by Li atoms make these systems crystallographically challenging. To understand the processes occurring in tin pnictides electrodes, we have synthesized ternary Li-Sn-Pn (Pn = P, As) compounds. We hypothesize that the formation of Li1-xSn2+xPn2 is the first stage of Li intercalation into Sn4Pn3. To fully characterize the long-range and local structure, a combination of powder and single crystal X-ray diffraction, neutron and synchrotron X-ray PDF analysis, 7Li NMR and 119Sn Mossbauer spectroscopies, as well as high resolution TEM were applied. An observed local ordering of Sn and Li atoms was further probed by quantum-chemical calculations which indicate strong anisotropy of the properties of Li1-xSn2+xPn2. An investigation of the resistivity and thermal conductivity performed on the large single crystals confirmed anisotropic transport properties of Li1-xSn2+xPn2.

    Cite this article as:

    Kovnir K. Li1-xSn2+xPn2 (Pn = P, As): Novel Layered Li Compounds. In: Kongoli F, editors. Sustainable Industrial Processing Summit SIPS 2014 Volume 4: Recycling & Secondary Battery. Volume 4. Montreal(Canada): FLOGEN Star Outreach. 2014. p. 461-462.