English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Magnéli phases Ti4O7 and Ti8O15 and their carbon nanocomposites via the thermal decomposition-precursor route

MPS-Authors
/persons/resource/persons126891

Veremchuk,  I.
Igor Veremchuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin,  Yu.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Conze, S., Veremchuk, I., Reibold, M., Matthey, B., Michaelis, A., Grin, Y., et al. (2015). Magnéli phases Ti4O7 and Ti8O15 and their carbon nanocomposites via the thermal decomposition-precursor route. Journal of Solid State Chemistry, 229, 235-242. doi:10.1016/j.jssc.2015.04.037.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-52A8-7
Abstract
A new synthetic approach for producing nano-powders of the Magneli phases Ti4O7, Ti8O15 and their carbon nanocomposites by thermal decomposition-precursor route is proposed. The formation mechanism of the single-phase carbon nanocomposites (Ti4O7/C and Ti8O15/C) from metal-organic precursors is studied using FT-IR, elemental analysis, TG, STA-MS and others. The synthesis parameters and conditions were optimized to prepare the target oxides with the desired microstructure and physical properties. The electrical and transport properties of Ti4O7/C and Ti8O15/C are investigated. These nano-materials are n-type semiconductors with relatively low thermal conductivity in contrast to the bulk species. The nanostructured carbon nanocomposites of Magneli phases achieve a low thermal conductivity close to 1 W/m K at RT. The maximum ZT(570) (degrees C) values are 0.04 for Ti4O7/C powder nanocomposite and 0.01 for Ti8O15/C bulk nanocomposite. (C) 2015 Elsevier Inc. All rights reserved.