On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ

Details On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ

2011-11-24

arxiv.org/abs/1111.5762v1

Physics

Condensed Matter

Materials Science

4 pages

Scientific paper

Sodium cobaltate at high Na content is a promising thermoelectric material. It has been recently shown that oxygen vacancies can alter the material properties, reducing its figure of merit. However, experimental data about the oxygen stoichiometry are contradictory. We therefore studied the formation of oxygen vacancies in Na$_x$CoO$_2$ with first principles calculations, focusing on x=0.75. We show that a very low oxygen vacancy concentration is expected at the temperatures and partial pressures relevant for applications.

Affiliated with

Also associated with

No associations

Rating

On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Oxygen Non-Stoichiometry in Layered Sodium Cobaltate Na_xCoO_2-δ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-157296