Skip to main content
padlock icon - secure page this page is secure

Preparation, Electrical Conductivity, and Thermal Expansion Behavior of Dense Nd1−xCaxCrO3 Solid Solutions

Buy Article:

$52.00 + tax (Refund Policy)

Nd1−xCaxCrO3 (0≤x≤0.25) solid solutions are synthesized using a two-step calcination solid-state reaction method and can potentially be used as interconnect applications in solid oxide fuel cells (SOFCs). The lattice parameters and unit cell volume decrease with an increase of the Ca2+ dopant concentration at the A-site. On the other hand, the relative density, electrical conductivity, and thermal expansion coefficient (TEC) increase with an increase of Ca2+ contents. Calcium doping significantly depresses the chromium vaporization of NdCrO3, thus accelerating the sintering and densification of the oxides. Nd1−xCaxCrO3 with x=0.25 shows the best electrical conductivity of 28.8 and 1.1 S/cm at 850°C in air and hydrogen, respectively, with a high relative density of 98.0% and a good TEC of 9.19 × 10−6 K−1 in the temperature range from 30° to 1000°C in air. This indicates that Nd0.75Ca0.25CrO3 is a promising candidate as an interconnect material for application in SOFCs.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: National Key Laboratory of Superhard Materials, and College of Physics, Jilin University, Changchun 130012, China 2: School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore

Publication date: October 1, 2009

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more