Nanostructured Ni‐Based Cathode Materials for Intermediate Temperature SOFC

$63.37 plus tax (Refund Policy)

Buy Article:


Ni substituted lanthanum strontium manganite, (La 0.8 Sr 0.2 ) 0.95 Mn 1-x Ni x O 3-d (x=0–0.5), was synthesized by ceramic route. X-ray diffraction revealed it to be a single phase up to 40 mole % Ni, but above x=0.4 two phases viz., La 2 NiO 4 and NiO start separating out. Even though it was prepared by ceramic route, the crystallite size was found to be ~20 nm. At 900°C, the rhombohedral phase of LSM could be retained only with very low Ni doping (x=0.1) and compositions between (La 0.8 Sr 0.2 ) 0.95 Mn 0.8 Ni 0.2 O 3-d (LSMNi 2 ) to (La 0.8 Sr 0.2 ) 0.95 Mn 0.6 Ni 0.4 O 3-d (LSMNi 4 ) were found to have orthorhombic symmetry. At 1400°C, all the compositions showed rhombohedral symmetry. The thermal expansion coefficients (a) in the temperature interval of 20–850°C of (La 0.8 Sr 0.2 ) 0.95 MnO 3-d , (La 0.8 Sr 0.2 ) 0.95 Mn 0.9 Ni 0.1 O 3-d and (La 0.8 Sr 0.2 ) 0.95 Mn 0.8 Ni 0.2 O 3-d were 10.08×10 -6 °C -1 , 11.82×10 -6 °C -1 and 13.59×10 -6 °C -1 , respectively. The thermal and chemical compatability of LSMNi 2 with ceria-based electrolytes, Ce 0.8 Gd 0.2 O 1.9 and Ce 0.8 Sm 0.2 O 1.9 was also studied using XRD and SEM technique.

Keywords: (La 0.8 Sr 0.2 ) 0.95 Mn 1‐x Ni x O 3‐; SOFC; X‐ray diffraction; compatibility; dilatometry

Document Type: Research Article


Affiliations: Applied Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India

Publication date: January 1, 2006

Related content

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect 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