A comparative study of aqueous tape and pellet of (La0.89Ba0.01) Sr0.1Al0.9Mg0.1O3-delta electrolyte material

作者：Verma Onkar Nath; Jha Priyanka A; Melkeri Anand; Singh Prabhakar^*

来源：Physica B: Condensed Matter , 2017, 521: 230-238.

DOI：10.1016/j.physb.2017.06.081

• Electrolyte material for SOFCs and ionic conductivity

Lanthanum aluminate (LaAlO3) is one of the promising materials as an electrolyte for SOFCs, which works close to 700 degrees C. We investigated on Ba doped Lanthanum Strontium Magnesium Aluminate i.e., (La-0.89 Ba-0.01) Sr0.1Al0.9Mg0.1O3-delta (LSBAM01) tape which was obtained by tape casting technique and reaction sintering. In order to determine the conductivity, thickness of the tape was maintained in the range of 100-300 mu m using aqueous solution method. The thickness of the tape was set up for similar to 100 mu m. In order to compare the electrical conductivity of tape with the pellet, LSBAM01 powder was prepared by auto-combustion technique. A comparative study of the tape casted specimen and pellet was done in order to find out the effect on green as well as sintered densities of tape and pellet and their corresponding conductivities. The impedance plots showed that the tape was more resistive in comparison to pellet. The conductivity of the tape was found to be reduced in comparison to pellet having the low activation energy than that of tape sample.

• 出版日期2017-9