Abstract:
In present study novel electrolyte materials for oxide, protonic and hybrid ions conductors
LN-Ca0.1Sm0.1Ce0.8O3–δ-Y2O3, LN-Ba0.1Sr0.1Ce0.8O3–δ-Y2O3, and LN-Ba0.1Sm0.1Ce0.8O3–δ-
Y2O3 were synthesized via cost effective co-precipitation technique. Effect of alkali
carbonates considered to diffuse the hydrogen ion and enhances the ionic conduction.
Electrochemical properties were investigated by fuel cell performance and DC 4-probe
method under air and hydrogen atmosphere. Experimentally structure, morphology and IR
behavior characterized by XRD, SEM and FTIR respectively. Average crystallite size was
calculated in the range of 27 to 98 nm by X-ray diffraction. Particle size was observed in
the range of 40 to 100nm. Maximum conductivity achieved 0.19 Scm-1 for
LN-Ba0.1Sm0.1Ce0.8O3–δ-Y2O3 that is greater than comparatively conventional electrolyte.
Maximum power density 752mWcm-2
with current density 2010 mAcm-2 at 1.06 V for
hybrid ion conductor taken into account by providing hydrogen fuel. Appearance of water
during fuel cell testing on both ends of cell (anode/cathode) verify that dual ion conducts
through this electrolyte material. Degradation and stability also found through durability.
