Characterization and electrochemical performance of (Ba0.6Sr0.4)1−xLaxCo0.85Ti0.15O3 as cathode materials for intermediate temperature solid oxide fuel cell
Source abstract
Abstract
Cubic perovskite-type (Ba0.6Sr0.4)1−xLaxCo0.85Ti0.15O3−δ (BSLCT, 0<x<0.2) materials were synthesized and evaluated as cathode for intermediate temperature solid oxide fuel cell (IT-SOFC) based on Ce0.9Gd0.1O2−δ (GDC). The influence of La-doping on the lattice structure, electrical conductivity, chemical compatibility with electrolyte GDC, and cathode performance of BSLCTs were studied. The solid solution limit of La in BSLCT was ca. x=0.15. These materials displayed small polaron hopping conduction behavior. With increasing La content, the electrical conductivity increased, mainly due to the decreased activation energy for hopping conduction. BSLCT had a good compatibility with GDC at temperatures below 900 °C, above which, a slight diffusion was observed. La doping had a positive effect on the cathode performance of BSLCT. A maximum power density of 255 mW cm−2 was obtained when La content was x=0.15 for BSLCT/GDC (300 μm)/Ni–GDC cell.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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