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A Novel Molten Oxide Fuel Cell Concept
Author(s) -
Belousov V. V.,
Fedorov S. V.
Publication year - 2016
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201600031
Subject(s) - electrolyte , materials science , oxide , cathode , electrochemistry , anode , solid oxide fuel cell , grain boundary , ionic conductivity , chemical engineering , electrode , analytical chemistry (journal) , composite material , metallurgy , chemistry , microstructure , chromatography , engineering
We suggest a novel molten oxide fuel cell (MOFC) concept. The MOFC is based on the oxygen‐ion‐conducting solid/molten oxide electrolyte (so‐called liquid‐channel‐grain‐boundary‐structure, LGBS, material) consisting of TeO 2 solid grains and chemically compatible TeO 2 +Te 4 Bi 2 O 11 liquid electrolyte at the grain boundaries. The intergranular liquid channels provide the LGBS mechanical plasticity (ductility), which makes it easy to shape and alleviates problems due to thermal incompatibility with electrodes (CTE), and high ionic conductivity. The volume fraction of liquid varied from 0.15 to 0.17 at 600–640 °C. The cell performance has been examined by standard electrochemical methods. With air used as a cathode gas, the single cell showed the power 11.5 mW cm −2 at the current density 90 mA cm −2 , electrolyte thickness 2.5 mm, and temperature 640 °C.