Electrochemical decomposition of Li4SiO4 and Li2TiO3 in solid-state thermal cells
Por:
Aceves J.M., West A.R.
Publicada:
1 ene 1982
Resumen:
Cells of the type Au|Li4SiO4|Au and Au|Li2TiO3|Au behave as secondary cells at high temperatures, ? 400°C. The cell reactants are created in situ by charging the cells in air at e.g. 1.5 V. Electrochemical decomposition of the solid electrolytes occurs giving, as solid products, Li2CO3 at the negative electrode and Li2SiO3 and TiO2, respectively, at the positive electrode. Under different charging conditions other products may be obtained with the Li2TiO3-containing cell. The products of charging form as a layer on the surfaces of the pellet and the gold electrodes appear to take no part in the reactions. The charged cells have open-circuit voltages in the range 0.4-0.5 V at ca. 500°C and give discharge currents of e.g. 10-100 ?A through a 104 ? load resistance for several days.
Filiaciones:
Aceves J.M.:
Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, United Kingdom
Instituto de Investigaciones Eléctricas, Cuernavaca, Morelos, Mexico
West A.R.:
Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, United Kingdom
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