Method for preparing apatite type oxide electrolyte powder
An electrolyte and apatite technology, applied in the direction of phosphorus compounds, chemical instruments and methods, solid electrolyte fuel cells, etc., can solve the problems of difficult control of the speed and degree of hydrolysis reaction
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Embodiment 1
[0015] Preparation of apatite-type oxide La 9.33 Ge 6 o 26 Electrolyte powder: put 0.00933mol of lanthanum nitrate and 0.006mol of germanium chloride into a 50ml beaker containing 20ml of ethanol, stir and dissolve completely, add 0.016mol of citric acid, stir and dissolve to form a sol; Heat and stir to evaporate the solvent to form a gel; put the gel in an oven and dry at 80°C to form a raw powder; put the raw powder into a crucible and place it in a heating furnace for calcination at 700°C for 15 hours. Obtain apatite-type oxide La with a particle size of about 50nm 9.33 Ge 6 o 26 .
Embodiment 2
[0017] Preparation of apatite-type oxide La 9.33 Si 6 o 26 Electrolyte powder: put 0.00933mol of lanthanum nitrate and 0.006mol of ethyl silicate into a 50ml beaker containing 30ml of methanol, stir and dissolve completely, add 0.03mol of citric acid, stir and dissolve to form a sol; Heat and stir at ℃ to evaporate the solvent to form a gel; put the gel in an oven and dry at 90°C to form a raw powder; put the raw powder into a crucible and place it in a heating furnace for calcination at 1200°C for 1 hour , to obtain apatite-type oxide La with a particle size of about 300nm 9.33 Si 6 o 26 .
Embodiment 3
[0019] Preparation of apatite-type oxide La 9.33 Si 3 Ge 3 o 26 Electrolyte powder: put 0.00933mol of lanthanum nitrate, 0.003mol of ethyl silicate and 0.003mol of germanium chloride into a 50ml beaker containing 15ml of ethanol, stir and dissolve completely, add 0.02mol of glycine, stir and dissolve to form a sol; Heat and stir at 70°C on a magnetic stirrer to evaporate the solvent to form a gel; put the gel in an oven and dry at 70°C to form a raw powder; put the raw powder into a crucible and place it in a heating furnace at 950 Calcined at ℃ for 5 hours to obtain apatite-type oxide La with a particle size of about 150nm 9.33 Si 3 Ge 3 o 26 .
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