Lithium-containing zirconium phosphate, calcined powder of same, and method for producing sintered body
A manufacturing method, lithium phosphoric acid technology, applied in chemical instruments and methods, phosphorus compounds, solid electrolytes, etc., can solve the problems of no clear regulations, no phosphoric acid concentration immobilization, etc., and achieve high temperature heat resistance and excellent mechanical strength.
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Embodiment 1-1～1-15
[0078] Preparation of Li as starting material 2 CO 3 , ZrO 2 , CaCO 3 and NH 4 h 2 PO 4 , only change the amount of P and weigh the specified amount respectively, so that the composition shown in Table 1 can be reached after sintering.
[0079] Then, these weighed objects were put into a zirconia pot mill and mixed for 16 hours to obtain a mixed powder, which was calcined at 800° C. in an air atmosphere, and pulverized to obtain a calcined powder.
[0080] The calcined powder was molded at a pressure of 100 MPa, and then sintered at a temperature of 800 to 1500° C. shown in Table 1 to obtain a lithium-containing zirconium phosphate sintered body (sample).
[0081] All the lithium-containing zirconium phosphates shown in Table 1 were subjected to powder X-ray diffraction measurement, and as a result, the main constituent phases were all NASICON-type structures. figure 1 The powder X-ray diffraction pattern at room temperature of the lithium-containing zirconium phosphate...
Embodiment 2-1～2-8
[0083] Preparation of Li as starting material 2 CO 3 , ZrO 2 , CaCO 3 and NH 4 h 2 PO 4 , only changing the amount of Li and weighing the specified amount respectively, so that the composition shown in Table 2 can be reached after sintering.
[0084] Then, sample preparation and sample evaluation (powder X-ray diffraction measurement) were carried out in the same manner as in Example 1.
[0085] All the lithium-containing zirconium phosphates shown in Table 2 were subjected to powder X-ray diffraction measurement, and as a result, the main constituent phases were all NASICON-type structures.
Embodiment 3-1～3-6
[0087] Preparation of Li as starting material 2 CO 3 , ZrO 2 , CaCO 3 and NH 4 h 2 PO 4 , changing only M 1 The amounts of (Ca) were weighed in predetermined amounts so that the compositions shown in Table 3 were obtained after sintering.
[0088] Then, sample preparation and sample evaluation (powder X-ray diffraction measurement) were carried out in the same manner as in Example 1.
[0089] All the lithium-containing zirconium phosphates shown in Table 3 were subjected to powder X-ray diffraction measurement, and as a result, the main constituent phases were all NASICON-type structures.
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