High-conductivity solid electrolyte prepared by sol-gel method
A solid electrolyte, sol-gel technology, applied in the field of high-conductivity solid electrolytes, can solve the problems of large grain boundary resistance of solid electrolytes, difficult recycling of impurities, heat treatment temperature sensitivity, etc., and achieves low heat treatment temperature sensitivity, high density, The effect of low grain boundary resistance
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[0041] Example 1
[0042] A high-conductivity solid electrolyte prepared by the sol-gel method, using lithium nitrate as the dopant and lithium aluminum titanium phosphate (LATP) as the main material. The dopant is embedded in the lithium aluminum titanium phosphate (LATP) by the sol-gel method. ) In the skeleton, a NASICON structure is formed;
[0043] The preparation method of the high-conductivity solid electrolyte includes the following steps:
[0044] S1 preparation solution A: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 The stoichiometric ratio of tetrabutyl titanate was weighed, and ammonia was added and washed with suction for several times. Then tetrabutyl titanate was slowly added to 0.4mol / L citric acid aqueous solution, heated and magnetically stirred for 6 hours to form a clear liquid, namely Get solution A;
[0045] S2 preparation solution B: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 Weigh lithium acetate, ammonium dihydrogen phosphate, and citric acid according to th...
Example Embodiment
[0051] Example 2
[0052] A high-conductivity solid electrolyte with germanium oxide as the dopant and lithium titanium aluminum phosphate (LATP) as the main material. The dopant is embedded in the lithium aluminum titanium phosphate (LATP) framework by the sol-gel method to form NASICON Structure; structural formula after doping is Li 1.3 Al 0.3 Ti 1.6 Ge 0.1 (PO 4 ) 3 ;
[0053] The preparation method of the high-conductivity solid electrolyte includes the following steps:
[0054] S1 preparation solution A: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 The stoichiometric ratio of tetrabutyl titanate was weighed, and ammonia was added and washed with suction for several times. Then tetrabutyl titanate was slowly added to 0.4mol / L citric acid aqueous solution, heated and magnetically stirred for 6 hours to form a clear liquid, namely Get solution A;
[0055] S2 preparation solution B: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 Weigh lithium nitrate, ammonium dihydrogen phosphate, and...
Example Embodiment
[0061] Example 3
[0062] A high-conductivity solid electrolyte prepared by the sol-gel method, using tetraethyl orthosilicate as the dopant and lithium aluminum titanium phosphate (LATP) as the main material. The dopant is embedded in the titanium aluminum phosphate by the sol-gel method In the lithium (LATP) framework, a NASICON structure is formed; the structural formula after doping is Li 1.3 Al 0.3 Ti 1.6 Si 0.1 (PO 4 ) 3 ;
[0063] The preparation method of the high-conductivity solid electrolyte includes the following steps:
[0064] S1 preparation solution A: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 The stoichiometric ratio of tetrabutyl titanate was weighed, and ammonia was added and washed with suction for several times. Then tetrabutyl titanate was slowly added to 0.4mol / L citric acid aqueous solution, heated and magnetically stirred for 6 hours to form a clear liquid, namely Get solution A;
[0065] S2 preparation solution B: according to Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3...
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