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Method for synthesizing lithium titanium aluminum phosphate
The invention relates to the technical field of lithium battery materials, discloses a lithium titanium aluminum phosphate synthesis method, and solves the problems that in the prior art, ammonium phosphate salt is usually adopted as a synthesis raw material in the LATP synthesis process, a large amount of alkaline gas is generated in the sintering process, particles are separated and are difficult to react uniformly, and meanwhile, the particles react with a sagger to be bonded and are difficult to demould. According to the lithium titanium aluminum phosphate synthesis method, materials are preliminarily mixed in a wet and dry grinding mode, the mixture is subjected to low-temperature sintering in a graphite plate, a graphite crucible or a ceramic sagger subjected to surface graphite or other alkali corrosion resisting pretreatment, and a precursor capable of being rapidly separated from the sagger is obtained; and after foreign matters attached to the surface of the precursor are cleaned, secondary powder mixing, filtering and drying are performed in a wet grinding manner, high-temperature secondary sintering is performed, a conventional ceramic sagger can be adopted for secondary sintering, and the method has the advantages of high sintered product yield, easiness in demolding, uniform reaction and the like, and is high in practicability.
本发明涉及锂电材料技术领域，且公开了一种磷酸钛铝锂合成方法，解决了现有技术中，LATP合成过程中通常采用磷铵盐做为合成原料，在烧结过程中会产生大量碱性气体，使得颗粒之间分离，难以反应均匀，同时与匣钵反应粘结，难以脱模的问题。该磷酸钛铝锂合成方法，通过湿法以及干法研磨的方式将物料初步混合，混合物采用石墨板，石墨坩埚，或者经过表面石墨或其它耐碱腐蚀预处理过的陶瓷匣钵中进行低温烧结，得到能够快速从匣钵中脱离的前驱体，清洗前驱体表面沾染的异物后再通过湿法研磨方式，二次混合粉体，过滤后烘干，进行高温二次烧结，二次烧结可以采用常规陶瓷匣钵，具备烧结成品高、易脱模、反应均匀等优点，实用性高。
Method for synthesizing lithium titanium aluminum phosphate
The invention relates to the technical field of lithium battery materials, discloses a lithium titanium aluminum phosphate synthesis method, and solves the problems that in the prior art, ammonium phosphate salt is usually adopted as a synthesis raw material in the LATP synthesis process, a large amount of alkaline gas is generated in the sintering process, particles are separated and are difficult to react uniformly, and meanwhile, the particles react with a sagger to be bonded and are difficult to demould. According to the lithium titanium aluminum phosphate synthesis method, materials are preliminarily mixed in a wet and dry grinding mode, the mixture is subjected to low-temperature sintering in a graphite plate, a graphite crucible or a ceramic sagger subjected to surface graphite or other alkali corrosion resisting pretreatment, and a precursor capable of being rapidly separated from the sagger is obtained; and after foreign matters attached to the surface of the precursor are cleaned, secondary powder mixing, filtering and drying are performed in a wet grinding manner, high-temperature secondary sintering is performed, a conventional ceramic sagger can be adopted for secondary sintering, and the method has the advantages of high sintered product yield, easiness in demolding, uniform reaction and the like, and is high in practicability.
本发明涉及锂电材料技术领域，且公开了一种磷酸钛铝锂合成方法，解决了现有技术中，LATP合成过程中通常采用磷铵盐做为合成原料，在烧结过程中会产生大量碱性气体，使得颗粒之间分离，难以反应均匀，同时与匣钵反应粘结，难以脱模的问题。该磷酸钛铝锂合成方法，通过湿法以及干法研磨的方式将物料初步混合，混合物采用石墨板，石墨坩埚，或者经过表面石墨或其它耐碱腐蚀预处理过的陶瓷匣钵中进行低温烧结，得到能够快速从匣钵中脱离的前驱体，清洗前驱体表面沾染的异物后再通过湿法研磨方式，二次混合粉体，过滤后烘干，进行高温二次烧结，二次烧结可以采用常规陶瓷匣钵，具备烧结成品高、易脱模、反应均匀等优点，实用性高。
Method for synthesizing lithium titanium aluminum phosphate
一种磷酸钛铝锂合成方法
YANG LUFENG (author) / ZHANG ZHIFENG (author) / MIAO YANG (author)
2023-11-03
Patent
Electronic Resource
Chinese
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