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Preparation method of flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nanoparticles
The invention relates to a preparation technology of conductive ceramic powder, and aims to provide a preparation method of flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nanoparticles. Comprising the following steps: dissolving cobalt acetate tetrahydrate, lanthanum acetate and strontium acetate in deionized water; adding copper nitrate, uniformly mixing, adding a chelating agent, adjusting the pH value to 9.5, and stirring under a heating condition until sol with viscosity is formed; keeping the temperature of the sol at 180 DEG C for 30 hours, and washing and drying the solid to obtain a precursor; and carrying out calcination treatment to obtain the flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nano particles. According to the invention, the technical advantages of the sol-gel method and the hydrothermal method are comprehensively utilized to provide the sol-hydrothermal method for preparing the conductive ceramic powder, and the method has the advantages of simple reaction conditions, low raw material cost and high yield. The product obtained by the invention has the comprehensive electric contact performance such as higher specific area, excellent wettability with silver, good conductivity and the like, so that the product has a good application prospect in the related fields such as electric contact and the like.
本发明涉及导电陶瓷粉体的制备技术，旨在提供一种由纳米颗粒组装的薄片状Cu@La1/2Sr1/2CoO3导电陶瓷粉体的制备方法。包括：将乙酸钴四水合物、乙酸镧和乙酸锶溶于去离子水中；加入硝酸铜并混匀后添加螯合剂，调整pH值为9.5后，在加热条件下搅拌至形成具有粘度的溶胶；溶胶在180℃条件下保温30个小时，固体洗涤、烘干得到前驱体；经煅烧处理，获得由纳米颗粒组装的薄片状Cu@La1/2Sr1/2CoO3导电陶瓷粉体。本发明综合利用溶胶凝胶法和水热法的技术优势提出溶胶水热法制备导电陶瓷粉体，具有反应条件简单、原料成本低、产量高的优点。本发明获得的产品具有更高的比面积，与银润湿性极好、导电性能好等综合电接触性能，因而电接触等相关领域得到良好的应用前景。
Preparation method of flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nanoparticles
The invention relates to a preparation technology of conductive ceramic powder, and aims to provide a preparation method of flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nanoparticles. Comprising the following steps: dissolving cobalt acetate tetrahydrate, lanthanum acetate and strontium acetate in deionized water; adding copper nitrate, uniformly mixing, adding a chelating agent, adjusting the pH value to 9.5, and stirring under a heating condition until sol with viscosity is formed; keeping the temperature of the sol at 180 DEG C for 30 hours, and washing and drying the solid to obtain a precursor; and carrying out calcination treatment to obtain the flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nano particles. According to the invention, the technical advantages of the sol-gel method and the hydrothermal method are comprehensively utilized to provide the sol-hydrothermal method for preparing the conductive ceramic powder, and the method has the advantages of simple reaction conditions, low raw material cost and high yield. The product obtained by the invention has the comprehensive electric contact performance such as higher specific area, excellent wettability with silver, good conductivity and the like, so that the product has a good application prospect in the related fields such as electric contact and the like.
本发明涉及导电陶瓷粉体的制备技术，旨在提供一种由纳米颗粒组装的薄片状Cu@La1/2Sr1/2CoO3导电陶瓷粉体的制备方法。包括：将乙酸钴四水合物、乙酸镧和乙酸锶溶于去离子水中；加入硝酸铜并混匀后添加螯合剂，调整pH值为9.5后，在加热条件下搅拌至形成具有粘度的溶胶；溶胶在180℃条件下保温30个小时，固体洗涤、烘干得到前驱体；经煅烧处理，获得由纳米颗粒组装的薄片状Cu@La1/2Sr1/2CoO3导电陶瓷粉体。本发明综合利用溶胶凝胶法和水热法的技术优势提出溶胶水热法制备导电陶瓷粉体，具有反应条件简单、原料成本低、产量高的优点。本发明获得的产品具有更高的比面积，与银润湿性极好、导电性能好等综合电接触性能，因而电接触等相关领域得到良好的应用前景。
Preparation method of flaky Cu-coated La1/2Sr1/2CoO3 conductive ceramic powder assembled by nanoparticles
由纳米颗粒组装的薄片状Cu@La1/2Sr1/2CoO3导电陶瓷粉体的制备方法
WANG DASHUAI (author) / SHAO ZIYANG (author) / LI YUE (author) / WANG KAIXU (author) / SHEN TAO (author) / ZHENG JINXIANG (author) / YANG HUI (author)
2023-04-04
Patent
Electronic Resource
Chinese
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