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SYNTHESIS METHOD OF OXIDE POWDER WITH PEROVSKITE STRUCTURE AND OXIDE POWDER FORMED BY THE SYNTHESIS METHOD
A method for manufacturing an oxide powder having a perovskite structure according to the present invention comprises the following steps: preparing a metal precursor solution by mixing ethanol with a lanthanide metal precursor, a barium (Ba) precursor, a cobalt (Co) precursor, and a copper (Cu) precursor; performing a sol-gel reaction by mixing an ethylenediaminetetraacetic acid (EDTA) solution containing EDTA and ammonia water, the metal precursor solution and citric acid; drying a gelled compound formed by a sol-gel reaction; and calcining the dried compound. According to the method for manufacturing an oxide powder having a perovskite structure according to the present invention, it is possible to remarkably shorten the time required for gelation in a sol state, minimize the size of particles formed at the beginning to be controlled to the particle size of 50 nm or less.
본 발명의 페로브스카이트 구조를 갖는 산화물 분말의 제조 방법은 란탄족 금속 전구체, 바륨(Ba) 전구체, 코발트(Co) 전구체 및 구리(Cu) 전구체를 에탄올을 혼합하여 금속 전구체 용액을 준비하는 단계, EDTA(ethylenediaminetetraacetic acid)와 암모니아수를 포함하는 EDTA 용액, 상기 금속 전구체 용액 및 시트르산(citric acid)을 혼합하여 졸-겔 반응을 수행하는 단계, 상기 졸-겔 반응에 의해 형성된 겔화된 화합물을 건조시키는 단계 및 건조된 화합물을 하소시키는 단계를 포함한다.
SYNTHESIS METHOD OF OXIDE POWDER WITH PEROVSKITE STRUCTURE AND OXIDE POWDER FORMED BY THE SYNTHESIS METHOD
A method for manufacturing an oxide powder having a perovskite structure according to the present invention comprises the following steps: preparing a metal precursor solution by mixing ethanol with a lanthanide metal precursor, a barium (Ba) precursor, a cobalt (Co) precursor, and a copper (Cu) precursor; performing a sol-gel reaction by mixing an ethylenediaminetetraacetic acid (EDTA) solution containing EDTA and ammonia water, the metal precursor solution and citric acid; drying a gelled compound formed by a sol-gel reaction; and calcining the dried compound. According to the method for manufacturing an oxide powder having a perovskite structure according to the present invention, it is possible to remarkably shorten the time required for gelation in a sol state, minimize the size of particles formed at the beginning to be controlled to the particle size of 50 nm or less.
본 발명의 페로브스카이트 구조를 갖는 산화물 분말의 제조 방법은 란탄족 금속 전구체, 바륨(Ba) 전구체, 코발트(Co) 전구체 및 구리(Cu) 전구체를 에탄올을 혼합하여 금속 전구체 용액을 준비하는 단계, EDTA(ethylenediaminetetraacetic acid)와 암모니아수를 포함하는 EDTA 용액, 상기 금속 전구체 용액 및 시트르산(citric acid)을 혼합하여 졸-겔 반응을 수행하는 단계, 상기 졸-겔 반응에 의해 형성된 겔화된 화합물을 건조시키는 단계 및 건조된 화합물을 하소시키는 단계를 포함한다.
SYNTHESIS METHOD OF OXIDE POWDER WITH PEROVSKITE STRUCTURE AND OXIDE POWDER FORMED BY THE SYNTHESIS METHOD
페로브스카이트 구조를 갖는 산화물 분말의 제조 방법 및 이에 의해 제조된 산화물 분말
LEE HEE SOO (author) / RYU JI SEUNG (author) / KIM JU YOUNG (author) / JEON SEOL (author) / JO SEUNG HYEON (author) / KIM BU YOUNG (author)
2017-11-10
Patent
Electronic Resource
Korean
European Patent Office | 2017
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