摘要
研究了LiCoO2合成粉体过程对镁铝尖晶石陶瓷的侵蚀,并探讨了相关侵蚀机制。研究结果显示,经历10次的LiCoO2粉体合成过程后,镁铝尖晶石陶瓷的平均被侵蚀深度仅约100μm;其侵蚀机制为:含锂化合物先于含钴化合物对镁铝尖晶石陶瓷进行侵蚀并形成LixMyOz(M=Al/Mg)化合物,含钴化合物进一步侵蚀渗透形成LixM'yOz(M'=Al/Mg/Co)化合物并从LixMyOz(M=Al/Mg)化合物中析出。研究认为,用镁铝尖晶石陶瓷制备合成钴酸锂粉体用匣钵具有良好的抗侵蚀性能。
In this paper, the erosion resistance of the magnesia-alumina spinel (MAS) in the synthesis process of lithium cobahoxide and the related mechanism were studied. After ten cycles of the synthesis process, the erosion depth in the MAS ceramic is only about 100μm. The MAS material shows good properties. Further researches on the erosion mechanism suggest that the H-containing compound firstly react with the MAS ceramic, with LixMyOz(M=M/Ms)(M =Al/Mg) compound as by-product; then the LixMyOz(M=M/Ms)(M'= Al/Mg/Co) compound forms due to the further permeation of Co-containing compound and separates out from the LixMyOz(M=M/Ms)( M = Al/Mg) compound.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2011年第3期515-518,共4页
Bulletin of the Chinese Ceramic Society
基金
国家863重点项目(2009AA032501)
北京科技新星计划A类资助项目(2007A080)
关键词
钴酸锂合成
镁铝尖晶石
侵蚀机制
synthesis of lithium cobaltoxide
magnesia-alumina spinel
erosion mechanism