摘要
分别以硝酸锂(LiNO3)和硝酸锰(Mn(NO3)2)为锂源和锰源,碳酸铵为沉淀剂,在螺旋通道型旋转床中进行共沉淀反应制备了尖晶石LiMn2O4前驱体,然后在微波马弗炉中750℃煅烧2h可得到纳米尖晶石LiMn2O4。采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)等方法对样品进行表征。结果表明,采用超重力反应共沉淀法可以获得结晶度高、粒径均匀、平均粒径约为60nm的纳米尖晶石LiMn2O4粉体。
Spinel lithium manganate precursor were prepared by co-precipitation method in a rotating Pea with helix channels （RBHC） using lithium nitrate and manganous nitrateas as lithium source and manganese source, ammonium carbonate as precipitant. Nanosized spinel lithium manganate powders were obtained upon micro- wave calcination at temperature of 750℃ over 2h. The phase structures and morphologies were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transform electron microscopy（TEM）. The results showe that nano spinel LiMn204 powders with high crystallinity, uniform particle size, the average size of about 60nm can be synthesized by high gravity reactive co-precipitation method.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第16期2437-2440,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20976147)
湖南省高校科技创新团队基金资助项目(湘教通[2008]244号)
关键词
螺旋通道型旋转床
超重力
共沉淀法
纳米
LIMN2O4
rotating bed with helix channels
high-gravity
co-precipitation process
nano-meter
lithium manganate
