Synthesis of almost stoichiometric nanosized cathode materials Li1-xNi1+xO2 by a combined method and study of their physical and electrochemical characteristics: microstructures

Cathode materials based on almost stoichiometric lithium nickelates have been synthesized. Samples were nanosized. The materials composition was Li0.98Ni1.02О2 (Sample 4) and Li0.79Ni1.21О2 (Sample 6). The sample 4 was synthesized at the following conditions: Li:Ni = 10:1; threatment temperature T=700C; treatment time t = 60 min. The sample 6 was synthesized at the following conditions: Li:Ni = 10:1; threatment temperature T=700C; treatment time t = 30 min. SEM images were obained by SEM LEO-420 scanning electron microscope (Carl Zeiss, Germany). The ScanMaster (National research nuclear university (MEPHI), Moscow Engineering Physics Institute, Russia) program was used for mathematical processing of images and calculation of grain sizes.

基于近化学计量比的锂镍酸锂阴极材料已成功合成。样品具有纳米尺寸。其材料组成为Li0.98Ni1.02О2（样品4）和Li0.79Ni1.21О2（样品6）。样品4的合成条件如下：锂镍摩尔比为10:1；处理温度T为700摄氏度；处理时间t为60分钟。样品6的合成条件如下：锂镍摩尔比为10:1；处理温度T为700摄氏度；处理时间t为30分钟。采用SEM LEO-420扫描电子显微镜（德国蔡司公司）获取了SEM图像。图像的数学处理及晶粒尺寸的计算使用了ScanMaster程序（俄罗斯国家研究型核大学（MEPHI），莫斯科工程物理学院开发）。