Anisotropic crystallite size distributions in LiFePO4 powders

被引：4
|
作者：
Bobyl, Alexander [1 ]
Kasatkin, Igor [2 ]
机构：
[1] Ioffe Inst, Politekhnicheskaya Ul 26, St Petersburg 194021, Russia
[2] St Petersburg State Univ, Univ Skaya Nab 7-9, St Petersburg 199034, Russia
来源：
RSC ADVANCES | 2021年 / 11卷 / 23期
关键词：
X-RAY-DIFFRACTION; CATHODE MATERIAL; GRAIN-BOUNDARY; PHASE; PERFORMANCE; STRAIN; 1ST-PRINCIPLES; INTERCALATION; DEPENDENCE; PHOSPHATE;
D O I：
10.1039/d1ra02102h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The anisotropic crystallite sizes in high-performance LiFePO4 powders were measured by XRD and compared with the particle sizes found by TEM image analysis. Lognormal particle size distribution functions were determined for all three main crystallographic axes. A procedure was developed to determine the fraction of the composite particles which consists of several crystallites and contains small- and large-angle boundaries. In a sample with the most anisotropic crystallites (ratio of volume-weighted mean crystallite sizes L-V[001]/L-V[010] = 1.41) the number of the composite particles was at least 30%.
引用
收藏
页码：13799 / 13805
页数：7
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