Leading silicon-based anode material for lithium batteries, SiC material
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The commercial graphite anode capacity is around 360mAh/g, which is very close to its theoretical specific capacity of 372mAh/g. In comparison, the theoretical specific capacity of silicon materials is very high (Li22Si5 formed at high temperature, corresponding to a capacity of 4200 mAh/g; Li15Si4 formed at room temperature, corresponding to a capacity of 3579 mAh/g; for comparison of volumetric energy density, graphite is 837mAh/cm3, Li15Si4 is 9786mAh/cm3). Compared with other anode materials, the delithiation voltage is also low (~0.5V), only slightly higher than graphite. Therefore, silicon-based materials are expected to become the supporting anode materials for high-energy density lithium batteries, with high nickel NCM811/NCA positive electrode for best results.
In the Si/C composite system, Si particles are used as active materials to provide lithium storage capacity; C can not only restrain and buffer the volume change of the silicon anode during charge and discharge, but also prevent Si particles from agglomerating during charge and discharge cycles; Prevent the electrolyte from penetrating to the center and maintain a stable interface and SEI.AFT-SiC Unit SiC400 SiC420 SiC450 SiC480 SiC550 SiC650 Particle Size Dmin μm ≥1.0 ≥1.0 ≥1.0 ≥1.0 ≥1.0 ≥1.0 D10 8.0±2.0 8.0±2.0 7.5±2.0 7.5±2.0 7±2.0 6.5±2.0 D50 16.5±2.0 16.5±2.0 16.5±2.0 16.0±2.0 15.5±2.0 15.5±2.0 D90 31.0±2.5 30.0±2.5 30.0±2.5 30.0±3.0 30.0±3.0 30.0±3.0 Dmax ≤65.0 ≤65 ≤65 ≤65.0 ≤65.0 ≤65.0 Tap Density g/cm3 0.9±0.10 0.9±0.10 0.9±0.10 ＞0.9 ＞0.9 0.85±0.10 Surface Area m2/g ≤2.5 ≤2.5 ≤2.5 ≤2.5 ≤5.0 ≤5.0 0.1C Discharge Capacity mAh/g ≥400 420±5 450±5 480±5 550±5 650±5 0.1C First Discharge Efficiency % ≥92.5 ≥92.0 ≥91.5 ≥90.5 ≥89 ≥88 Moisture Content % ≤5000 ≤5000 ≤5000 ≤5000 ≤5000 ≤5000 Ferrum content ppm <50 <50 <50 <50 <50 <50 Note: The above data is AFT measured data, different test equipment and methods will cause the test data to fluctuate
Scanning electron micrograph
SiC400 SiC and Graphite Composite SiC420 SiC and Graphite Composite 
SiC450 SiC and Graphite Composite SiC480 SiC and Graphite Composite 
SiC550 SiC and Graphite Composite SiC650 SiC and Graphite Composite 
Storage Condition
1、Suggest storage temperature and humidity controlled below 40 ℃ and 60 %RH, respectively, for brandnew; After opening, please use it up as soon as possible.
2、After opening for 1 hour, it is a natural phenomenon for moisture regain, implying that moisture content of powder could be increased to 3000 ppm. Suggest drying it again before use.
Delivery Time:In Stock
