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快充型石墨负极材料,D50 9 µm。专为高倍率性能设计的细颗粒石墨。较小的粒径缩短了锂离子的扩散路径,与常规石墨相比,在牺牲部分体积能量密度的前提下,支持更快的充电接受能力。
| 性能 | 典型值 |
|---|---|
| 粒径 D10 | 5.0 µm |
| 粒径 D50 | 9.1 µm |
| 粒径 D90 | 16.2 µm |
| 真密度 | 2.25 g/cm³ |
| 振实密度 | 1.05 g/cm³ |
| 比表面积 | 1.4 m²/g |
| 灰分 | 0.01% |
| 磁性杂质 (Fe+Cr+Ni+Zn) | 0.015 ppm |
| 首次放电容量 | 348.4 mAh/g |
| 首次放电效率 | 93.0% |
| 保质期 | 密封状态下 3 年 |
上述数据为典型值,而非保证限值。每批次订单均随附特定批次的分析证明书 (COA)。
| 负极材料 | 容量 | 首次循环效率 | 倍率性能 | 体积膨胀 | 最佳适用场景 |
|---|---|---|---|---|---|
| 天然石墨 | 360–372 mAh/g | 92–94% | 中等 | ~10% | 成本驱动型、高能量 |
| 快充型石墨 | 340–355 mAh/g | 92–94% | 高 | ~10% | 快速充电和高倍率应用 |
| 人造石墨 | 340–360 mAh/g | 93–95% | 良好 | ~10% | 长循环寿命 |
| MCMB | 300–330 mAh/g | 90–94% | 高 | ~10% | 基准参考研究 |
| 硅碳负极 (420) | 400–450 mAh/g | 85–90% | 中等 | 20–40% | 高能量混合负极 |
| 金属锂 | 3860 mAh/g | — | — | — | 半电池、锂金属研究 |
锂离子必须从颗粒表面扩散到中心。将颗粒半径减小一半,扩散时间大约可缩短至原来的四分之一;这就是为什么细颗粒石墨能够承受在粗颗粒负极上会导致析锂的电流强度。其代价是比表面积增大,导致形成固体电解质界面膜 (SEI) 时消耗更多的电解液,且首次循环效率和振实密度略有降低。
密封干燥保存。细颗粒石墨比粗颗粒级别具有更大的比表面积,吸潮速度更快;若容器已开启,浆料制备前请进行干燥处理。
欢迎联系我们获取价格、包装规格及当前交货周期。可根据需求提供安全数据表 (SDS) 和特定批次的分析证明书 (COA)。

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$166.99