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天然石墨负极材料,D50 15 µm。用于锂离子电池负极的球形高容量天然石墨。首次放电容量超过 360 mAh/g,且灰分和磁性杂质含量极低,非常适合电池研发及中试生产。
| 属性 | 规格 |
|---|---|
| 外观 | 黑色粉末 |
| 粒径 D10 | 9.0 ± 1.5 µm |
| 粒径 D50 | 15.2 ± 1.5 µm |
| 粒径 D90 | 26.5 ± 3.5 µm |
| 真密度 | ≥ 2.10 g/cm³ |
| 振实密度 | 1.03 – 1.12 g/cm³ |
| 比表面积 | 1.6 – 2.4 m²/g |
| 灰分含量 | ≤ 0.10% |
| 磁性杂质 (Fe+Cr+Ni+Zn) | ≤ 0.2 ppm |
| 首次放电容量 | ≥ 362.0 mAh/g |
| 首次库伦效率 | ≥ 92.0% |
| 保质期 | 密封状态下 3 年 |
每批出货均随附批次特定的分析证书 (COA)。以上数值为产品规格,非单一批次实测结果。
| 负极材料 | 容量 | 首周效率 | 倍率性能 | 体积膨胀 | 最佳用途 |
|---|---|---|---|---|---|
| 天然石墨 | 360–372 mAh/g | 92–94% | 中等 | ~10% | 成本驱动,高能量 |
| 快充石墨 | 340–355 mAh/g | 92–94% | 高 | ~10% | 快速充电及高倍率 |
| 人造石墨 | 340–360 mAh/g | 93–95% | 良好 | ~10% | 长循环寿命 |
| MCMB(中间相碳微球) | 300–330 mAh/g | 90–94% | 高 | ~10% | 参考及基准测试 |
| 硅碳负极 (420) | 400–450 mAh/g | 85–90% | 中等 | 20–40% | 高能量密度混合材料 |
| 金属锂 | 3860 mAh/g | — | — | — | 半电池、锂金属研究 |
天然石墨因其晶体结构更接近理想状态,具有更高的容量和更低的单位安时成本。人造石墨由于结构更加无序,能够抵抗剥离,因此循环寿命更长且更耐快速充电。大多数商用负极会将两者混合使用。当设计侧重于能量密度和成本时,请优先选择天然石墨;当侧重于循环寿命时,则选择人造石墨。
请密封干燥保存。石墨具有吸湿性;若容器已开封,在制浆前请进行干燥处理。仅在粉末远离钢制铲具和未经内衬的研磨机时,方可确保磁性杂质指标。
如需了解定价、包装规格及当前交货期,请联系我们。可按要求提供安全数据表 (SDS) 及特定批次的分析证书 (COA)。

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$109.99