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NCM523正极粉末 (LiNi₀.₅Co₀.₂Mn₀.₃O₂)。镍钴锰系列中性能平衡的“主力军”。相较于NCM622或NCM811,较低的镍含量意味着更高的热裕度、更长的循环寿命以及更易于处理的浆料,尽管其比容量有所牺牲——这也使其成为评估更高镍含量正极材料时的常用基准。
| 特性 | 典型值 |
|---|---|
| 化学成分 | LiNi₀.₅Co₀.₂Mn₀.₃O₂ (NCM523 / NMC532) |
| 外观 | 灰黑色粉末 |
| 放电容量 | 155–165 mAh/g (0.1C条件下) |
| 平均电压 | 3.7 V (vs Li/Li⁺) |
| 电压窗口 | 典型值 3.0–4.3 V |
| 形貌 | 多晶二次颗粒 |
上述数据为近期生产的典型值,非保证限值。每批货物均随附批次特定的分析证书(CoA)。
| 正极材料 | 容量 | 平均电压 | 热稳定性 | 循环寿命 | 钴含量 | 最佳用途 |
|---|---|---|---|---|---|---|
| LFP (磷酸铁锂) | 150–160 mAh/g | 3.2 V | 极佳 | 极佳 | 无 | 储能、长寿命、安全性要求高 |
| NCM523 | 155–165 mAh/g | 3.7 V | 良好 | 良好 | 中等 | 成本与性能平衡 |
| NCM622 | 175–185 mAh/g | 3.7 V | 一般 | 良好 | 较低 | 高能量、工作稳定性尚可 |
| NCM811 | 195–210 mAh/g | 3.7 V | 较低 | 中等 | 低 | 最大能量密度 |
| NCA | 190–210 mAh/g | 3.7 V | 较低 | 良好 | 低 | 高能量与高功率 |
NCM也可写作NMC;两者均指锂镍钴锰氧化物。镍含量的增加提高了容量并降低了钴成本,但也降低了热稳定性并增加了对水分的敏感性——这种权衡正是正极材料选择的核心考量。
高镍粉末具有吸湿性和碱性。吸潮后会在表面形成LiOH和Li₂CO₃,从而升高pH值、导致PVDF浆料凝胶化,并在成品电池中产生气体。请密封储存,快速称量,并尽可能在干燥空气或手套箱中操作。切勿将开口容器留在实验台上过夜。
如需价格、包装规格和当前交货周期,请联系我们。可应要求提供安全数据表(SDS)和批次特定的分析证书。

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