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N-甲基-2-吡咯烷酮 (NMP),电池级。 PVDF 粘结剂体系的标准溶剂,也是制备正极浆料的默认介质。NMP 能轻易溶解 PVDF,其高沸点提供了宽泛的涂布窗口,并在干燥过程中可完全挥发。
| 特性 | 数值 |
|---|---|
| 化学名称 | N-甲基-2-吡咯烷酮 |
| CAS 号 | 872-50-4 |
| 分子式 | C₅H₉NO |
| 分子量 | 99.13 g/mol |
| 外观 | 透明无色液体 |
| 沸点 | 202–204 °C |
| 熔点 | −24 °C |
| 密度 | 25 °C 时约 1.03 g/mL |
| 闪点 | 约 91 °C |
| 水溶性 | 完全混溶 |
| 等级 | 电池级 — 低水分、低金属含量 |
可应要求提供完整规格说明书及特定批次的分析证明书 (CoA)。
| 体系 | 溶剂 | 典型用途 | 优势 | 权衡 |
|---|---|---|---|---|
| CMC + SBR | 水 | 石墨和硅负极 | 无需溶剂回收,成本低,安全 | 不适用于对水敏感的活性物质 |
| PVDF | NMP | 正极,部分负极 | 电化学窗口宽 | 溶剂有毒,回收成本高 |
| PAA / PAA-Na | 水 | 高硅负极 | 可耐受体积剧烈变化 | 干燥过度易变脆 |
| LA132 / LA133 | 水 | 正极和负极 | 水系正极工艺 | 供应源较窄 |
NMP 与水完全互溶且具有吸湿性。带入正极浆料中的水分会与富镍表面残留的锂发生反应,导致 pH 值升高并使 PVDF 凝胶化;任何残留到干燥阶段之后的水分都会在成品电芯中腐蚀 LiPF₆ 电解质。请保持容器密封,切勿暴露在大气中,并在进行关键操作时使用新开封的试剂。
NMP 被列为生殖毒性物质(欧盟 H360D — 可能损害胎儿),并在欧盟及其他地区受 REACH 法规关于职业接触限值的限制。请在通风橱内使用,并佩戴丁腈手套和护目镜,操作前请确认当地的接触限值规定。许多实验室正转向使用水系粘结剂体系以彻底消除该物质。订购前请仔细阅读安全技术说明书 (SDS)。
请联系我们获取定价、包装规格及当前的交付周期。可应要求提供安全技术说明书 (SDS) 和特定批次的分析证明书 (CoA)。

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