一种钠离子电池正极浆料及其防凝胶制备方法和应用

By employing a multi-stage dispersion process and binder slow-release technology, the gelation reaction problem of sodium-ion battery cathode slurry was solved, improving slurry stability and battery performance, achieving both environmental friendliness and cost-effectiveness.

CN120727752BActive Publication Date: 2026-07-17阜阳海钠科技有限责任公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
阜阳海钠科技有限责任公司
Filing Date
2025-06-26
Publication Date
2026-07-17

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Abstract

本发明提供了一种钠离子电池正极浆料及其防凝胶制备方法,制备方法如下:S1、将导电剂、分散剂与去离子水混合,在惰性气氛下进行超声处理,形成预分散液;S2、将正极活性物质分批次加入预分散液,采用低速‑高速交替搅拌;S3、将粘结剂溶解于去离子水中,并以0.3~1mL / min的速率注入混合体系,同步开启真空脱泡;S4、将步骤S3后的料液过滤后,静置熟化,粘度控制在2500~3500mPa·s。本发明还提供了一种钠离子电池正极极片,采用上述浆料经涂布、烘干、辊压制成。采用本发明方法制备正极浆料,可有效解决高pH值敏感材料与水性粘结剂的相容性问题,提升浆料稳定性和电池性能,同时具有成本低、环保等优点。
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