一种钠离子电池正极材料及其制备方法与应用
By leveraging the synergistic effect of modifiers and wetting agents, combined with spray drying technology, a uniformly carbon-coated sodium-ion battery cathode material was prepared, solving the problem of poor conductivity and improving battery performance.
CN117393732BActive Publication Date: 2026-07-17HEFEI GUOXUAN HIGH TECH POWER ENERGY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEFEI GUOXUAN HIGH TECH POWER ENERGY
- Filing Date
- 2023-11-21
- Publication Date
- 2026-07-17
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Figure CN117393732B_ABST
Abstract
本发明公开了一种钠离子电池正极材料及其制备方法与应用。本发明提供的正极材料包括如下组成：基体焦磷酸铁钠和包覆其表面的碳包覆层。本发明还提供利用表面处理工程制备所述正极材料的制备方法，包括：在研磨过程中添加修饰剂，修饰剂吸附在颗粒表面，产生位阻效应，阻止一次颗粒团聚，抑制返粗现象，从而降低颗粒粒径；烧结过程中添加浸润剂，浸润剂受热融化，降低了熔体的表界面张力，提高了体系的流动性和均一性，有效促进原料之间的界面融合。通过二者的协同效应有效降低粉体粒径，提高碳包覆均匀程度，所得正极材料组装的钠离子电池展现出优异的容量性能、倍率性能和循环性能。
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