一种毛线团状磷酸铁及其制备方法
By controlling the liquid phase environment and calcination treatment, a ball-shaped iron phosphate was prepared, which solved the problem of insufficient capacity of iron phosphate batteries in the existing technology and achieved a significant improvement in battery capacity.
CN118026119BActive Publication Date: 2026-07-17GANSU DONGFANG TITANIUM IND CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GANSU DONGFANG TITANIUM IND CO LTD
- Filing Date
- 2023-08-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing technologies, the particle morphology of iron phosphate makes it difficult to achieve a battery capacity of over 160 mAh/g when it is made into a button cell.
Method used
By controlling the liquid phase environment during the reaction, tufted ferric phosphate is prepared, including the ratio and stirring speed of mixed ferric sulfate solution, glycerol solution and concentrated phosphoric acid, controlling the particle size distribution and calcining treatment to obtain monodisperse tufted ferric phosphate.
Benefits of technology
The battery capacity of the button cell was improved, with the yarn-shaped iron phosphate battery achieving a significant capacity increase of 163 mAh/g at 0.2C and 154 mAh/g at 1C.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN118026119B_ABST
Abstract
本发明提供了一种毛线团状磷酸铁的制备方法，包括：将硫酸铁溶液与丙三醇溶液进行混合；将质量百分浓度为85%的浓磷酸加入硫酸铁溶液与丙三醇溶液混合液；继续加入质量百分浓度为10%的氢氧化钠溶液，直到混合液的PH值为1.85；以450~650r / min的搅拌速度搅拌混合液，并将混合液加热至95℃，待混合液的颜色由淡黄色变为淡粉色，降低搅拌速度至250~450r / min，保温1h；停止加热与搅拌，自然冷却至室温，将混合液静置10~20h；继续搅拌混合液，并升温至75℃，保温2.5h后停止加热，自然冷却至室温；对混合液进行抽滤、洗涤、烘干和煅烧，得到毛线团状磷酸铁。
Need to check novelty before this filing date? Find Prior Art