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Preparation method of graphite-based composite bipolar plate
The invention relates to a preparation method of a graphite-based composite bipolar plate, and belongs to the technical field of batteries. The preparation method comprises the following steps of: (1) adding 60.0%-90.0% of a graphite matrix, 5.0%-30.0% of resin, 0-10.0% of a conductive filler and 0.1%-3.0% of a coupling agent into a mixing mill, and mixing the materials at 100-350 DEG C for 5-30 minutes to obtain a mixed mixture; (2) putting the mixed mixture in the step (1) into a screw extruder, and extruding the mixture at 100-350 DEG C to obtain a prefabricated plate; and (3) cutting the prefabricated plate obtained in the step (2) to obtain a prefabricated section plate, placing the prefabricated section plate in a pressing mold, and carrying out mold pressing at 100-350 DEG C to obtain the graphite-based composite bipolar plate. According to the preparation method of the graphite-based composite bipolar plate of the invention, the raw materials are treated and the prefabricated plate is prepared, so that the time of the mold pressing process is greatly shortened, the production efficiency is well improved, and continuous production can be realized.
本申请涉及一种石墨基复合双极板的制备方法，属于电池技术领域。该制备方法包括如下步骤：(1)将60.0％‑90.0％石墨基体、5.0％‑30.0％树脂、0‑10.0％导电填充物以及0.1％‑3.0％偶联剂加入混炼机中，于100℃‑350℃进行混炼5‑30min，得到混炼混合物；(2)将步骤(1)的混炼混合物置于螺杆挤出机中，于100℃‑350℃挤出，得到预制板；(3)将步骤(2)的预制板进行裁切，得到预制段板，将预制段板置于压制模具中，于100℃‑350℃进行模压，得到石墨基复合双极板。本发明通过对原材料进行处理并制备预制板，极大地缩短了模压工艺过程的时间，很好地提高了生产效率，可实现连续化生产。
Preparation method of graphite-based composite bipolar plate
The invention relates to a preparation method of a graphite-based composite bipolar plate, and belongs to the technical field of batteries. The preparation method comprises the following steps of: (1) adding 60.0%-90.0% of a graphite matrix, 5.0%-30.0% of resin, 0-10.0% of a conductive filler and 0.1%-3.0% of a coupling agent into a mixing mill, and mixing the materials at 100-350 DEG C for 5-30 minutes to obtain a mixed mixture; (2) putting the mixed mixture in the step (1) into a screw extruder, and extruding the mixture at 100-350 DEG C to obtain a prefabricated plate; and (3) cutting the prefabricated plate obtained in the step (2) to obtain a prefabricated section plate, placing the prefabricated section plate in a pressing mold, and carrying out mold pressing at 100-350 DEG C to obtain the graphite-based composite bipolar plate. According to the preparation method of the graphite-based composite bipolar plate of the invention, the raw materials are treated and the prefabricated plate is prepared, so that the time of the mold pressing process is greatly shortened, the production efficiency is well improved, and continuous production can be realized.
本申请涉及一种石墨基复合双极板的制备方法，属于电池技术领域。该制备方法包括如下步骤：(1)将60.0％‑90.0％石墨基体、5.0％‑30.0％树脂、0‑10.0％导电填充物以及0.1％‑3.0％偶联剂加入混炼机中，于100℃‑350℃进行混炼5‑30min，得到混炼混合物；(2)将步骤(1)的混炼混合物置于螺杆挤出机中，于100℃‑350℃挤出，得到预制板；(3)将步骤(2)的预制板进行裁切，得到预制段板，将预制段板置于压制模具中，于100℃‑350℃进行模压，得到石墨基复合双极板。本发明通过对原材料进行处理并制备预制板，极大地缩短了模压工艺过程的时间，很好地提高了生产效率，可实现连续化生产。
Preparation method of graphite-based composite bipolar plate
一种石墨基复合双极板的制备方法
WANG JUNHAO (author) / GAO PENGRAN (author) / ZHANG HUANONG (author)
2021-10-29
Patent
Electronic Resource
Chinese
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