Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of coking coal-based high-rate graphite negative electrode material
The invention provides a preparation method of a coking coal-based high-rate graphite negative electrode material, wherein the preparation method comprises the following steps: step 1, crushing coking coal: crushing the coking coal into powder with the average particle size of 4-8 microns; step 2, molding: carrying out compression molding on the coking coal powder to become blocky coking coal, wherein the molding pressure is 2 MPa; step 3, roasting: roasting the blocky coking coal in a roasting furnace at the temperature of 1000 DEG C; step 4, secondary crushing: performing secondary crushing on the roasted product to obtain carbonized coking coal powder with the average particle size of 10-14 microns; and step 5, graphitizing: graphitizing the carbonized coking coal powder in an Acheson graphitizing furnace at the temperature of 3000 DEG C. According to the invention, the coking coal with a certain index is successively subjected to crushing, molding, roasting, secondary crushing, graphitization and other processes to prepare the graphite negative electrode material applied to a high-rate lithium ion battery; compared with an existing high-rate negative electrode material preparation method in the market, the method disclosed by the invention is lower in production cost, higher in yield and better in battery processing performance.
本发明提出一种焦煤基高倍率石墨负极材料的制备方法，包括以下步骤：步骤一、焦煤粉碎，将焦煤粉碎至平均粒度为4‑8μm的粉体；步骤二、成型，焦煤粉体经模压成型变为块体焦煤，成型压力为2MPa；步骤三、焙烧，块状焦煤在1000℃的焙烧炉中进行焙烧；步骤四、二次粉碎，焙烧品经过二次粉碎得到平均粒度为10‑14μm的碳化焦煤粉体；步骤五、石墨化，碳化焦煤粉体在3000℃的艾奇逊石墨化炉中进行石墨化。本发明将一定指标的焦煤先后经粉碎、成型、焙烧、二次粉碎、石墨化等工序，制得应用于高倍率锂离子电池的石墨负极材料；与市场现有的高倍率负极材料制备方法相比，本发明所示方法生产成本更低、产量更高、电池加工性能更好。
Preparation method of coking coal-based high-rate graphite negative electrode material
The invention provides a preparation method of a coking coal-based high-rate graphite negative electrode material, wherein the preparation method comprises the following steps: step 1, crushing coking coal: crushing the coking coal into powder with the average particle size of 4-8 microns; step 2, molding: carrying out compression molding on the coking coal powder to become blocky coking coal, wherein the molding pressure is 2 MPa; step 3, roasting: roasting the blocky coking coal in a roasting furnace at the temperature of 1000 DEG C; step 4, secondary crushing: performing secondary crushing on the roasted product to obtain carbonized coking coal powder with the average particle size of 10-14 microns; and step 5, graphitizing: graphitizing the carbonized coking coal powder in an Acheson graphitizing furnace at the temperature of 3000 DEG C. According to the invention, the coking coal with a certain index is successively subjected to crushing, molding, roasting, secondary crushing, graphitization and other processes to prepare the graphite negative electrode material applied to a high-rate lithium ion battery; compared with an existing high-rate negative electrode material preparation method in the market, the method disclosed by the invention is lower in production cost, higher in yield and better in battery processing performance.
本发明提出一种焦煤基高倍率石墨负极材料的制备方法，包括以下步骤：步骤一、焦煤粉碎，将焦煤粉碎至平均粒度为4‑8μm的粉体；步骤二、成型，焦煤粉体经模压成型变为块体焦煤，成型压力为2MPa；步骤三、焙烧，块状焦煤在1000℃的焙烧炉中进行焙烧；步骤四、二次粉碎，焙烧品经过二次粉碎得到平均粒度为10‑14μm的碳化焦煤粉体；步骤五、石墨化，碳化焦煤粉体在3000℃的艾奇逊石墨化炉中进行石墨化。本发明将一定指标的焦煤先后经粉碎、成型、焙烧、二次粉碎、石墨化等工序，制得应用于高倍率锂离子电池的石墨负极材料；与市场现有的高倍率负极材料制备方法相比，本发明所示方法生产成本更低、产量更高、电池加工性能更好。
Preparation method of coking coal-based high-rate graphite negative electrode material
一种焦煤基高倍率石墨负极材料的制备方法
LI HAI (Autor:in) / YANG YINGCHANG (Autor:in) / HUANG WEI (Autor:in)
14.05.2021
Patent
Elektronische Ressource
Chinesisch
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