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Novel graphitization method of lithium ion battery graphite negative electrode material
The invention discloses a novel graphitization method for a graphite negative electrode material of a lithium ion battery. The novel graphitization method comprises the following steps: preparing a graphite negative electrode precursor into a blocky precursor; a plurality of blocky precursors are placed in a conductive section area in a smelting furnace from the furnace head to the furnace tail of the smelting furnace; a resistance material is added between the adjacent blocky precursors to serve as a drainage layer, and a heat preservation material is laid on the periphery of the conductive section area to form a heat preservation layer; power is supplied to the smelting furnace for heating, so that the blocky precursor is subjected to graphitization transformation; and after graphitization transformation, cooling and discharging. After the graphite negative electrode precursor is pressed and formed, the distance between material particles is small, the density is high, heat conduction is fast, the charging amount is high, the heat preservation effect is good, the performance of a graphitized product is high, the cost is only half of the cost of the same industry, and the method is a novel energy-saving, low-carbon, efficient and low-cost graphitization method.
本发明公开了一种锂离子电池石墨负极材料的新型石墨化方法，包括以下步骤：将石墨负极前驱体制成块状前驱体；将若干个所述块状前驱体沿着冶炼炉的炉头至炉尾摆放于冶炼炉中的导电截面区域内；在相邻块状前驱体之间填加电阻料作为引流层，并在导电截面区域外围铺设保温料形成保温层；对冶炼炉送电升温以使所述块状前驱体进行石墨化转变；石墨化转变之后，冷却出炉。本发明中将石墨负极前驱体压制成型后，材料颗粒间的距离小，致密度高，热传导快，装炉量高，保温效果好，石墨化的产品性能较高，且成本仅为同行业成本的一半，是一种新型的节能、低碳、高效、低成本的石墨化方法。
Novel graphitization method of lithium ion battery graphite negative electrode material
The invention discloses a novel graphitization method for a graphite negative electrode material of a lithium ion battery. The novel graphitization method comprises the following steps: preparing a graphite negative electrode precursor into a blocky precursor; a plurality of blocky precursors are placed in a conductive section area in a smelting furnace from the furnace head to the furnace tail of the smelting furnace; a resistance material is added between the adjacent blocky precursors to serve as a drainage layer, and a heat preservation material is laid on the periphery of the conductive section area to form a heat preservation layer; power is supplied to the smelting furnace for heating, so that the blocky precursor is subjected to graphitization transformation; and after graphitization transformation, cooling and discharging. After the graphite negative electrode precursor is pressed and formed, the distance between material particles is small, the density is high, heat conduction is fast, the charging amount is high, the heat preservation effect is good, the performance of a graphitized product is high, the cost is only half of the cost of the same industry, and the method is a novel energy-saving, low-carbon, efficient and low-cost graphitization method.
本发明公开了一种锂离子电池石墨负极材料的新型石墨化方法，包括以下步骤：将石墨负极前驱体制成块状前驱体；将若干个所述块状前驱体沿着冶炼炉的炉头至炉尾摆放于冶炼炉中的导电截面区域内；在相邻块状前驱体之间填加电阻料作为引流层，并在导电截面区域外围铺设保温料形成保温层；对冶炼炉送电升温以使所述块状前驱体进行石墨化转变；石墨化转变之后，冷却出炉。本发明中将石墨负极前驱体压制成型后，材料颗粒间的距离小，致密度高，热传导快，装炉量高，保温效果好，石墨化的产品性能较高，且成本仅为同行业成本的一半，是一种新型的节能、低碳、高效、低成本的石墨化方法。
Novel graphitization method of lithium ion battery graphite negative electrode material
一种锂离子电池石墨负极材料的新型石墨化方法
LIU CHENGQUAN (Autor:in) / WANG JINZHI (Autor:in) / LIU JINTING (Autor:in) / QI XIN (Autor:in)
10.05.2022
Patent
Elektronische Ressource
Chinesisch
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