| abstract |
The present invention provides an emulsified pitch-coated silicon carbon negative electrode material, which in mass percentage comprises 90%-95% of emulsified pitch, 1%-2% of nano-silicon powder, and 3%-9% of graphite. The emulsified asphalt-coated silicon carbon negative electrode material has the advantages of simple preparation process, readily available raw materials, convenient popularization and environmental friendliness, and the formed battery has excellent electrical performance, and the first discharge specific capacity can reach 1850mAh/g. The mixing uniformity of the three materials of asphalt, graphite and silicon is improved, and the cycle life of the battery is improved. |