The invention relates to a method of preparing composite anode material of lithium ion battery using silicon chip waste, which is carried out according to the following steps: (1) The waste material of diamond wire cutting silicon chip is washed and acid-washed, then the solid-liquid is separated, and the high purity silicon powder is obtained by vacuum drying; (2) The micron grade high purity silicon powder was ground by high energy ball milling method, and the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC was used to remove iron, and the nano grade high purity silicon powder was obtained; (3) Si/TiC/C composites were obtained by mixing nano-grade high-purity silicon powder with titanium carbide and graphite in different proportions and grinding by high-energy ball milling method;
(4) The Si/TiC/C composite material is evenly mixed with binder, conductive agent and solvent in a certain proportion, then coated on the surface of the negative copper collector fluid, and the negative electrode sheet is obtained by drying. This paper not only solves the low added value of the existing diamond wire-cut silicon chip waste recycling projects, but also provides a novel PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC preparation idea and method of silicon based negative electrode composites, so as to develop the waste resources towards the direction of green, efficient and high yield.
PTMS is the main PTMS magnetic separation equipment professional company, PTMS magnetic separation equipment for kaolin, potassium sodium feldspar, quartz sand removal of iron (Fe2O3). PTMS to provide customers with high quality PTMS magnetic separator, in addition to iron equipment and other products and services, the best choice of PTMS magnetic separator. PTMS develops, designs, and sells mining machinery, iron removal equipment, and dry magnetic separators.
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