Preparation method of high-performance Si/C negative electrode material
A negative electrode material and high-performance technology, which is applied in the field of preparation of high-performance Si/C negative electrode materials, can solve the problems of waste of high-quality C resources, complicated preparation methods, and high cost, and achieve excellent electrochemical performance, simplified preparation process, and low cost Effect
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[0037] Example 1:
[0038] A method for preparing high-performance Si / C negative electrode material includes the following steps:
[0039] (1) The rice husk obtained from the rice factory is removed, washed and dried to obtain clean rice husk raw materials;
[0040] (2) Weigh 100g of clean rice husk and place it in a constant temperature zone in a horizontal tube furnace. 2 Atmosphere (N 2 The flow rate of 100mL / min) is increased to 850℃ at 5℃ / min, and the N 2 Atmosphere switch to CO 2 Atmosphere (CO 2 Flow 200mL / min), heat treatment at constant temperature for 2h, and then at N 2 Naturally cool to below 100℃ in the atmosphere;
[0041] (3) Weigh 2.86g NaCl, AlCl 3 10.94g, grind and mix the two in a dry environment, and then weigh 3.6g of the heat-treated rice husk product and 1.0g of aluminum powder (100-200 mesh), add them to the wear-resistant steel tank, and add the wear-resistant steel Ball 230g, seal the lid of the ball mill tank, open the inlet valve and outlet valve on the tan...
Example Embodiment
[0046] Example 2:
[0047] A method for preparing high-performance Si / C negative electrode material includes the following steps:
[0048] (1) Remove impurities, wash and dry the obtained rice husk;
[0049] (2) Weigh 100g of clean rice husk and place it in a constant temperature zone in a horizontal tube furnace. 2 Atmosphere (N 2 The flow rate of 150mL / min) is increased to 950℃ at 10℃ / min, and the N 2 Atmosphere switch to CO 2 Atmosphere (CO 2 Flow rate of 600mL / min), constant temperature heat treatment for 3h, and then in N 2 Naturally cool to below 100℃ in the atmosphere;
[0050] (3) Weigh 4.51g of NaCl, AlCl 3 15.09g, grind and mix the two in a dry environment, then weigh 4.20g of the heat-treated rice husk product and 2.33g of magnesium powder (100-200 mesh), add them to the wear-resistant steel tank, and add the wear-resistant steel Ball 340g, seal the lid of the ball mill tank, open the inlet valve and outlet valve on the lid, flush the raw materials in the tank with Ar gas t...
Example Embodiment
[0054] Example 3:
[0055] A method for preparing high-performance Si / C negative electrode material includes the following steps:
[0056] (1) Remove impurities, wash and dry the rice husk raw materials;
[0057] (2) Weigh 100g of clean rice husk and place it in a constant temperature zone in a horizontal tube furnace. 2 Atmosphere (N 2 The flow rate of 150mL / min) is increased to 900℃ at 10℃ / min, and the N 2 Atmosphere switch to CO 2 Atmosphere (CO 2 Flow rate 400mL / min), heat treatment at constant temperature for 2h, then in N 2 Naturally cool to below 100℃ in the atmosphere;
[0058] (3) Weigh 4.93g of NaCl, AlCl 3 15.20g, grind and mix the two in a dry environment, and then weigh 4.5g of the heat-treated rice husk product and 1.25g of aluminum powder (100-200 mesh), add them to the wear-resistant steel tank, and add the wear-resistant steel Ball 365g, seal the lid of the ball mill tank, open the inlet valve and outlet valve on the tank lid, flush the raw materials in the tank with ...
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