MANUFACTURING METHOD OF NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY
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United States of America Patent
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May 13, 2021
app pub date -
Jan 19, 2020
filing date -
Nov 13, 2019
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Abstract
The invention provides a manufacturing method of a negative electrode material for a secondary battery. The manufacturing method includes following steps. A silicon-containing material is provided. The alkaline treatment is performed on the silicon containing material by placing the silicon containing material into an alkaline solution to obtain a modified silicon material. A peak intensity of the silicon-containing material at 3600 cm−1 to 3000 cm−1 in the spectrum by Fourier transform infrared spectroscopy (FTIR) is I0, and a peak intensity of the modified silicon material at 3600 cm−1 to 3000 cm−1 in the spectrum by FTIR is I1, wherein 0.9
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