Huawei Technologies Co Ltd recently published a patent for “a hard carbon anode material, lithium-ion battery, and its preparation method and application”, with the publication number CN112645300A.
However, the patent abstract shows that the invention discloses a hard carbon anode material, a lithium-ion battery, and a preparation method and application thereof. The hard carbon anode material prepared by the invention is a typical amorphous carbon with a high pyrolysis yield. The lithium-ion battery prepared as an anode material has a high first reversible capacity, good efficiency, stable properties, and consistency.
PREPARATION METHOD:
- The carbon source precursor powder and additives undergo crosslinking reaction to obtain a modified carbon source precursor; the additives include cross-linking agents, modifiers, and dispersion aids.
- After the modified carbon source precursor is sequentially heat-treated, cooled, and mixed with a lithium-rich agent, a modified hard carbon precursor is prepared.
- The modified hard carbon precursor is vacuum carbonized to obtain the hard carbon negative electrode material.
|VIA|
