EXFOLIATED GRAPHITE AND MANUFACTURING METHOD THEREFOR

    公开(公告)号:US20220119265A1

    公开(公告)日:2022-04-21

    申请号:US17429744

    申请日:2020-02-26

    Abstract: Provided are exfoliated graphite that rarely folds, rarely curls, and rarely causes corrosion of an electrode when used as the electrode material, and a method for manufacturing the exfoliated graphite. Exfoliated graphite being graphene or a laminate of graphene sheets, the exfoliated graphite having a ratio 2 D/G of 0.5 or more and 5.0 or less, the ratio 2 D/G being a peak area ratio of a 2 D band to a G band in a Raman. spectrum measured. using Raman spectroscopy, and a halogen content of 1,000 ppm or less.

    NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERIES, NEGATIVE ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

    公开(公告)号:US20220344635A1

    公开(公告)日:2022-10-27

    申请号:US17762466

    申请日:2020-09-16

    Abstract: Provided is a negative electrode material for a secondary battery capable of improving cycle characteristics due to charge and discharge of the secondary battery. A negative electrode material for a secondary battery includes a negative electrode active material containing a particle 1 and a first carbon material capable of occluding and releasing alkali metal ions or alkaline earth metal ions; and a conductive aid containing a second carbon material different from the first carbon material, in which the particle 1 has a mother particle 2 including a metal or a metal compound, a covering layer 3 covering at least a portion of a surface 2a of the mother particle 2 and including amorphous carbon, and a conductive material 4 attached directly or indirectly to the surface 2a of the mother particle 2 and having conductivity higher than that of the amorphous carbon.

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