Preparation method and application of expanded graphene material using popcorn machine

The invention discloses a preparation method and application of an expanded graphene material by using a popcorn machine, and relates to the technical field of graphite materials, the preparation method comprises the following steps: S1, adding waste graphite in a negative electrode of a waste lithi...

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Hauptverfasser: REN PING, WANG YUNSHUO, LYU XIAODONG, YANG XIAOYANG, DU WEI
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a preparation method and application of an expanded graphene material by using a popcorn machine, and relates to the technical field of graphite materials, the preparation method comprises the following steps: S1, adding waste graphite in a negative electrode of a waste lithium battery into deionized water, and stirring to obtain a first turbid liquid; s2, performing hydrothermal intercalation on the first turbid liquid in the S1 to obtain a second turbid liquid; s3, washing the second turbid liquid obtained in S2 for multiple times by using deionized water and ethanol in sequence, and drying in a vacuum drying oven to obtain a dried product; and S4, putting the dried product in S3 into a popcorn machine for instantaneous expansion to obtain the expanded graphene material. By adopting the steps, the expanded graphite material is obtained by sequentially adopting a hydrothermal intercalation method and a method that pressure disappears quickly and the expanded graphite material expands