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PREPARING METHOD OF GRAPHENE PAPER HAVING SPORADICALLY INCREASED INTERLAYER DISTANCE AND THE NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY USING THE SAME
PREPARING METHOD OF GRAPHENE PAPER HAVING SPORADICALLY INCREASED INTERLAYER DISTANCE AND THE NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY USING THE SAME
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机译：具有相同距离的层间距离增大和锂离子电池负极的石墨纸的制备方法
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摘要
The present invention relates to graphene paper with a sporadically increased interlayer distance and a negative electrode for a lithium ion battery using the same. A manufacturing method for the graphene paper of the present invention comprises: a step of making few-layer graphene react with alcohol under the presence of an acid (a); a step of filtering graphene with sporadically increased interlayer distance after neutralizing the reactant (b); a step of dispersing the filtered graphene in a solvent (c): and a step of filtering the graphene dispersed in the solvent (d). The graphene paper with a sporadically increased interlayer distance of the present invention is able to be used as a high capacity negative electrode material in a lithium ion battery since the graphene is able to store lithium ions but an electrolyte is weak in penetration and is able to manufacture a high capacity lithium ion battery by stably maintaining lithium storage capacity in repetitive charging and discharging when the graphene paper is used.
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