Research on Preparation Process of Graphene Oxide of Negative Electrode Materials

Graphene oxide (GO) is a highly stable and charge/discharge stable negative electrode material. When preparing GO using the Hummers method, GO prepared by KMn4 instead of NaNO3 was studied and analyzed. Spectral analysis, structural analysis, thermogravimetric analysis, and structural integrity analysis were conducted on GO prepared by KMn4. The experimental results showed that comparing GO prepared by KMn4 to traditional methods had little difference in terms of degrees of oxidation, the stable dispersion in water, and thermogravimetric analysis, but it has higher structural stability and fewer permanent defects compared to GO prepared by traditional method.