Introduction: the formal name of graphite oxide is graphite oxide or graphite acid, which is a compound composed of carbon, hydrogen and oxygen elements with variable mass ratio. Graphite oxide can be prepared by treating graphite with strong oxidant. Among the products obtained, the product with the highest degree of oxidation is a yellow solid with the ratio of carbon to oxygen between 2.1 and 2.9, and still retains the layered structure of graphite, but the structure becomes more complex。