46results about How to "Preparation method simple green" patented technology

The invention relates to a boron / nitrogen co-doped gelatin-based two-dimensional carbon plate and a preparation method and application thereof. The preparation method comprises the following steps of: dissolving and mixing gelatin and boric acid which serve as raw materials, carrying out evaporation-induced assembly, co-pyrolysis and boiling water backflow to prepare the two-dimensional carbon plate; mixing the boron / nitrogen co-doped two-dimensional carbon plate, carbon black and polytetrafluoroethylene according to a proportion to prepare a carbon pole piece serving as a supercapacitor electrode piece; or mixing with the carbon black and polyvinylidene fluoride according to a proportion to prepare a slurry serving as an electrode piece of a button lithium ion battery. The obtained carbon plate has high content of nitrogen and boron, pore size distribution is concentrated, and the carbon plate is large in size and thin in thickness; such carbon plate has a series of advantages of high specific capacitance, high rate performance and the like when serving as the electrode materials of a supercapacitor and the lithium ion battery; and moreover, the electrode has high cycling stability. The preparation method has the advantages of simplicity and greenness in process, short consumed time and the like, and the device is simple and available.