Preparation method and application of bubble phase synthesized carbon electrode composite material

The invention discloses a preparation method and application of a membrane bubble phase synthesized carbon electrode composite material, and the specific preparation steps are as follows: S1, lettuce leaves are stirred, juiced and subjected to membrane treatment, 100 ml of lettuce leaf juice and 15 ml of a metal ion raw material are stirred at room temperature for 1 h, the rotating speed is set to be 800 r/min, and a precursor solution of carbon is obtained; s2, shaking up hexadecyl trimethyl ammonium bromide and fatty alcohol polyoxyethylene ether sodium sulfate according to the volume ratio of (1.0-1.5): (1.0-2.0) in a 25-40% ethanol solvent, standing after constant-temperature water bath, and compounding to form a bubble phase solution; and S3, adding the precursor solution of carbon into the bubble phase solution according to a volume ratio, performing ultrasonic oscillation, aging at room temperature for 10-12 hours, drying at 80-100 DEG C, roasting under an oxygen isolation condition, and grinding to ob