▎ 摘　　要

Waste batteries (AA and AAA models) pose a major concern in waste disposal, and the graphite electrodes in them are also sources for graphene production. Here, solution-based exfoliation is followed to exfoliate graphene using various electrolytes where we observe sulfate-based electrolytes to be more efficient. Solution-based graphene, on Raman spectroscopic analysis, confirms a monolayer, highly conductive graphene (G1) of size similar to 24 nm with fewer defects and low oxidation levels. This graphene (G1) is converted to powder form and characterized using UV spectroscopy, FTIR, XRD, FESEM-EDS. Among the as-prepared graphene powders, a multi-layered, amorphous graphene powder (GP2) having a d-spacing of 3.7 angstrom with 80% carbon was the pre-eminent sample reported. GP2 with large graphene films finds its applications in a variety of fields.