Application of common dye rhodamine B as organic cathode material of lithium ion battery

The invention discloses application of common dye rhodamine B as an organic cathode material of a lithium ion battery, and belongs to the field of electrode materials. Rhodamine B is different from atraditional lithium ion battery cathode material which is an inorganic substance, the material serves as an organic matter and has the advantages which are not possessed by the traditional inorganic material, and specifically, the organic cathode material has the advantages of renewable resources, environmental friendliness, convenience in battery recovery, rich raw materials, low cost, large specific capacity and the like. The number of the large discharge platforms of the cathode material is mainly two, and the large discharge platforms are mainly 2.4 V and 2.0 V, particularly, the large discharge platforms can be more conveniently applied to special equipment which needs a high voltage to excite the constant voltage to operate. Besides, rhodamine B belongs to a dye, the battery cathodematerial can also be appli