▎ 摘　　要

Poly(2,2,6,6-tetramethylpiperidin-1-oxyl-4-yl methacrylate) (PTMA) is a typical organic battery material containing nitrogen and oxygen radicals. The grafting of PTMA onto graphene oxide to obtain composite cathode material poly(2,2,6,6-tetramethylpiperidin-1-oxyl-4-yl methacrylate)-Graphene Oxide (PTMA-GO) via click chemistry is reported. The method of preparing PTMA-GO is completed at room temperature, which can retain the oxygen-containing functional groups on the surface of graphene oxide, and the process is simple and easy to conduct. The composite materials are characterized by infrared, X-ray diffraction, thermogravimetry, and electron paramagnetic resonance. The cathode material is assembled in a button battery to measure its cyclic voltammogram, electrochemical impedance spectroscopy, and charge and discharge capacity cycles. It is found that the PTMA-GO electrode is twice as conductive as the PTMA electrode alone. The specific capacity of the PTMA-GO electrode is nearly 2.3 times higher than that of the PTMA electrode after 300 charge-discharge cycles. This represents an important reference value for the development of organic batteries, especially for the research of nitroxide radical polymer electrode materials.