▎ 摘　　要

NOVELTY - The method involves sequentially adding carbon fiber, sodium bicarbonate particles and isopropyl alcohol to a ball milling tank. A graphene sheet layer is obtained by ball milling for 2-3 hours at a speed of 500-800 r/min at 20-30 degrees C. The graphene sheet layer is adhered and a micro-electrode is prepared. The electrode is extracted as the cathode and anode of a carbon-based strain power supply through a conductive film. The graphene sheet layer adhered to the polymer surface is deformed by stretching or bending a polymer thin sheet. The output current is generated by two electrodes. USE - Method of preparing carbon-based strain power supply for supplying power to energy field, information field and biomedical field. ADVANTAGE - The preparation process is simple and easy to repeat, while the energy consumption is saved. The prepared carbon-based strain power supply can provide comparatively large and stable voltage and current.