Polycarbonate-based polyurethane (PCPU) was prepared using polycarbonate (PC) and 4,4-dicyclohexylmethane diisocyanate (HMDI) as the main raw materials. Fourier transform infrared spectroscopy (FT-IR), tensile machines, and simultaneous thermal analyzers were used to characterize the structural, mechanical, and thermal stability of the synthesized polyurethanes. The electrochemical stability window, ac impedance, rate and cycling performance of the cells were tested. Compared with the traditional PVDF binder, the electrode prepared with PCPU binder has a higher peel strength of 0.21 N/cm; the assembled SS/PCPU/Li half cell does not occur significant electrochemical oxidation decomposition within the voltage range of 0 to 5V. The battery fabricated by the cathode with the mass ratio of LiFePO4: SP: PCPU = 60:20:20 showed the best comprehensive performance with the discharge capacity of 143 mAh g-1 at 1C at 60? C，the capacity retention reached 97 % at 0.2C after 50 cycles, which show the excellent electrochemical performance.