Large overpotential and poor cyclability are the main constraints for lithium-oxygen batteries (LOBs), which are usually related to the slow decomposition of the discharge product during oxygen evolution reaction (OER) of charging process. In this paper, a novel method of pulse current charging is developed for solving these problems. The results show, compared with the normal constant current samples, when duty cycle is 50% and frequency is 1 Hz and, the overpotential decreases up to 25% and the cycle life improves more than 4 times. During charging process, pulse current can reduce the concentration polarization and promote the decomposition of Li₂O₂, and increase the reaction kinetics of OER process, leading to the reduction of overpotential and improvement of electrochemical performance.

过大的电势和较差的可循环性是锂氧电池（LOB）的主要限制因素，通常与充电过程中的放氧反应（OER）过程中放电产物的缓慢分解有关。在本文中，开发了一种新颖的脉冲电流充电方法来解决这些问题。结果表明，与正常恒流样品相比，当占空比为50％且频率为1 Hz时，过电势降低高达25％，并且循环寿命提高4倍以上。在充电过程中，脉冲电流可以降低浓度极化并促进Li ₂ O ₂的分解，并提高了OER工艺的反应动力学，从而降低了过电势并改善了电化学性能。