Replacing Li₂O₂ with LiO₂ as the discharge product is a very promising strategy to tackle the problems of high overpotential (~ 1.5 V), inferior rate capability and short cycle life in the current Li-O₂ batteries based on Li₂O₂. But it's very difficult to control LiO₂ due to its thermodynamic instability. Herein, we have successfully built a facile rechargeable Li-O₂ battery based on the formation and decomposition of amorphous LiO₂ with an ultralow overpotential (~ 0.3 V), long cycle life and high rate capability under the catalysis of 3D-architectured Pd-rGO. In-situ Raman spectrum, linear sweep voltammetry, UV–vis measurements and SAED (Selected Area Electron Diffraction) all have identified the amorphous LiO₂-based electrochemical process. Amorphous LiO₂ shows a lower oxidation potential and a faster ionic conductivity contributing to the excellent electrochemical performances and the mitigation of undesirable side reactions. This study opens a new horizon to solve the intrinsic problems of the current Li-O₂ batteries.

用LiO ₂作为放电产物代替Li ₂ O ₂是解决基于Li ₂ O的现有Li-O ₂电池中高电势（〜1.5 V），速率能力差和循环寿命短的问题的非常有前途的策略。₂。但是由于LiO ₂的热力学不稳定，很难控制。在此，我们基于无定形LiO ₂的形成和分解成功地构建了一种易用的可充电Li-O ₂电池。在3D架构Pd-rGO的催化下，具有超低的超电势（〜0.3 V），长循环寿命和高倍率功能。原位拉曼光谱，线性扫描伏安法，紫外可见测量和SAED（选定区域电子衍射）都已经确定了基于非晶LiO ₂的电化学过程。非晶态LiO ₂显示出较低的氧化电位和较快的离子电导率，这有助于出色的电化学性能和减轻不良的副反应。这项研究为解决当前Li-O ₂电池的内在问题开辟了新的视野。