Promoting the Li₂O₂ particles formation in the electrolyte by soluble catalysts could achieve high capacities for Li–O₂ cell. However, side reactions between the soluble catalysts and lithium metal anode and more importantly, the deposition of the solid Li₂O₂ particle on which side (lithium anode or oxygen cathode) is inevitable for the solution phase discharge process in Li–O₂ batteries, leading to the obvious capacity decay. Here we design and create a partial soluble metal nitroxides frameworks (MNOFs) to promote the “marriage” between the soluble and solid catalysts to overcome the most stubborn of these challenges. Taking advantage of the partial soluble property in the electrolyte, the prepared MNOFs can be simultaneously applied as the soluble and solid catalysts. MNOFs dissolving balance between electrolyte and cathode could construct a bridge between the electrolyte and cathode, which can not only suppress the corrosion reactions on Li anode, but also target discharge products deposition on the cathode. A 1Ah Li–O₂ cell with a high areal specific capacity of 40 mA h cm^-2 was demonstrated under a relatively low overpotential (∼ 0.6 V). By ideally bridging the soluble and solid catalyst, the reversibility is significantly improved.

通过可溶性催化剂促进电解质中Li ₂ O ₂颗粒的形成可以实现Li–O ₂电池的高容量。但是，可溶性催化剂与锂金属阳极之间的副反应，更重要的是，对于Li–O _2中的溶液相放电过程，不可避免要在其侧面（锂阳极或氧阴极）上沉积固体Li ₂ O ₂颗粒电池，导致明显的容量衰减。在这里，我们设计并创建了部分可溶性金属氮氧化物骨架（MNOF），以促进可溶性催化剂与固体催化剂之间的“联姻”，从而克服了这些难题中最顽固的问题。利用在电解质中的部分可溶性质，制备的MNOF可同时用作可溶和固体催化剂。溶解电解质和阴极之间的平衡的MNOF可以在电解质和阴极之间建立桥梁，这不仅可以抑制Li阳极上的腐蚀反应，而且可以将放电产物沉积在阴极上。1Ah Li–O ₂电池，具有40 mA h cm ^-2的高单位面积比容量在相对低的过电位（〜0.6 V）下进行了演示。通过理想地桥接可溶和固体催化剂，可逆性得到显着改善。