Li-oxygen batteries (LOBs) are considered as one of the most promising energy storage devices due to their superior energy density. However, the questions of large overpotential and poor cycling stability caused by sluggish oxygen reaction kinetics are remain. Here, we propose that constructing heterostructured nanomaterials with high conductivity is an effective way to enhance the eletrocatalytic activity in LOBs. The core-shell [email protected]₄S heterostructures decorated on the porous carbon matrix are successfully fabricated by adopting hypo (Na₂S₂O₃·5H₂O) as a sulfidation reactant in a simple method, which is used as an oxygen cathode for LOBs for the first time. The hierarchical regular pore structure in [email protected]₄S–C with a high surface area offers sufficient Li₂O₂ accommodations, which can facilitate a higher capacity and achieving a longer cycle life. The introduction of the Pd₄S shell greatly boosts decomposition of Li₂O₂, which effectively decreases the overpotentials, and contributes to the outstanding cycling stability of [email protected]₄S–C electrode (176 cycles at a current density of 500 mA g⁻¹). This novel heterostructure fabrication method highlights the importance of efficient O₂-electrode designs and provides a facile way to optimize the cathode materials for LOBs.

锂氧电池（LOB）由于其卓越的能量密度而被认为是最有前途的储能设备之一。然而，仍然存在由缓慢的氧气反应动力学引起的过大电势和较差的循环稳定性的问题。在这里，我们建议构建具有高电导率的异质结构纳米材料是增强LOBs电催化活性的有效方法。采用次氯酸钠（Na ₂ S ₂ O ₃ ·5H _2）成功制备了装饰在多孔碳基体上的核-壳[电子邮件保护] ₄ S异质结构。O）以简单的方法用作硫化反应物，首次用作LOB的氧阴极。[电子邮件保护的] ₄ S中具有较高表面积的分层规则孔结构可提供足够的Li ₂ O ₂适应性，这可促进更高的容量并实现更长的循环寿命。Pd ₄ S壳层的引入极大地促进了Li ₂ O _2的分解，有效地降低了过电势，并为[受电子邮件保护的] ₄ S–C电极（在电流密度为500 mA时为176个循环）提供了出色的循环稳定性。g ^-1）。这种新颖的异质结构制造方法突出了有效的O ₂电极设计的重要性，并提供了一种简便的方法来优化LOB的阴极材料。