Selenium-based cathodes for sodium-ion batteries have attracted considerable attention due to their high electronic conductivity and volumetric capacity compared to sulfur-based cathodes. However, the use of sodium-selenium batteries has been hindered due to the low selenium reaction activity towards sodium, rapid capacity fading caused by the shuttle effect of polyselenides, and the formation of sodium dendrites on the Na anodes. Herein, starting from the nitrogen and oxygen-containing ligands, two precursors of Ni&Zn-MOF and Zn-MOF were used to fabricate the cathode and anode, respectively. A N,O-codoped porous carbon host decorated with well-dispersed Ni single-atom catalyst was derived from the Ni&Zn-MOF for Se storage. When applied as a cathode in Na-Se batteries, this composite accelerated the reaction kinetics of Se and Na⁺, and at the same time weakened the Se-Se bond owing to its high adsorption to the Se₈ ring, which resulted in a significant improvement of the cycle stability. Meanwhile, a dendrite-free anode was realized by using Zn-MOF derived N,O-codoped porous carbon host, which showed a strong sodiophilic ability for Na metal. As a result, the Na-Se battery employing these two composites as the cathode and anode showed an excellent cycle stability and improved safety.

与硫基正极相比，用于钠离子电池的硒基正极由于具有较高的电子电导率和体积容量而引起了广泛关注。然而，由于硒对钠的反应活性低、多硒化物的穿梭效应导致容量快速衰减以及钠负极上钠枝晶的形成，钠硒电池的使用受到了阻碍。在此，从含氮和含氧配体开始，分别使用 Ni&Zn-MOF 和 Zn-MOF 两种前体制备正极和负极。AN,O-共掺杂多孔碳主体装饰有良好分散的 Ni 单原子催化剂，来源于用于储硒的 Ni&Zn-MOF。当用作钠硒电池的正极时，这种复合材料加速了硒和钠的反应动力学⁺，同时由于其对Se ₈环的高度吸附而削弱了Se-Se键，从而显着提高了循环稳定性。同时，使用Zn-MOF衍生的N，O共掺杂多孔碳主体实现了无枝晶阳极，对金属钠表现出很强的亲钠能力。因此，采用这两种复合材料作为正极和负极的钠硒电池表现出优异的循环稳定性和更高的安全性。