The active sites on oxygen electrocatalyst and the number of inherent active species are important factors affecting the performance of Zn-air battery. Constructing multiphase interfaces is an effective strategy to increase the number of active species for oxygen electrocatalysts. In this work, the number of intrinsic active species of spinel oxygen electrocatalyst was increased and its catalytic activity was enhanced by the synergistic action of bimetallic center three interfaces and heteroatom-doped carbon nanostructures. The resulting NiCo₂O₄/NCNTs/NiCo as catalyst exhibits superior activity toward ORR (E_1/2 = 0.83 V, J_L = −5.38 mA cm⁻²) and OER (E_j10 = 1.58 V). Further, the obtained catalyst work as a cathode assembles as Zn-air battery with a high open-circuit potential of 1.51 V and excellent cycle stability (586 h). Theoretical results indicate that the desorption of *OH species is the rate-determining step for ORR, the multiphase interfaces in the NiCo₂O₄/NCNTs/NiCo will provide additional electrons due to the upward shift of antibonding orbitals relative to the Fermi level. Consequently, it boosts the oxygen adsorption and charge transfer and accelerate the reaction kinetics. This work emphasizes the synergistic effect between multiphase interfaces in transition metal composite catalysts and opens up a promising way for the preparation of efficient and stable transition metal electrocatalysts.

氧电催化剂上的活性位和固有活性种类的数量是影响锌空气电池性能的重要因素。构造多相界面是增加氧电催化剂活性物质数量的有效策略。在这项工作中，尖晶石氧电催化剂的固有活性物种数量增加，并且通过双金属中心三个界面和杂原子掺杂的碳纳米结构的协同作用增强了其催化活性。所得的作为催化剂的NiCo ₂ O ₄ / NCNTs / NiCo对ORR（E _1/2  = 0.83 V，J _L  = -5.38 mA cm ^-2）和OER（E _j10 = 1.58 V）。此外，获得的作为阴极的催化剂组装成具有1.51V的高开路电势和优异的循环稳定性（586h）的Zn-空气电池。理论结果表明，* OH种类的解吸是ORR的速率决定步骤，由于反键轨道相对于费米能级的向上移动，NiCo ₂ O ₄ / NCNTs / NiCo中的多相界面将提供额外的电子。因此，它促进了氧的吸附和电荷转移，并加快了反应动力学。这项工作强调了过渡金属复合催化剂中多相界面之间的协同作用，为制备高效，稳定的过渡金属电催化剂开辟了有希望的途径。