Ni-Co-based zeolitic imidazolate framework (Ni/Co-ZIF-67) derived NiCo₂Se₄/N-doped porous carbon (NiCo₂Se₄@NPC) nanocubes are used as anode materials of sodium ion batteries (SIBs). The nano size and porous structure of NiCo₂Se₄ nanocubes accelerate reaction kinetics and relieve volume expansion, and the porous carbon increases the material’s electronic conductivity. Moreover, the electrochemical process of the NiCo₂Se₄@NPC electrode materials is mainly dominated by pseudocapacitive behaviors according to the kinetic studies by cyclic voltammetry. Consequently, NiCo₂Se₄@NPC nanocubes deliver a high discharge capacitry of 462.1 mAh g⁻¹ at 0.1 A g⁻¹ after 70 cycles in SIBs. Even at a high current density of 2 A g^-1, the discharge capacity of NiCo₂Se₄@NPC nanocubes can reach 372 mAh g^-1. This study provides a reliable basis for the preparation of bimetallic selenide and helps to promote the development of bimetallic selenide as anode in SIBs.

基于Ni-Co的沸石咪唑酸盐骨架（Ni / Co-ZIF-67）衍生的NiCo ₂ Se ₄ / N掺杂多孔碳（NiCo ₂ Se ₄ @NPC）纳米立方体被用作钠离子电池（SIB）的负极材料。NiCo ₂ Se ₄纳米立方体的纳米尺寸和多孔结构可加速反应动力学并缓解体积膨胀，而多孔碳可增加材料的电子导电性。此外，根据循环伏安法的动力学研究，NiCo ₂ Se ₄ @NPC电极材料的电化学过程主要由拟电容行为决定。因此，NiCo ₂ Se ₄在SIB中经过70次循环后，@ NPC纳米立方体在0.1 A g ^-1下可提供462.1 mAh g ^-1的高放电容量。即使在2 A g ^-1的高电流密度下，NiCo ₂ Se ₄ @NPC纳米立方体的放电容量也可以达到372 mAh g ^-1。该研究为双金属硒化物的制备提供了可靠的依据，并有助于促进双金属硒化物作为SIBs阳极的发展。