Transition metal selenides with low pollution, high chemical stability and high theoretical capacity are regarded as the most prospective candidate materials for sodium ions storage. However, its poor conductivity, drastic volume change and sluggish diffusion kinetics hinder potential commercialized practical applications. Herein, multi-yolk ZnSe/2(CoSe₂) heterostructures confined in N-doped carbon (NC) hexahedron have been prepared via a facile two-step method. Benefiting from the novel multi-yolk-shell structure with heterojunction interfaces, ZnSe/2(CoSe₂)@NC electrodes display superior sodium storage performance with superior cycling performance (specific capacity of 552.1 mAh g⁻¹ over 100 cycles at 0.1 A g⁻¹) and outstanding rate performance (specific capacity of 528.6 mAh g⁻¹ at 5 A g⁻¹) and long-term cycling stability. Our designed multi-yolk-shell ZnSe/2(CoSe₂)@NC heterostructures can be envisaged to accelerate progress towards advanced alkali metal ion batteries with vast implications for commercialized high-performance energy-storage applications.

低污染，高化学稳定性和高理论容量的过渡金属硒化物被认为是储存钠离子的最有希望的候选材料。然而，其差的电导率，急剧的体积变化和缓慢的扩散动力学阻碍了潜在的商业化实际应用。在此，已经通过简便的两步法制备了限制在N掺杂碳（NC）六面体中的多卵黄ZnSe / 2（CoSe ₂）异质结构。由该新型多蛋黄-壳结构，异质结界面，硒化锌/ 2受益（COSE ₂具有优异的循环性能（的552.1毫安g的比容量）@NC电极显示优异的储存性能钠^-1超过100个循环的0.1 A克^{- 1个}）和出色的速率性能（的528.6毫安g的比容量^-1在5 A G ^-1）和长期循环稳定性。可以设想我们设计的多卵壳ZnSe / 2（CoSe ₂）@NC异质结构，以加速向高级碱金属离子电池的发展，这对商业化的高性能储能应用具有重大意义。