To meet the growing needs for high‐capacity and/or high‐power energy storage systems, designing high‐performance lithium storage materials beyond traditional graphite anodes are crucial for lithium‐ion batteries. Cobalt oxide (Co₃O₄) as a potential anode material is proved to own a high theoretical capacity, but its practical application is always limited by the conflict between performance comprehensiveness and synthesis scalability. Herein, a uniform hollow multishell Co₃O₄ with high specific surface area is designed via a simple and scalable route based on inhomogeneous contraction. The mean diameter of precursor and inner structure are influenced by hydrothermal reaction time. Owing to the unique structure, the material exhibits high electrochemical performance for lithium storage. The as‐prepared hollow sphere delivers a high specific capacity of 1012 mAh g⁻¹ at a current density of 445 mA g⁻¹ even after 200 cycles. Moreover, the synthetic strategy is readily extendable for accurate construction of other desired energy storage materials.

中文翻译：

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空心多壳Co3O4的可扩展构造以及缓解的界面重构，可有效存储锂

为了满足对大容量和/或大功率储能系统不断增长的需求，设计超越传统石墨阳极的高性能锂存储材料对于锂离子电池至关重要。氧化钴（Co ₃ O ₄）作为潜在的阳极材料已被证明具有较高的理论容量，但其实际应用始终受到性能全面性与合成可扩展性之间冲突的限制。在此，均匀的中空多壳Co ₃ O ₄通过基于不均匀收缩的简单且可扩展的路线设计具有高比表面积的材料。前驱体的平均直径和内部结构受水热反应时间的影响。由于其独特的结构，该材料在锂存储方面显示出很高的电化学性能。所制备的空心球即使在200次循环后仍能以445 mA g ^-1的电流密度提供1012 mAh g ^-1的高比容量。此外，合成策略易于扩展以精确构造其他所需的能量存储材料。