Abstract Hollow CoMoO4 micro/nano-structures have received increasing attention owing to their outstanding performance for lithium-ion batteries (LIBs) applications. However, it is very challenging on the controllable synthesis of CoMoO4 with various micro/nano-structures by simply adjusting a certain synthesis condition. Herein, uniform hollow hydrangea-like CoMoO4 and hollow spherical CoMoO4 were synthesized through a pH-dependent solvothermal route. The hollow hydrangea-like CoMoO4 constructed by interwoven reticular 2D nanosheets was obtained under alkaline condition. While the spherical one composed of densely packed 0D nanoparticles was acquired under acidic condition. In addition, two different growth mechanisms of these two kinds of hierarchical CoMoO4 micro/nano-structures have also been proposed based on time-dependent experiments. When applied to the anodes for LIBs, as expected, both materials show excellent electrochemical performance. Particularly, the hollow hydrangea-like CoMoO4 electrode exhibits more outstanding electrochemical performance. Under 200 mA g−1, it delivers the first discharge specific capacity of 1596 mA h g−1 and retains a reversible capacity of 1014 mA h g−1 after cycling 50 times. Even under the large rate of 1000 mA g−1, it can still maintain a reversible capacity of 745 mA h g−1 after cycling 150 times.

中文翻译：

---

空心绣球状和空心球状 CoMoO4 微/纳米结构：pH 依赖性合成、形成机制和增强的锂存储性能

摘要 空心 CoMoO4 微/纳米结构因其在锂离子电池 (LIB) 应用中的出色性能而受到越来越多的关注。然而，通过简单地调整一定的合成条件来可控合成具有各种微/纳米结构的CoMoO4是非常具有挑战性的。在此，通过依赖 pH 值的溶剂热途径合成了均匀的空心绣球状 CoMoO4 和空心球形 CoMoO4。在碱性条件下获得了由交织的网状二维纳米片构成的空心绣球状CoMoO4。而在酸性条件下获得由密集堆积的 0D 纳米粒子组成的球形纳米粒子。此外，基于时间相关实验还提出了这两种分层 CoMoO4 微/纳米结构的两种不同生长机制。正如预期的那样，当应用于 LIB 的阳极时，两种材料都显示出优异的电化学性能。特别是中空绣球状CoMoO4电极表现出更优异的电化学性能。在200 mA g-1下，它提供1596 mAh g-1的首次放电比容量，并在循环50次后保持1014 mAh g-1的可逆容量。即使在1000 mA g-1的大倍率下，循环150次后仍能保持745 mA h g-1的可逆容量。它提供了 1596 mAh g-1 的首次放电比容量，并在循环 50 次后保持了 1014 mAh g-1 的可逆容量。即使在1000 mA g-1的大倍率下，循环150次后仍能保持745 mA h g-1的可逆容量。它提供了 1596 mAh g-1 的首次放电比容量，并在循环 50 次后保持了 1014 mAh g-1 的可逆容量。即使在1000 mA g-1的大倍率下，循环150次后仍能保持745 mA h g-1的可逆容量。