In this study, crystalline MoO₃ rods and amorphous MoO₃ microsheets were synthesized using a one‐step, large‐scale, and time‐ and energy‐efficient solution combustion synthesis method. When urea was used as a fuel, ultralong rod‐like crystalline MoO₃ with a length over 50 μm was synthesized. In the case of citric acid, an amorphous MoO₃ product with a porous microsheet structure was obtained. As anode materials for lithium‐ion batteries, the unique structure of amorphous MoO₃ sample has significant advantages including fast diffusion of lithium ion, providing a lot of active sites for lithium ion storage and stable structure. Thus, the amorphous MoO₃ sample exhibits greater electrochemical performance, a high capacity of 818 mAh g⁻¹ at 0.1 A g⁻¹ in the 100th cycle and 510 mAh g⁻¹ at 1 A g⁻¹ in the 300th cycle, than that of crystalline MoO₃ product. Moreover, this study provides guide for preparing other amorphous and crystalline transition‐metal oxides with a pure phase.

中文翻译：

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一锅溶液燃烧合成晶体和非晶态三氧化钼作为锂离子电池的阳极

在这项研究中，结晶的MoO ₃棒和无定形的MoO ₃微片是使用一步，大规模，省时和节能的固溶燃烧合成方法合成的。当尿素用作燃料时，合成了长度超过50μm的超长棒状晶体MoO ₃。在柠檬酸的情况下，获得具有多孔微片结构的无定形MoO ₃产物。作为锂离子电池的负极材料，非晶态MoO ₃样品的独特结构具有显着的优势，包括锂离子的快速扩散，为锂离子存储提供了大量的活性位点和稳定的结构。因此，非晶MoO ₃与结晶MoO ₃产物相比，样品显示出更高的电化学性能，在第100个循环中在0.1 A g ^-1下具有818 mAh g ^-1的高容量，在第300个循环中在1 A g ^-1下具有510 mAh g ^-1的高容量。此外，这项研究为制备其他具有纯相的无定形和结晶过渡金属氧化物提供了指导。