Layered Li₂MoO₃ (LMS) is a promising building block for constructing high capacity positive electrode materials for lithium-ion battery applications. But the samples without a well-controlled morphology restrict the improvement of the performance. By using the MoO₂ microsphere as a self-template, Li₂MoO₃ materials with a hierarchical micro-spherical morphology were prepared successfully. The structural details were analyzed by XRD, SEM, TEM, and EDS techniques, while N₂ adsorption and desorption isotherm confirmed that Li₂MoO₃ microspheres have a mesoporous structure with a surface area ~ 7.4 times larger than bulk Li₂MoO₃. Therefore, LMO microsphere exhibits an excellent electrochemical performance. It can deliver the capacities of 246.91, 184.75, 160.10, 127.57, 99.61, and 75.63 mA h g⁻¹ at the current densities of 34, 100, 170, 340, 680, and 1000 mA g⁻¹, which are larger than the values of the bulk samples at the same rates. Our experiments also confirmed that the special morphology is helpful for the reduction of the charge transfer resistance and the improvement of the reaction activity and reversibility of the materials.

中文翻译：

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具有优异电化学性能的Li 2 MoO 3微球作为锂离子电池的正极材料

层状Li ₂ MoO ₃（LMS）是一种有前途的构建基块，可用于构造锂离子电池应用的高容量正极材料。但是没有良好控制的形态的样品会限制性能的提高。以MoO ₂微球为模板，成功制备了具有分层微球形貌的Li ₂ MoO ₃材料。通过XRD，SEM，TEM和EDS技术对结构细节进行了分析，而N ₂吸附和解吸等温线证实Li ₂ MoO ₃微球具有介孔结构，其表面积约为本体Li _2的7.4倍。MoO ₃。因此，LMO微球表现出优异的电化学性能。在电流密度分别为34、100、170、340、680和1000 mA g ^-1时，它可以提供246.91、184.75、160.10、127.57、99.61和75.63 mA h g ^-1的容量，该值大于该值相同速率的大量样品。我们的实验还证实，特殊的形态有助于降低电荷转移阻力，并改善反应活性和材料的可逆性。