Herein, we reported the composite structure of LiMnO₂ and Li₂MnO₃ as a low-cost and environmentally benign cathode material. This composite with the main phase of LiMnO₂ (90%) was synthesized by hydrothermal method at 220°C from LiOH and Mn(CH₃COO)₂ precursors. The obtained nanosized LiMnO₂-LiMnO₃ cathode material exhibits a high capacity of 265 mAh g^-1 at C/10. The incorporation of Li₂MnO₃ into the LiMnO₂ phase could stabilize the structure, leading to the improved cycle stability of the cathode. The capacity retention of the cathode was 93% after 80 cycles at C/2. Our results facilitate a potential strategy for developing high-performance cathode materials based on the Li-Mn-O system.

中文翻译：

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Li2MnO3 稳定化 LiMnO2 作为锂离子电池正极材料的水热合成

在此，我们报道了 LiMnO ₂和 Li ₂ MnO ₃的复合结构作为一种低成本且环境友好的正极材料。这种具有 LiMnO ₂ (90%)主相的复合材料是通过水热法在 220°C 下由 LiOH 和 Mn(CH ₃ COO) ₂前体合成的。获得的纳米级LiMnO ₂ -LiMnO ₃正极材料在C/10下表现出265 mAh g ^-1的高容量。Li ₂ MnO ₃与LiMnO _{2 的结合}相可以稳定结构，从而提高阴极的循环稳定性。在 C/2 下循环 80 次后，正极的容量保持率为 93%。我们的结果有助于开发基于 Li-Mn-O 系统的高性能正极材料的潜在策略。