The electrochemical performances of cathode materials depend on crystallinity and structural stability. We report improved electrochemical performances of Li₂FeMn₃O₈ (LFMO) cathode materials synthesized using the chemical solution combustion method and the obtained powders are calcined at various temperatures such as 600 °C, 700 °C, and 900 °C. The LLCZN/PEO/LiPF₆ is used as a solid electrolyte during the assembly of the coin cells. The calcining temperatures improve the crystallinity and structural stability, thereby improving the electrochemical performances of the LFMO because of the mutual diffusion region at the electrode/solid electrolyte interface. Among these, the LFMO calcined at 900 °C shows the best electrochemical performance. At 0.1 mA cm⁻², the discharge capacity at the 150th cycle is 133 mAh g⁻¹ with a Coulombic efficiency of approximately 97% and a retention rate of 85% for the 900 °C calcined sample. While the 700 °C calcined sample is 126 mAh g⁻¹ after 150th cycles of the galvanostatic charge-discharge test, the Coulombic efficiency is maintained at about 95% and the capacity retention rate is 83%. The 600 °C calcined temperature exhibited 101 mAh g⁻¹ with a Coulombic efficiency of 92% and a retention rate of 73% after the 150th discharge cycle. The findings suggest that the chemical solution combustion approach might be a viable way of producing nanosized LFMO as an active cathode material for lithium-ion batteries (LIB).

正极材料的电化学性能取决于结晶度和结构稳定性。_{我们报道了使用化学溶液燃烧法合成的 Li 2} FeMn ₃ O ₈ (LFMO) 正极材料的电化学性能得到改善，并将得到的粉末在 600°C、700°C 和 900°C 等不同温度下煅烧。LLCZN/PEO/LiPF ₆在纽扣电池组装过程中用作固体电解质。煅烧温度提高了结晶度和结构稳定性，从而改善了LFMO的电化学性能，因为电极/固体电解质界面处的相互扩散区​​域。其中，900℃煅烧的LFMO表现出最好的电化学性能。在 0.1 mA cm ^-2下，第 150 次循环的放电容量为 133 mAh g ^-1，900 °C 煅烧样品的库仑效率约为 97%，保留率为 85%。而 700 °C 煅烧样品为 126 mAh g ^-1恒电流充放电测试150次循环后，库仑效率保持在95%左右，容量保持率为83%。600 ℃的煅烧温度显示出 101 mAh g ^-1的库仑效率为 92%，在第 150 次放电循环后保持率为 73%。研究结果表明，化学溶液燃烧方法可能是生产纳米级 LFMO 作为锂离子电池 (LIB) 的活性阴极材料的可行方法。