Pure LiMPO₄ (M = Fe, Co and Ni) cathode materials have been synthesized with an ordered olivine structure using a concurrent solvothermal process involving low-level and long-time microwave applications using ethylene glycol as a reaction medium. The influences of this unusual microwave approach have been investigated in detail in terms of the structural and electrochemical properties of the materials produced, and the findings have been compared with those obtained by conventional methods. The Rietveld refinement reveals that all powder products have the same orthorhombic olivine structure in the Pnma space group, that lithium ions are predominantly occupied at the octahedral M1 [1 0 0] site, and that the Fe, Co and Ni transition metal-ions reside at the octahedral M2 [0 1 0] site. It has also been found that anti-site disorders remain somewhat limited, albeit slightly higher in the case of the Li–Ni couple. LiFePO₄ exhibits good long-term electrochemical properties. LiCoPO₄ and LiNiPO₄ cathodes exhibit qualitative cyclic stability performances in their own categories. At the end of 500 cycles, LiFePO₄ retained 97.6% of the initial capacity value, while LiCoPO₄ was able to maintain only 52.8% at the end of the 50th cycle. In particular, this extraordinary microwave technique mediates stable and low-defect crystal formation, which has a remarkable effect on the electrochemical stability characteristics of the material. Thus, this work provides a positive contribution for advanced energy storage applications.

 使用并发溶剂热工艺（包括使用乙二醇作为反应介质的低水平和长时间微波应用）并发溶剂热工艺，合成了具有有序橄榄石结构的纯Li M PO ₄（M = Fe，Co和Ni）阴极材料。已就所生产材料的结构和电化学性质对这种异常微波方法的影响进行了详细研究，并将其发现与通过常规方法获得的结果进行了比较。Rietveld的改进表明，所有粉末产品在Pnma中都具有相同的斜方晶石橄榄石结构空间群，锂离子主要占据八面体M1 [1 0 0]的位置，而Fe，Co和Ni过渡金属离子位于八面体M2 [0 1 0]的位置。还发现抗位障碍仍然有限，尽管在Li-Ni对夫妇中稍高一些。LiFePO ₄表现出良好的长期电化学性能。LiCoPO ₄和LiNiPO ₄阴极在其自己的类别中显示出定性的循环稳定性能。在500个循环结束时，LiFePO ₄保留了初始容量值的97.6％，而LiCoPO ₄在第50个周期结束时只能维持52.8％。特别是，这种非凡的微波技术可介导稳定且低缺陷的晶体形成，这对材料的电化学稳定性能具有显着影响。因此，这项工作为先进的储能应用提供了积极的贡献。