A bimetallic oxalate precursor with gradient distribution of elemental concentration followed with an efficient process is applied to synthesize LiFe_0.5Mn_0.5PO₄ nanocomposite. The concentration gradient composition realizes a rational distribution of transition metal elements inside the material particles, reduces the dissolution of Mn³⁺ and improves the cycle stability of materials.

中文翻译：

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共沉淀反应制备浓度梯度结构LiFe0.5Mn0.5PO4/C用于先进锂离子电池

采用元素浓度梯度分布的双金属草酸盐前驱体，采用高效工艺合成LiFe _0.5 Mn _0.5 PO ₄纳米复合材料。该浓度梯度组成实现了过渡金属元素在材料颗粒内部的合理分布，减少了Mn ³⁺的溶解，提高了材料的循环稳定性。