In the archetypal lithium-rich cathode compound Li_1.2Ni_0.13Co_0.13Mn_0.54O₂, a major part of the capacity is contributed from the anionic (O^2−/−) reversible redox couple and is accompanied by the transition metal ions migration with a detrimental voltage fade. A better understanding of these mutual interactions demands for a new model that helps to unfold the occurrences of voltage fade in lithium-rich system. Here we present an alternative approach, a cationic reaction dominated lithium-rich material Li_1.083Ni_0.333Co_0.083Mn_0.5O₂, with reduced lithium content to modify the initial band structure, hence ~80% and ~20% of capacity are contributed by cationic and anionic redox couples, individually. A 400 cycle test with 85% capacity retention depicts the capacity loss mainly arises from the metal ions dissolution. The voltage fade usually from Mn⁴⁺/Mn³⁺ and/or Oⁿ⁻/O²⁻ reduction at around 2.5/3.0 V seen in the typical lithium-rich materials is completely eliminated in the cationic dominated cathode material.

在原型富锂阴极化合物Li _1.2 Ni _0.13 Co _0.13 Mn _0.54 O _2中，大部分容量是由阴离子（O ^2-/-）可逆氧化还原对贡献的，并且伴随着过渡金属离子的迁移。有害的电压衰减。对这些相互影响的更好理解需要一个新模型，该模型有助于揭示富锂系统中电压衰减的发生。在这里，我们提出了一种替代方法，即以阳离子反应为主的富锂材料Li _1.083 Ni _0.333 Co _0.083 Mn _0.5 O ₂降低锂含量以修饰初始能带结构，因此分别由阳离子和阴离子氧化还原对贡献约80％和〜20％的容量。容量保持率为85％的400循环测试表明容量损失主要来自金属离子溶解。通常在典型的富锂材料中看到的大约2.5 / 3.0 V时，Mn ⁴⁺ / Mn ³⁺和/或O ^n- / O ^2-还原所引起的电压衰减在阳离子为主的阴极材料中被完全消除。