The incorporation of nickel into Li₂CuO₂ is performed using a one-pot method to form particles composed of two phases, both of them containing nickel and copper as determined by XRD and Rietveld refinement. The higher amount of the secondary phase (33 wt%) gives rise to new redox processes at higher voltages and enhances the reversible capacity and stability as LIB cathode. The secondary phase maintains crystallinity and its presence avoids irreversible phase transformations during the first oxidation cycle and allows the attainment of 150 mAh/g at C/15 during the first 50 cycles. In addition, rate capability tests show good capacity retention up to 1C and recover the reversible capacity when returning to C/15. This work opens up new avenues for the incorporation of nickel into copper-based electrodes leading to higher operation voltage and capacity retention.

将镍结合到Li ₂ CuO _2中使用一锅法进行分析以形成由两相组成的颗粒，通过XRD和Rietveld精炼确定，它们均包含镍和铜。较高含量的次级相（33 wt％）在较高电压下产生了新的氧化还原过程，并增强了作为LIB阴极的可逆容量和稳定性。第二相保持结晶度，并且其存在避免了在第一个氧化循环中发生不可逆的相变，并允许在前50个循环中以C / 15达到150 mAh / g。此外，速率能力测试显示了高达1C的良好容量保持能力，并在返回C / 15时恢复了可逆容量。这项工作为将镍结合到铜基电极中开辟了新途径，从而导致更高的工作电压和容量保持率。