Two electrochemical reactions are possible in regard to Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ (0.5Li₂MnO₃−0.5LiNi_0.33Mn_0.33Co_0.33O₂), viz, Li₂MnO₃-like and LiNi_0.33Mn_0.33Co_0.33O₂-like reactions. The open circuit potential (OCP) and changes in crystal structure during the charge-discharge process of Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ were investigated to clarify the mechanism responsible for the two reactions. Li₂MnO₃ and LiNi_0.33Mn_0.33Co_0.33O₂ were separately prepared for the investigation, and the OCPs and crystal structures in these cathodes were measured and then compared with those for Li_1.2Ni_0.13Mn_0.54Co_0.13O₂. The results obtained using X-ray diffraction (XRD) indicated that two phases existed in Li_1.2Ni_0.13Mn_0.54Co_0.13O₂. The changes in crystal structure of the two phases during the charge-discharge process were similar to those in Li₂MnO₃ and LiNi_0.33Mn_0.33Co_0.33O₂. This indicated that two phases, viz, Li₂MnO₃-like and LiNi_0.33Mn_0.33Co_0.33O₂-like, existed in Li_1.2Ni_0.13Mn_0.54Co_0.13O₂. Li₂MnO₃-like, LiNi_0.33Mn_0.33Co_0.33O₂-like, and Li₂MnO₃-like phases were found to contribute mainly to electrochemical reactions in the low, middle, and high state of charge (SOC) ranges during the charge process from the results obtained using XRD and electrochemical measurements carried out on Li_1.2Ni_0.13Mn_0.54Co_0.13O₂. In contrast, the Li₂MnO₃-like and LiNi_0.33Mn_0.33Co_0.33O₂-like phases mainly contributed to electrochemical reactions in the low and high SOC ranges during the discharge process. Furthermore, the high polarization and potential decay during the charge-discharge cycling of Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ were mainly attributed to the Li₂MnO₃-like phase.

关于Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O ₂（0.5Li ₂ MnO ₃ -0.5LiNi _0.33 Mn _0.33 Co _0.33 O ₂），即类似Li ₂ MnO ₃的LiNi _0.33 Mn _0.33 Co的两个电化学反应是可能的_0.33 O ₂样反应。Li _1.2 Ni _0.13 Mn _0.54 Co _0.13的充放电过程中的开路电位（OCP）和晶体结构变化研究了O ₂，以阐明引起这两个反应的机理。分别制备Li ₂ MnO ₃和LiNi _0.33 Mn _0.33 Co _0.33 O ₂，并测量这些阴极中的OCP和晶体结构，然后与Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O _{2进行比较}。X射线衍射（XRD）的结果表明，Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O _2中存在两相。。在充放电过程中，两相的晶体结构的变化与Li ₂ MnO ₃和LiNi _0.33 Mn _0.33 Co _0.33 O ₂中的相似。这表明在Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O _2中存在两相，即Li ₂ MnO ₃类和LiNi _0.33 Mn _0.33 Co _0.33 O ₂类。类似于Li ₂ MnO ₃的LiNi _0.33 Mn _0.33 Co根据XRD和电化学测量获得的结果，发现在充电过程中，低，中和高荷电状态（SOC）范围内的_0.33 O ₂类相和Li ₂ MnO ₃类相主要起电化学反应的作用在Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O _2上进行。相反，类Li ₂ MnO ₃和LiNi _0.33 Mn _0.33 Co _0.33 O ₂类相主要在放电过程中在低和高SOC范围内导致电化学反应。此外，Li _1.2 Ni _0.13 Mn _0.54 Co _0.13 O ₂的充放电循环中的高极化和电位衰减主要归因于Li ₂ MnO ₃类相。