Nitrogen-doped Li₂MnSiO₄/C (LMS/CN) was synthesized by an acetic acid-assisted sol-gel route. To improve the cycling stability of the LMS/CN cathodes, five formation cycles were employed, by charging cells to 4.5 V and 4.6 V vs. Li⁺/Li prior to operation cycles, where the cells were charged to a higher potential of 4.8 V. The LMS/CN cells charged to 4.5 V and 4.6 V had 30-cycle capacity retention values of 72.5 and 74.5%, respectively, compared to 60.3% for cells that had not undergone reduced-potential formation cycles. The formation cycles improved the structure and stability of the cathode electrolyte interphase (CEI). Reduced charge transfer and Li⁺ migration resistance and improved retention of octahedral MnO coordination were shown by ex situ XANES, XPS and electrochemical impedance spectroscopy.

通过乙酸辅助的溶胶-凝胶路线合成了氮掺杂的Li ₂ MnSiO ₄ /C (LMS/CN)。为了提高 LMS/CN 正极的循环稳定性，采用了五个形成循环，通过在操作循环之前将电池充电至 4.5 V 和 4.6 V对比Li ⁺ /Li，其中电池充电至更高的电位 4.8 V . 充电至 4.5 V 和 4.6 V 的 LMS/CN 电池的 30 次循环容量保持值分别为 72.5% 和 74.5%，而未经历降低电位形成循环的电池则为 60.3%。形成循环改善了阴极电解质中间相（CEI）的结构和稳定性。减少电荷转移和Li ⁺迁移性和改善的八面体的Mn保留ö协调由所示易地XANES，XPS和电化学阻抗谱。