Mn-rich olivine LiFe_0.3Mn_0.7PO₄ is homogenously encapsulated by an ∼3-nm-thick conductive nanolayer composed of the glassy lithium fluorophosphate through simple non-stoichiometric synthesis using additives of small amounts of LiF and a phosphorus source. The coating of the glassy lithium fluorophosphate nanolayer is clearly verified using transmission electron microscopy and X-ray photoelectron spectroscopy. It enables significant decrease in charge transfer resistance of LiFe_0.3Mn_0.7PO₄ and improvement of its sluggish Li diffusion. At a rate of 10C, the LiFe_0.3Mn_0.7PO₄ encapsulated by conductive glassy lithium fluorophosphate (LiFe_0.3Mn_0.7PO₄-GLFP) electrode delivers a capacity of ∼130 mAh g⁻¹, which is ∼77% of its theoretical capacity (∼170 mAh g⁻¹) and ∼1.5 times higher than that of the pristine counterpart at 10C. Furthermore, LiFe_0.3Mn_0.7PO₄-GLFP achieves outstanding cycle stability (∼75% retention of its initial capacity over 500 cycles at 1C). The proposed olivine LiFe_0.3Mn_0.7PO₄-GLFP battery is thus expected to be a promising candidate for large-scale energy storage applications.

富锰橄榄石LiFe _0.3 Mn _0.7 PO ₄通过使用少量LiF和磷源的简单非化学计量合成，由玻璃状氟磷酸锂组成的厚度约为3nm的导电纳米层均匀包裹。使用透射电子显微镜和X射线光电子能谱清楚地验证了玻璃状氟磷酸锂纳米层的涂层。它可以显着降低LiFe _0.3 Mn _0.7 PO _4的电荷转移电阻，并改善其缓慢的Li扩散。在10C的速率下，LiFe _0.3 Mn _0.7 PO ₄用导电玻璃态氟代磷酸锂（LiFe _0.3 Mn _0.7 PO ₄ -GLFP）电极封装的容量约为130 mAh g ^-1，是其理论容量（约170 mAh g ^-1）的约77％，约为其1.5倍比原始温度在10摄氏度时要高。此外，LiFe _0.3 Mn _0.7 PO ₄ -GLFP实现了出色的循环稳定性（在1C的500个循环中，其初始容量保留了约75％）。因此，所提出的橄榄石型LiFe _0.3 Mn _0.7 PO ₄ -GLFP电池有望成为大规模储能应用的有前途的候选者。