钾离子电池锰基层状氧化物正极的研究进展

韩文哲, 赖青松, 高宣雯, 骆文彬

Advances toward manganese-based layered oxide cathodes for potassium-ion batteries

Wenzhe HAN, Qingsong LAI, Xuanwen GAO, Wenbin LUO

图5 (a) P3型K_0.5Mn_0.6Co_0.2Fe_0.1Mg_0.1O₂ 电极的XRD谱图；(b) 姜-泰勒效应的可视化结构变化示意图；(c) K_0.5Mn_0.6Co_0.2Fe_0.1Mg_0.1O₂ 在1 A/g下的长循环性能；(d) 沿 b 轴观察P3-K_0.4Fe_0.1Mn_0.8Ti_0.1O₂ 的结构示意图；(e) K_0.35Mn_0.8Fe_0.1Cu_0.1O₂ 的原位XRD图^[66]；(f) K_0.35Mn_0.8Fe_0.1Cu_0.1O₂ 的HRTEM图^[66]；(g) K_0.35Mn_0.8Fe_0.1Cu_0.1O₂ 在K⁺ 嵌入过程中的结构变化示意图^[66]；(h) K_0.35Mn_0.8Fe_0.1Cu_0.1O₂ 在500 mA/g时的循环性能^[66]

Fig. 5 (a) In situ XRD characterization of K_0.5Mn_0.6Co_0.2Fe_0.1Mg_0.1O₂^[61]; (b) Visualization of Jahn-Teller distortion^[61]; (c) Long-term cycling performance of K_0.5Mn_0.6Co_0.2Fe_0.1Mg_0.1O₂at 1 A/g^[61]; (e) In situ XRD patterns of K_0.35Mn_0.8Fe_0.1Cu_0.1O₂^[66]; (f) HRTEM images of K_0.35Mn_0.8Fe_0.1Cu_0.1O₂^[66]; (g) Structural changes in K _x Mn_0.8Fe_0.1Cu_0.1O₂ during K⁺ insertion^[66]; (h) Cycling performance of K_0.35Mn_0.8Fe_0.1Cu_0.1O₂ and KMO at 500 mA/g^[66]