钠离子电池层状氧化物正极：层间滑移，相变与性能

刘欢庆, 高旭, 陈军, 尹首懿, 邹康宇, 徐来强, 邹国强, 侯红帅, 纪效波

Layered oxide cathode for sodium ion batteries: Interlayer glide, phase transition and performance

Huanqing LIU, Xu GAO, Jun CHEN, Shouyi YIN, Kangyu ZOU, Laiqiang XU, Guoqiang ZOU, Hongshuai HOU, Xiaobo JI

图3 (a)～(d) NaCrO₂、NaNiO₂、O3-NaNi_0.5Mn_0.5O₂ and O3-Na_xMn_1/3Fe_2/3O₂的相演化^{[37, 43, 48]}；(e) 在2.0～4.3 V范围内O3-Na_1-_δNi_1/3Fe_1/3Mn_1/3O₂电极的原位XRD图^[51]；(f) NaFe_0.2Mn_0.4Ni_0.4O₂电极的非原位XRD图^[45]

Fig.3 (a)～(d) phase evolutions of NaCrO₂, NaNiO₂, O3-NaNi_0.5Mn_0.5O₂ and O3-Na_xMn_1/3Fe_2/3O₂^{[37, 43, 48]}; (e) in-situ XRD patterns collected during cycling of O3-Na_1-_δNi_1/3Fe_1/3Mn_1/3O₂ electrode between 2.0 and 4.3 V^[51]; (f) ex-situ XRD pattern of NaFe_0.2Mn_0.4Ni_0.4O₂electrode^[45]