钠离子电池正极材料氟磷酸钒钠研究进展

孙畅, 邓泽荣, 江宁波, 张露露, FANG Hui, 杨学林

Recent research progress of sodium vanadium fluorophosphate as cathode material for sodium-ion batteries

Chang SUN, Zerong DENG, Ningbo JIANG, Lulu ZHANG, Hui FANG, Xuelin YANG

图1 (a) NVPF的晶体结构[33]；(b) NVPF的非原位 23Na核磁共振波谱[34]；(c) 基于Rietveld精修获得的NVPF不同脱钠相的钠分布情况[35]；(d) 基于碳热还原法在不同温度下合成NVPF的充放电曲线[39]

Fig. 1 (a) Crystal structure of NVPF[33]; (b) ex-situ23Na NMR spectra of NVPF[34]; (c) sodium distribution for different sodium removal phases of NVPF based on Rietveld refinement[35]; (d) charge-discharge curves for NVPF synthesized by carbothermal reduction at different temperatures[39]