聚阴离子型二次离子电池正极材料研究进展

闫琦, 兰元其, 姚文娇, 唐永炳

Recent development of polyanionic cathodes for second ion batteries

Qi YAN, Yuanqi LAN, Wenjiao YAO, Yongbing TANG

图2 (a) Na3V2(PO4)2F3晶胞结构示意图[25]；(b) Na3V2(PO4)2F3半电池在0.045 C、0.091 C电流密度下首圈充放电曲线[26]；(c) Na3V2(PO4)2F3的GITT曲线[27]；(d) Na3V2(PO4)2F3-Ti2+0.1半电池在不同电流密度下循环性能曲线[28]

Fig. 2 (a) crystal structure of Na3V2(PO4)2F3 [8]; (b) charge-discharge curve of the first cycle of Na3V2(PO4)2F3 half cell at a current density of 0.045 C and 0.091 C[27]; (c) potential-composition electrochemical curves obtained upon Na+ extraction from Na3V2(PO4)2F3 [13]; (d) rate performance of Na3V2(PO4)2F3-Ti2+0.1 half cell[28]