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6 (a) Li2FeSiO4晶胞结构示意图[58]；(b) Li2FeSiO4半电池在C/16下的充放电曲线[60]；(c) Li2FeSiO4/C半电池在C/50下的充放电曲线[61]；(d) LiFeBO3晶胞结构示意图[62]；(e) LiFeBO3半电池充放电曲线[63]；(f) LiFeBO3和碳包覆LiFeBO3(C-LiFeBO3)半电池在不同电流密度下的循环性能曲线[(1)5、(2)、(3)20和(4)50 mA/g][63]

Fig. 6 (a) crystal structure of Li2FeSiO4[58]; (b) variation of potential with state of charge on cycling Li2FeSiO4 at a rate of C/16[60]; (c) charge and discharge voltage profiles of Li2FeSiO4/C at a current density corresponding to C/50 rate[61]; (d) crystal structure of LiFeBO3[62]; (e) typical charge and discharge curves of LiFeBO3 cell[63]; (f) the cycle stability of the LiFeBO3 and C-LiFeBO3 at different current densities[(1)5, (2)10, (3) 20 and (4) 50 mA/g][63]