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
表1 聚阴离子型二次电池正极材料相关工作总结
Table 1 Summary of the representative polyanionic cathodes for rechargeable batteries
聚阴离子材料类型物质结构电化学性质
单一磷酸盐

LiFePO4[13]

NaV2(PO4)3[78]

KFePO4[79]

正交晶系(Pnma)

三斜晶系(R/3c)

单斜晶系(P21/c)

3.5 V(vs. Li+/Li), 144.9 mA·h/g(QTH = 170 mA·h/g)

3.4 V(vs. Na+/Na), 116 mA·h/g(QTH = 117.6 mA·h/g)

2.5 V(vs. K+/K), 90 mA·h/g(QTH = 143 mA·h/g)

含氟磷酸盐

LiVPO4F[80]

NaVPO4F[30]

KVPO4F[54]

三斜晶系(P1ˉ)

四方晶系(I4/mmm)

斜方晶系(Pna21)

4.2 V(vs. Li+/Li), 139 mA·h/g(QTH = 156 mA·h/g)

3.9 V(vs. Na+/Na), 135 mA·h/g(QTH = 143 mA·h/g)

4.3 V(vs. K+/K), 105 mA·h/g(QTH = 131 mA·h/g)

其他磷酸盐

Li2FeP2O7[81]

Na4Fe3(PO4)2P2O7[33]

KVP2O7[82]

单斜晶系(P21/c)

斜方晶系(Pn21a)

单斜晶系(P21/c)

3.3 V(vs. Li+/Li), 103.1 mA·h/g(QTH = 110 mA·h/g)

3.2 V(vs. Na+/Na), 129 mA·h/g(QTH = 129 mA·h/g)

4.2 V(vs. K+/K), 60 mA·h/g(QTH = 101 mA·h/g)

单一硫酸盐

Li2Fe(SO4)2[83]

Na6Fe5(SO4)8[84]

正交晶系(Pbca)

单斜晶系(C2/c)

3.83 V(vs. Li+/Li), 88 mA·h/g(QTH = 102 mA·h/g)

3.6 V(vs. Na+/Na), 110.2 mA·h/g(QTH = 120 mA·h/g)

含氟硫酸盐

LiFeSO4F[50]

NaFeSO4F[85]

KFeSO4F[53]

单斜晶系(P1ˉ)

单斜晶系(C2/c)

正交晶系(Pna21)

3.6 V(vs. Li+/Li), 140 mA·h/g(QTH = 151 mA·h/g)

3.7 V(vs. Na+/Na), 105 mA·h/g(QTH = 138 mA·h/g)

2.3 V(vs. K+/K), 135 mA·h/g(QTH = 160 mA·h/g)

其他硫酸盐

KFe3(SO4)2(OH)6[57]

Na2Fe(SO4)2·2H2O[86]

K2Fe3(SO4)3(OH)2(H2O)2[87]

三方晶系(R3m)

单斜晶系(P21/c)

正交晶系(Cmc21)

3.5 V(vs. Li+/Li), 144.9 mA·h/g(QTH = 170 mA·h/g)

3.25 V(vs. Na+/Na), 70 mA·h/g(QTH = 118 mA·h/g)

2.8 V(vs. K+/K), ～90 mA·h/g(QTH = 89.3 mA·h/g)

其他单一聚阴离子

Li2FeSiO4[63]

Na2Fe2(C2O4)3·2H2O[65]

KFeC2O4F[71]

正交晶系(Pmn21)

单斜晶系(P21/c)

正交晶系(Cmc21)

2.0 V(vs. Li+/Li), 130 mA·h/g(QTH = 320 mA·h/g)

3.3 V(vs. Na+/Na), 116 mA·h/g(QTH = 117 mA·h/g)

3.8 V(vs. K+/K), 112 mA·h/g(QTH = 220 mA·h/g)

混合聚阴离子

Na2Fe(C2O4)(HPO4)[88]

Na2Fe(C2O4)(SO4)·H2O[76]

K4Fe3(C2O4)3(SO4)2[77]

单斜晶系(P21/c)

六方晶系(P6ˉ2m)

单斜晶系(P21/c)

3.2 V(vs. Li+/Li), 71 mA·h/g(QTH = 320 mA·h/g)

3.2 V(vs. Na+/Na), 170 mA·h/g(QTH = 176 mA·h/g)

3.2 V(vs. K+/K), 85 mA·h/g(QTH =133 mA·h/g)