聚阴离子型钠离子电池正极材料的研究进展

潘雯丽,关文浩,姜银珠

Research Advances in Polyanion-Type Cathodes for Sodium-Ion Batteries

Wenli Pan,Wenhao Guan,Yinzhu Jiang

表2 不同聚阴离子钠电正极材料的倍率性能

Table 2 Rate performance of polyanion cathodes for sodium ion batteries.

Chemical formula Theoretical Capacity/(mAh?g?1) Materials and ways to improve rate performance Electrochemical data Ref. Maricite-NaFePO4 150 Nano-NaFePO4 (50 nm)/C 142 mAh?g?1 at C/20 and 60 mAh?g?1 at 2C 20 Nano-NaFePO4 (40–140 nm)/C/graphene 142 mAh?g?1 at C/20 and 51 mAh?g?1 at 5C 62 Nano-NaFePO4 (1.6 nm) @ porous N-doped carbon nanofibers 145 mAh?g?1 at 0.2C and 61 mAh?g?1 at 50C 53 Oviline-NaFePO4 150 Bare NaFePO4 125 mAh?g?1 at 7.5 mA?g?1 17 Polythiophene-Wrapped NaFePO4 141 mAh?g?1 at 10 mA?g?1 and 42 mAh?g?1 at 300 mA?g?1 64 Na2FeP2O7 97 Na2FeP2O7 (300-500 nm)/C 82 mAh?g?1 at C/20 and 50 mAh?g?1 at 10C 65 Na2FeP2O7/MWCNT 86 mAh?g?1 at 1C and 68 mAh?g?1 at 10C 57 Na3V2(PO4)3 118 Na3V2(PO4)3/C 93 mAh?g?1 at C/20 and 29 mAh?g?1 at 1C 66 Na3V2(PO4)3 (20-40 nm) @ Porous Carbon Matrix 102 mAh?g?1 at 20C and 44 mAh?g?1 at 200C 28 Na3V2(PO4)3 (50-200 nm) @C@rGO 115 mAh?g?1 at 20C and 86 mAh?g?1 at 100C 67 Na3V2(PO4)2F3 128 Core/double-shell structured Na3V2(PO4)2F3@C 120 mAh?g?1 at 1C and 63 mAh?g?1 at 100C 68 Na3(VO)2(PO4)2F 130 Na3(VO)2(PO4)2F /C 102 mAh?g?1 at 20C and 68 mAh?g?1 at 1C 69 Graphene quantum dots-shielded Na3(VO)2(PO4)2F @C nanocuboids 102 mAh?g?1 at 20C and 70 mAh?g?1 at 45C 60 Na2Fe(SO4)2· 2H2O 82 Bare- Na2Fe(SO4)2·2H2O 70 mAh?g?1 at C/20 42 Na2Fe(SO4)2·2H2O@ zero-, one and two-dimensional carbon matrix (activated carbon, single wall carbon nanotubes and graphene) 60 mAh?g?1 at 5C 44 Na2+2xFe2-x(SO4)3 (x = 0–0.4) 120 Bare Na2+2xFe2?x(SO4)3 102 mAh?g?1 at C/20 and 58 mAh?g?1 at 20C 49 Na2+2xFe2?x(SO4)3/SWNT 60 mAh?g?1 at 40C 51 Na2FeSiO4 276 Na2FeSiO4 (30–50 nm)/C 106 mAh?g?1 at 10 mA?g?1 and 40 mAh?g?1 at 200 mA?g?1 34 Na2FeSiO4 (20–50 nm)/C 106 mAh?g?1 at 27.6 mA g?1 (0.1C) and 100 mAh?g?1 at 276 mA?g?1 (1C) 35 mesoporous Na2FeSiO4 nanospheres @ carbon nanotubes 173 mAh?g?1 at 0.1C and 109 mAh?g?1 at 20C 70 Na2MnSiO4 280 Na2MnSiO4 with 5% (volume percent) VC electrolyte additive 210 mAh?g?1 at 0.1C and 100 mAh?g?1 at 5C 37 three-dimensionally ordered macroporous Na2MnSiO4/C 207 mAh?g?1 at 0.1C and 76 mAh?g?1 at 5C 38