
Research progress in NaFePO4 cathode material for sodium-ion batteries
Wentao PAN, Xinling YU, Xulai YANG, Qian HUANG
Research progress in NaFePO4 cathode material for sodium-ion batteries
Sodium iron phosphate (NaFePO4, NFP), a cathode material renowned for its stable three-dimensional structure and high theoretical specific capacity of 154 mAh·g-1, stands out as a pivotal component in sodium ion batteries. NFP exists in two distinct crystal structures: triphylite and maricite. The triphylite variety boasts a long lifespan and high reversible capacity, yet its structural thermodynamic instability poses challenges for conventional synthesis methods. Conversely, the maricite structure is stable but exhibits electrochemically inert characteristics due to the absence of cationic transport channels. Both structures suffer from low conductivity and sluggish reaction kinetics, hindering their industrial applications. This paper delves into the characteristics of these two crystal structures and summarizes various synthesis methods, including solid-state, hydrothermal, displacement, and electrospinning, as well as modification techniques such as crystal structure regulation and material surface modification. Additionally, it identifies the key challenges faced by NFP cathodes and presents potential solutions, while also outlining future research directions.
sodium-ion battery / cathode material / sodium iron phosphate / synthesis method / modification measure
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
张福明,王静,张鹏,等.有机电解液在钠离子电池中的研究进展[J].材料工程,2021,49(1):11-22.
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
何仁杰,李书萍,王许敏,等.锂离子电池厚电极结构设计的研究进展[J].材料工程,2022,50(10):38-54.
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
ALI G,
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
|
[34] |
|
[35] |
|
[36] |
|
[37] |
|
[38] |
刘雯雯,周健,文小强,等.喷雾干燥-低温烧结的NaFePO4制备及其电化学性能[J].矿冶工程,2017,37(6):117-120.
|
[39] |
|
[40] |
|
[41] |
|
[42] |
|
[43] |
|
[44] |
|
[45] |
|
[46] |
|
[47] |
|
[48] |
|
[49] |
|
[50] |
|
[51] |
|
[52] |
|
[53] |
|
[54] |
|
[55] |
|
/
〈 |
|
〉 |