Quasi-single crystalline Na4Fe3(PO4)2P2O7 cathode

Significantly enhanced sodium-ion kinetics

The quasi-single crystalline structure suppresses nearly 50% of internal strain, reducing stress accumulation during cycling and enhancing crystal structure stability.

Xi, Yukun · Wang, Mingjun · Guangjin, Wang · Junqi, Peng · Hou, Ningjing · Yang, Zihao · Wang, Xiaoxue · Dongzhu, Liu · Pu, Xiaohua · Cao, Guiqiang · Duan, Ruixian · Qinting, Jiang · Li, Wenbin · Wang, Jingjing · Li, Xifei

Chemical Engineering Journal 2024

Specifications

比容量
{'zh': '107.9', 'en': ''} mAh g⁻¹
比容量
{'zh': '88.5', 'en': ''} mAh g⁻¹

Advantages

88.1% capacity retention after 1000 cycles at 1C

electronic conductivity improved from 6.0 to 32.4 μS/cm