首页|Development of lithium-free P2-type high-sodium content cathode materials with enhanced cycle and air stability for sodium-ion batteries

Development of lithium-free P2-type high-sodium content cathode materials with enhanced cycle and air stability for sodium-ion batteries

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The effect of partial substitution of Mg for Ni on a high-sodium and lithium-free layered P2-type Na45/54Mg6/54Ni12/54Mn34/54O2 cathode with high initial Coulombic efficiency and excellent cyclic stability has been investigated in this study.Based on the crystal structural analysis,the Mg doping can retain the P2 structure up to 4.3 V,thus restraining the detrimental phase transformation of P2-O2 during the Na-ion intercalation/deintercalation process.Therefore,the obtained Mg-doped P2-type cathode exhibits a reversible specific capacity of 109 mAh·g-1 at 0.1C between 2.0 and 4.3 V and a retention rate of 81.5％after 200 cycles at 1C.In addition,the full cell consisting of Mg-doped P2-type cathode and hard carbon anode shows a capacity retention rate of 85.6％after 100 cycles.This study provides new insight into the development of durable cathode mate-rials for sodium-ion batteries.

Sodium-ion batteriesCathode materialHigh sodium contentAir stability

Jin-Lv Tian、Lin-Rong Wu、Hai-Jun Zhao、Shou-Dong Xu、Liang Chen、Ding Zhang、Xiao-Chuan Duan

展开 >

College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China

College of Chemistry,Taiyuan University of Technology,Taiyuan 030024,China

School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China

National Natural Science Foundation of ChinaNatural Science Foundation of Shanxi ProvinceNatural Science Foundation of Shanxi ProvinceNatural Science Foundation of Shanxi Province

21978193202103021231072018110200520181102019

2024

10.1007/s12598-023-02422-w

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(1)
  • 66