Freeze-drying synthesis of metal element (Zr, Cr, Co)-doped Li4Ti5O12 anode material for enhanced electrochemical energy storage in lithium-ion batteries

被引：1
作者：
Ye, Mingcheng [1 ]
Ye, Jiaming [1 ]
Feng, Zuyong [1 ]
He, Miao [1 ,2 ]
机构：
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China
[2] Guangdong Univ Technol, Sch Electromech Engn, State Key Lab Precis Elect Mfg Technol & Equipment, Guangzhou 510006, Peoples R China
来源：
IONICS | 2024年 / 30卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Lithium-ion battery; Li4Ti5O12 anode material; Metal doping; Freeze-drying; SOLID-STATE REACTION; DOPED LI4TI5O12; RATE PERFORMANCE; LI4TI5-XZRXO12; MICROSPHERES; COMPOSITE; TITANATE; DOPANT;
D O I：
10.1007/s11581-024-05546-w
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lithium titanate (Li4Ti5O12, LTO) anode materials doped with Zr, Cr, and Co were prepared by a simple solution freeze-drying (SFD) strategy. Doping with Zr, Cr, and Co metal ions can reduce the charge transfer resistance and enhance the diffusion rate and conductivity of lithium ions. Among the prepared samples, LTO-0.1Zr shows the best electrochemical performance with the reversible capacities of 286.8, 258.5, 235.4, 196.2, 151.5, and 119.6 mAh g(-1) at 0.5, 1, 2, 5, 10, and 20 C, respectively. After 500 cycles at 10 C, a high retention rate of 94.6% for LTO-0.1Zr capacity can still be achieved. As a result, this study provides a simple and effective way to improve the electrochemical performance of LTO as anode material for high rate lithium-ion batteries.
引用
收藏
页码：3767 / 3778
页数：12
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